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2020-06-06build: Add -Wshadow-fieldMarcoFalke
2020-06-05build: turn on --enable-c++17 by --enable-fuzzVasil Dimov
Fuzzing code uses C++17 specific code (e.g. std::optional), so it is not possible to compile with --enable-fuzz and without --enable-c++17. Thus, turn on --enable-c++17 whenever --enable-fuzz is used.
2020-06-04Merge #19131: refactor: Fix unreachable code in init arg checksWladimir J. van der Laan
eea81146571480b2acd12c8cd7f36b04d056c47f build: Enable unreachable-code-loop-increment (Jonathan Schoeller) d15db4b1fc988736b08c092d000ca1d1ff686975 refactor: Fix unreachable code in init arg checks (Jonathan Schoeller) Pull request description: Closes: #19017 In #19015 it's been suggested that we add some new compiler warnings to our build. Some of these, such as `-Wunreachable-code-loop-increment`, generate warnings. We'll likely want to fix these up if we're going to turn these warnings on. ```shell init.cpp:969:5: warning: loop will run at most once (loop increment never executed) [-Wunreachable-code-loop-increment] for (const auto& arg : gArgs.GetUnsuitableSectionOnlyArgs()) { ^~~ 1 warning generated. ``` https://github.com/bitcoin/bitcoin/blob/aa8d76806c74a51ec66e5004394fe9ea8ff0fac4/src/init.cpp#L968-L972 To fix this, collect all errors, and output them in a single error message after the loop completes. This resolves the unreachable code warning, and avoids popup hell that could result from outputting a seperate message for each error or warning one by one. ACKs for top commit: laanwj: Code review ACK eea81146571480b2acd12c8cd7f36b04d056c47f hebasto: re-ACK eea81146571480b2acd12c8cd7f36b04d056c47f, only suggested changes applied since the [previous](https://github.com/bitcoin/bitcoin/pull/19131#pullrequestreview-421772387) review. Tree-SHA512: 2aa3ceb7fab581b6ba2580900668388d8eba1c3001c8ff9c11c1f4a9a10fbc37f30e590249862676858446e3f4950140a252953ba1643ba3bfd772f8eae20583
2020-06-03build: improved output of configure for build OSsachinkm77
2020-06-02build: Enable unreachable-code-loop-incrementJonathan Schoeller
Enable unreachable-code-loop-increment and treat as error. refs: #19015
2020-06-01Merge #19072: doc: Expand section on Getting Startedfanquake
facef3d4131f9980a4516282f11731361559509c doc: Explain that anyone can work on good first issues, move text to CONTRIBUTING.md (MarcoFalke) fae2fb2a196ee864e9a13fffc24a0279cd5d17e6 doc: Expand section on Getting Started (MarcoFalke) 100000d1b2c2e38d7a14a31b0af79e0e4316b04c doc: Add headings to CONTRIBUTING.md (MarcoFalke) fab893e0caf510d4836a20194892ef9c71426c51 doc: Fix unrelated typos reported by codespell (MarcoFalke) Pull request description: Some random doc changes: * Add sections to docs, so that they can be linked to * Explain that anyone (even maintainers) are allowed to work on good first issues * Expand section on Getting Started slightly ACKs for top commit: hebasto: ACK facef3d4131f9980a4516282f11731361559509c fanquake: ACK facef3d4131f9980a4516282f11731361559509c Tree-SHA512: 8998e273a76dbf4ca77e79374c14efe4dfcc5c6df6b7d801e1e1e436711dbe6f76b436f9cbc6cacb45a56827babdd6396f3bd376a9426ee7be3bb9b8a3b8e383
2020-05-28build: Only allow ASCII identifiersWladimir J. van der Laan
While emoji and other symbols in C++ identifers (as accepted by newer compilers) are fun, they might create confusion during code review, for example because some symbols look very similar. Forbid such extended identifiers for now. This is done by providing `-fno-extended-identifiers`. Thanks to sipa for suggesting this compiler flag.
2020-05-28build: Replace -Wthread-safety-analysis with broader -Wthread-safetyHennadii Stepanov
2020-05-27doc: Fix unrelated typos reported by codespellMarcoFalke
2020-05-21Merge #18677: Multiprocess build supportfanquake
e2bab2aa162ae38b2bf8195b577c982402fbee9d multiprocess: add multiprocess travis configuration (Russell Yanofsky) 603fd6a2e708c04ef6c9880f89d0a4cbaa6fc7c5 depends: add MULTIPROCESS depends option (Russell Yanofsky) 5d1377b52bfcd4edf8553aaf332bfeb92fc554cc build: multiprocess autotools changes (Russell Yanofsky) Pull request description: This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10). --- This PR consists of build changes only. It adds an `--enable-multiprocess` autoconf option (off by default and marked experimental), that builds new `bitcoin-node` and `bitcoin-gui` binaries. These currently function the same as existing `bitcoind` and `bitcoin-qt` binaries, but are extended in #10102 with IPC features to execute node, wallet, and gui functions in separate processes. In addition to adding the `--enable-multiprocess` config flag, it also adds a depends package and autoconf rules to build with the [libmultiprocess](https://github.com/chaincodelabs/libmultiprocess) library, and it adds new travis configuration to exercise the build code and run functional tests with the new binaries. The changes in this PR were originally part of #10102 but were moved into #16367 to be able to develop and review the multiprocess build changes independently of the code changes. #16367 was briefly merged and then reverted in #18588. Only change since #16367 has been dropping the `native_boost.mk` depends package which was pointed out to be no longer necessary in https://github.com/bitcoin/bitcoin/pull/16367#issuecomment-596484337 and https://github.com/bitcoin/bitcoin/pull/18588#pullrequestreview-391765649 ACKs for top commit: practicalswift: ACK e2bab2aa162ae38b2bf8195b577c982402fbee9d Sjors: tACK e2bab2aa162ae38b2bf8195b577c982402fbee9d on macOS 10.15.4 hebasto: ACK e2bab2aa162ae38b2bf8195b577c982402fbee9d, tested on Linux Mint 19.3 (x86_64): Tree-SHA512: b5a76eab5abf63d9d8b6d628cbdff4cc1888eef15cafa0a5d56369e2f9d02595fed623f4b74b2cf2830c42c05a774f0943e700f9c768a82d9d348cad199e135c
2020-05-14build: enforce minimum required Windows version (7)fanquake
Instruct the linker to set the major & minor subsystem versions in the PE header to 6 & 1 (NT 6.1 which corresponds to Windows 7). Similar to macOS, the binary will now refuse to run on unsupported versions of Windows.
2020-05-13Merge #18887: build: enable -Werror=gnuWladimir J. van der Laan
a30b0a24e97eae7f6d1428c5bf339a579872f28e build: enable -Werror=gnu (Vasil Dimov) Pull request description: Stop the build if a warning is emitted due to `-Wgnu` and `--enable-werror` has been used. As usual - this would help notice such a warning that is about to be introduced in new code. This is a followup to https://github.com/bitcoin/bitcoin/pull/18088 build: ensure we aren't using GNU extensions ACKs for top commit: practicalswift: ACK a30b0a24e97eae7f6d1428c5bf339a579872f28e Empact: ACK https://github.com/bitcoin/bitcoin/pull/18887/commits/a30b0a24e97eae7f6d1428c5bf339a579872f28e Tree-SHA512: f81b71cf3ee4db88b6f664c571075e0d30800a604f067f44273f256695a1dea533779db2ac859dd0a4cd8b66289c3e45f4aff1cfadfa160a1c354237167b05e2
2020-05-13Merge #18862: Remove fdelt_chk back-compat code and sanity checkWladimir J. van der Laan
df6bde031b24112abf3a94337a2c096698acde6e test: remove glibc fdelt sanity check (fanquake) 8bf1540cc235fb8fb5330a7ae8ab638247ceb177 build: remove fdelt_chk backwards compatibility code (fanquake) Pull request description: https://github.com/bitcoin/bitcoin/commit/ae30d40e50e9d63d875d29d54d22147b09fc420c The return type of [`fdelt_chk`](https://sourceware.org/git/?p=glibc.git;a=blob;f=debug/fdelt_chk.c;h=f62ce7349707cb68f55831c1c591fd7387a90258;hb=HEAD) changed from `unsigned long int` to `long int` in glibc 2.16. See [this commit](https://sourceware.org/git/?p=glibc.git;a=commit;h=ceb9e56b3d1f8c1922e0526c2e841373843460e2). Now that we require [glibc >=2.17](https://github.com/bitcoin/bitcoin/pull/17538) we can remove our back-compat code. https://github.com/bitcoin/bitcoin/commit/ab7bce584ae02bf25e2e91aa54f9b0249427127d While looking at the above changes, I noticed that our glibc fdelt sanity check doesn't seem to be checking anything. `fdelt_warn()` also isn't something we'd want to actually "trigger" at runtime, as doing so would cause `bitcoind` to abort. The comments: > // trigger: Call FD_SET to trigger __fdelt_chk. FORTIFY_SOURCE must be defined > // as >0 and optimizations must be set to at least -O2. suggest calling FD_SET to check the invocation of `fdelt_chk` (this is [aliased with fdelt_warn in glibc](https://sourceware.org/git/?p=glibc.git;a=blob;f=debug/fdelt_chk.c;h=f62ce7349707cb68f55831c1c591fd7387a90258;hb=HEAD)). However just calling `FD_SET()` will not necessarily cause the compiler to insert a call to `fd_warn()`. Whether or not GCC (recent Clang should work, but may use different heuristics) inserts a call to `fdelt_warn()` depends on if the compiler can determine if the value passed in is a compile time constant (using [`__builtin_constant_p`](https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html)) and whether the value is < 0 or >= `FD_SETSIZE`. The glibc implementation is [here](https://sourceware.org/git/?p=glibc.git;a=blob;f=misc/bits/select2.h;h=7e17430ed94dd1679af10afa3d74795f9c97c0e8;hb=HEAD). This means our check should never cause a call to be inserted. Compiling master without `--glibc-back-compat` (if you do pass `--glibc-back-compat` the outcome is still the same; however the abort will only happen with >=`FD_SETSIZE` as that is what our [fdelt_warn()](https://github.com/bitcoin/bitcoin/blob/master/src/compat/glibc_compat.cpp#L24) checks for), there are no calls to `fdelt_warn()` inserted by the compiler: ```bash objdump -dC bitcoind | grep sanity_fdelt ... 0000000000399d20 <sanity_test_fdelt()>: 399d20: 48 81 ec 98 00 00 00 sub $0x98,%rsp 399d27: b9 10 00 00 00 mov $0x10,%ecx 399d2c: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax 399d33: 00 00 399d35: 48 89 84 24 88 00 00 mov %rax,0x88(%rsp) 399d3c: 00 399d3d: 31 c0 xor %eax,%eax 399d3f: 48 89 e7 mov %rsp,%rdi 399d42: fc cld 399d43: f3 48 ab rep stos %rax,%es:(%rdi) 399d46: 48 8b 84 24 88 00 00 mov 0x88(%rsp),%rax 399d4d: 00 399d4e: 64 48 33 04 25 28 00 xor %fs:0x28,%rax 399d55: 00 00 399d57: 75 0d jne 399d66 <sanity_test_fdelt()+0x46> 399d59: b8 01 00 00 00 mov $0x1,%eax 399d5e: 48 81 c4 98 00 00 00 add $0x98,%rsp 399d65: c3 retq 399d66: e8 85 df c8 ff callq 27cf0 <__stack_chk_fail@plt> 399d6b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) ``` If you modify the sanity test to pass `-1` or `FD_SETSIZE` to `FD_SET`, you'll see calls to `fdelt_warn` inserted, and the runtime behaviour is an abort as expected. ```diff diff --git a/src/compat/glibc_sanity_fdelt.cpp b/src/compat/glibc_sanity_fdelt.cpp index 87140d0c7..16974bfa0 100644 --- a/src/compat/glibc_sanity_fdelt.cpp +++ b/src/compat/glibc_sanity_fdelt.cpp @@ -20,7 +20,7 @@ bool sanity_test_fdelt() { fd_set fds; FD_ZERO(&fds); - FD_SET(0, &fds); + FD_SET(FD_SETSIZE, &fds); return FD_ISSET(0, &fds); } #endif ``` ```bash 0000000000399d20 <sanity_test_fdelt()>: 399d20: 48 81 ec 98 00 00 00 sub $0x98,%rsp 399d27: b9 10 00 00 00 mov $0x10,%ecx 399d2c: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax 399d33: 00 00 399d35: 48 89 84 24 88 00 00 mov %rax,0x88(%rsp) 399d3c: 00 399d3d: 31 c0 xor %eax,%eax 399d3f: 48 89 e7 mov %rsp,%rdi 399d42: fc cld 399d43: f3 48 ab rep stos %rax,%es:(%rdi) 399d46: 48 c7 c7 ff ff ff ff mov $0xffffffffffffffff,%rdi 399d4d: e8 3e ff ff ff callq 399c90 <__fdelt_warn> 399d52: 0f b6 04 24 movzbl (%rsp),%eax 399d56: 83 e0 01 and $0x1,%eax 399d59: 48 8b 94 24 88 00 00 mov 0x88(%rsp),%rdx 399d60: 00 399d61: 64 48 33 14 25 28 00 xor %fs:0x28,%rdx 399d68: 00 00 399d6a: 75 08 jne 399d74 <sanity_test_fdelt()+0x54> 399d6c: 48 81 c4 98 00 00 00 add $0x98,%rsp 399d73: c3 retq 399d74: e8 77 df c8 ff callq 27cf0 <__stack_chk_fail@plt> 399d79: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) ``` ```bash src/bitcoind *** buffer overflow detected ***: src/bitcoind terminated Aborted ``` I think the test should should be removed and replaced (if possible) with additional checks in security-check.py. I was thinking about adding a version of [this script](https://github.com/fanquake/core-review/blob/master/fortify.py) as part of the output, but that needs more thought. I'll address this in a follow up. ACKs for top commit: laanwj: ACK df6bde031b24112abf3a94337a2c096698acde6e Tree-SHA512: d8b3af4f4eb2d6c767ca6e72ece51d0ab9042e1bbdfcbbdb7ad713414df21489ba3217662b531b8bfdac0265d2ce5431abfae6e861b6187d182ff26c6e59b32d
2020-05-13Merge #18738: build: Suppress -Wdeprecated-copy warningsfanquake
0c63f808542ba02fc41aa90b1d96e9123f16d8ad build: Suppress -Wdeprecated-copy warnings (Hennadii Stepanov) Pull request description: Tomorrow, on Apr 23 the Ubuntu 20.04 release is expected. It packaged with Qt 5.12 LTS that has a nasty peculiarity to cause modern compilers, including Clang 10.0 and GCC 9.3, to emit spammy `-Wdeprecated-copy` warnings (#15822, #18419). This PR suppress such warnings _temporarily_, until the [upstream is fixed](https://codereview.qt-project.org/c/qt/qtbase/+/272258). Here are some affected systems (with system packages): - Ubuntu 20.04 LTS + Qt 5.12.8 LTS + { Clang 10.0 | GCC 9.3 } - Fedora 32 + Qt 5.13.2 + Clang 10.0 Reference: [QTBUG-75210](https://bugreports.qt.io/browse/QTBUG-75210) Also see **fanquake**'s [comment](https://github.com/bitcoin/bitcoin/pull/18738#issuecomment-622956100). ACKs for top commit: MarcoFalke: ACK 0c63f808542ba02fc41aa90b1d96e9123f16d8ad seems fine to disable this warning for the 0.21.0 release temporarily and then enable it for 0.22.0, when boost is removed. fanquake: ACK 0c63f808542ba02fc41aa90b1d96e9123f16d8ad - I think it's ok to suppress these for now, given that `-Wdeprecated-copy` is enabled (via `-Wextra`) in GCC 9 and Clang 10. The Qt output is pretty noisy, and there's a few warnings from Boost as well. Tree-SHA512: 7064a3272bc9eae00b73a16c421ac58be148f374cbef87320e8f092f52761f6e98166eff60346b70867f8a69a9698a79455dc16b42d92f8fbe7c56519571ac08
2020-05-13Merge #16710: build: Enable -Wsuggest-override if availablefanquake
839add193b13c17a40f42ff69d973caeb800d3f2 build: Enable -Wsuggest-override (Hennadii Stepanov) de5e91c3034f320f84ee0308a3c31659635d136a refactor: Add BerkeleyDatabaseVersion() function (Hennadii Stepanov) Pull request description: From GCC [docs](https://gcc.gnu.org/onlinedocs/gcc-9.2.0/gcc/Warning-Options.html): > `-Wsuggest-override` > Warn about overriding virtual functions that are not marked with the override keyword. ~This PR is based on #16722 (the first commit).~ See: https://github.com/bitcoin/bitcoin/pull/16722#issuecomment-584111086 ACKs for top commit: fanquake: ACK 839add193b13c17a40f42ff69d973caeb800d3f2 vasild: ACK 839add193 practicalswift: ACK 839add193b13c17a40f42ff69d973caeb800d3f2 assuming Travis is happy: patch looks correct Tree-SHA512: 1e8cc085da30d41536deff9b181962c1882314ab252c2ad958294087ae1e5a0dfa4886bdbe36f21cf6ae71df776a8420f349f007d4b5b49fd79ba98ce308965a
2020-05-12build: Enable -Wsuggest-overrideHennadii Stepanov
2020-05-12build: multiprocess autotools changesRussell Yanofsky
autoconf and automake changes to support multiprocess gui/node/wallet execution. This adds a new --enable-multiprocess flag, and build configuration code to detect libraries needed for multiprocess support. The --enable-multiprocess flag builds new bitcoin-node and bitcoin-gui executables, which are updated in https://github.com/bitcoin/bitcoin/pull/10102 to communicate across processes. But for now they are functionally equivalent to existing bitcoind and bitcoin-qt executables.
2020-05-12Merge #18928: build: don't pass -w when building for Windowsfanquake
89fea68ffdbd97394d891177e664f896b3e7d1e6 build: don't pass -w when building for Windows (fanquake) Pull request description: This has been around since the introduction of autotools. However at this point I'm not sure we'd ever want to suppress all warnings when performing a build, and given that CXX FLAGS will have been overriden when cross-compiling for Windows (using depends), this would rarely, if-ever be used anyways. From https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html: > -w > > Inhibit all warning messages. ACKs for top commit: hebasto: ACK 89fea68ffdbd97394d891177e664f896b3e7d1e6 Tree-SHA512: 2b5bdef7fff5c87b28199f5822cab3cdf600c90c01a40db5cd85053eef5dcb5816e2e97ff61a30ff94b4f0c6cb7be22beaef34d82235bdf05ff9da865d40b381
2020-05-10build: don't pass -w when building for Windowsfanquake
This has been around since the introduction of autotools. However at this point I'm not sure we'd every want to suppress all warnings when performing a build, and given that CXX FLAGS will have been overriden when cross-compiling for Windows (using depends), this would rarely, if-ever be used anyways. From https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html: -w Inhibit all warning messages.
2020-05-09build: Enable -Werror=sign-compareBen Woosley
Explicitly add -Wsign-compare as well - not required for all compilers, as GCC activates it under -Wall, but may impact clang, etc.
2020-05-07test: remove glibc fdelt sanity checkfanquake
As is, this sanity check doesn't seem to be testing fdelt_chk, because passing a value of "0" to FD_SET wont cause the compiler to insert any calls to fdelt_chk(). The documentation is a little misleading. If we actually triggered fdelt_chk at runtime, bitcoind would abort. I think this check would be better replaced (if possible) by additional checks in security-check.py. The compiler may insert a call to fdelt_warn() (aliased with fdelt_chk in glibc) at compile time if it can determine that an invalid value is being passed to FD_SET. These checks are essentially; value < 0 or value >= FD_SETSIZE along with a check for wether the value is a compile time constant. If the compiler can determine an invalid value is being passed, a call to fdelt_warn will be inserted. Passing 0 should never cause a call to be inserted. You can check this after compiling: ```bash objdump -dC bitcoind | grep sanity_fdelt ... 0000000000399d20 <sanity_test_fdelt()>: 399d20: 48 81 ec 98 00 00 00 sub $0x98,%rsp 399d27: b9 10 00 00 00 mov $0x10,%ecx 399d2c: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax 399d33: 00 00 399d35: 48 89 84 24 88 00 00 mov %rax,0x88(%rsp) 399d3c: 00 399d3d: 31 c0 xor %eax,%eax 399d3f: 48 89 e7 mov %rsp,%rdi 399d42: fc cld 399d43: f3 48 ab rep stos %rax,%es:(%rdi) 399d46: 48 8b 84 24 88 00 00 mov 0x88(%rsp),%rax 399d4d: 00 399d4e: 64 48 33 04 25 28 00 xor %fs:0x28,%rax 399d55: 00 00 399d57: 75 0d jne 399d66 <sanity_test_fdelt()+0x46> 399d59: b8 01 00 00 00 mov $0x1,%eax 399d5e: 48 81 c4 98 00 00 00 add $0x98,%rsp 399d65: c3 retq 399d66: e8 85 df c8 ff callq 27cf0 <__stack_chk_fail@plt> 399d6b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) ``` To test, you could modify this test to pass -1 to FD_SET, and check that a call to fdelt_warn() is inserted, and that running bitcoind fails. i.e: ```bash 0000000000399d20 <sanity_test_fdelt()>: 399d20: 48 81 ec 98 00 00 00 sub $0x98,%rsp 399d27: b9 10 00 00 00 mov $0x10,%ecx 399d2c: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax 399d33: 00 00 399d35: 48 89 84 24 88 00 00 mov %rax,0x88(%rsp) 399d3c: 00 399d3d: 31 c0 xor %eax,%eax 399d3f: 48 89 e7 mov %rsp,%rdi 399d42: fc cld 399d43: f3 48 ab rep stos %rax,%es:(%rdi) 399d46: 48 c7 c7 ff ff ff ff mov $0xffffffffffffffff,%rdi 399d4d: e8 3e ff ff ff callq 399c90 <__fdelt_warn> 399d52: 0f b6 04 24 movzbl (%rsp),%eax 399d56: 83 e0 01 and $0x1,%eax 399d59: 48 8b 94 24 88 00 00 mov 0x88(%rsp),%rdx 399d60: 00 399d61: 64 48 33 14 25 28 00 xor %fs:0x28,%rdx 399d68: 00 00 399d6a: 75 08 jne 399d74 <sanity_test_fdelt()+0x54> 399d6c: 48 81 c4 98 00 00 00 add $0x98,%rsp 399d73: c3 retq 399d74: e8 77 df c8 ff callq 27cf0 <__stack_chk_fail@plt> 399d79: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) ``` ```bash ./src/bitcoind *** buffer overflow detected ***: src/bitcoind terminated Aborted ```
2020-05-07build: remove fdelt_chk backwards compatibility codefanquake
Now that we require glibc 2.17 or later, we no longer need to check for different return types in fdelt_chk. It was changed from unsigned long int to long int in glibc 2.16 . See this commit: https://sourceware.org/git/?p=glibc.git;a=commit;h=ceb9e56b3d1f8c1922e0526c2e841373843460e2 and related issue: https://sourceware.org/bugzilla/show_bug.cgi?id=14210.
2020-05-07Merge #18535: build: remove -Qunused-arguments workaround for clang + ccachefanquake
a029805f57fa9a4ab9867c0d1e865675d57537c7 build: remove -Qunused-arguments workaround for clang + ccache (fanquake) Pull request description: This was added in 386efb7695debaf5f0f328a2e4c9abc342161665 to address spammy Clang warnings when building with ccache. The issue was addressed in [ccache 3.2](https://bugzilla.samba.org/show_bug.cgi?id=8118), and from a look at most major distros, it's only Debian Jessie that has a version of ccache older than that ([3.1](https://packages.debian.org/jessie/ccache)). Therefore I think it's acceptable to drop this workaround, and re-enable warnings for unused driver arguments (when compiling using Clang and ccache). ACKs for top commit: hebasto: ACK a029805f57fa9a4ab9867c0d1e865675d57537c7. vasild: utACK a029805f57fa9a4ab9867c0d1e865675d57537c7 Tree-SHA512: f887b9bd12f9c1c8d209943b86e8dafe33cfd1572912f2cafabe08ffe403973e48f0f7289280a8c6db9263c57aad43fbd4bb72f42db762eb090f3b1ef0538f43
2020-05-06Merge #17874: build: make linker checks more robustWladimir J. van der Laan
03da4c7781fe52cac48530ca292af4d794ae28e2 build: make linker checks more robust (Cory Fields) Pull request description: Check for a flag to turn linker warnings into errors. When flags are passed to linkers via the compiler driver using a -Wl,-foo flag, linker warnings may be swallowed rather than bubbling up. This is one of [Corys commits](https://github.com/theuni/bitcoin/commit/b9acd3d33e40de5d95901d591a8703a5974195ee) that I've modified to also add `-Wl,-fatal_warnings` for darwin. ACKs for top commit: vasild: re-ACK 03da4c778 Tree-SHA512: 212031d619ed88e52aaae30cf3b711681d72c4d670884406403605d1d86c784c84cb07e2e0d6c30926e659db8f14f8dabd5af3de5291637f8080d6dfee358248
2020-05-06Merge #18843: build: warn on potentially uninitialized readsWladimir J. van der Laan
71f183a49b714a28622277fa668d8f9f3dac0aae build: warn on potentially uninitialized reads (Vasil Dimov) Pull request description: * Enable `conditional-uninitialized` warning class to show potentially uninitialized reads. * Fix the sole such warning in Bitcoin Core in `GetRdRand()`: `r1` would be set to `0` on `rdrand` failure, so initializing it to `0` is a non-functional change. ACKs for top commit: practicalswift: ACK 71f183a49b714a28622277fa668d8f9f3dac0aae laanwj: ACK 71f183a49b714a28622277fa668d8f9f3dac0aae Tree-SHA512: 2c1d8caacd86424b16a9d92e5df19e0bedb51ae111eecad7e3bfa46447bc88e5fff1f32dacf6c4a28257ebb3d87e79f80f074ce2c523ce08b1a0c0a67ab44204
2020-05-06build: make linker checks more robustCory Fields
Check for a flag to turn linker warnings into errors. When flags are passed to linkers via the compiler driver using a -Wl,-foo flag, linker warnings may be swallowed rather than bubbling up. Co-authored-by: fanquake <fanquake@gmail.com>
2020-05-05build: enable -Werror=gnuVasil Dimov
Stop the build if a warning is emitted due to `-Wgnu` and `--enable-werror` has been used. As usual - this would help notice such a warning that is about to be introduced in new code. This is a followup to https://github.com/bitcoin/bitcoin/pull/18088 build: ensure we aren't using GNU extensions
2020-05-05build: Suppress -Wdeprecated-copy warningsHennadii Stepanov
2020-05-03build: warn on potentially uninitialized readsVasil Dimov
Enable -Wconditional-uninitialized to warn on potentially uninitialized reads. Fix the sole such warning in Bitcoin Core in GetRdRand(): r1 would be set to 0 on rdrand failure, so initializing it to 0 is a non-functional change. From "Intel 64 and IA-32 ArchitecturesSoftware Developer's Manual" [1], page 1711: "CF=1 indicates that the data in the destination is valid. Otherwise CF=0 and the data in the destination operand will be returned as zeros for the specified width." [1] https://software.intel.com/sites/default/files/managed/39/c5/325462-sdm-vol-1-2abcd-3abcd.pdf
2020-04-30build: add -Wgnu to compile flagsfanquake
When compiling with Clang, this will warn when GNU extensions are used. Info: https://clang.llvm.org/docs/DiagnosticsReference.html#wgnu
2020-04-30Merge #18591: Add C++17 build to TravisWladimir J. van der Laan
c31cbe7cfefc18123eb85ffb2ce509748435efde Add C++17 test to Travis (Pieter Wuille) 7829685e27aae25efb32e07368175c8f664b2218 Add configure option for c++17 (Pieter Wuille) 0fbde488b24f62b4bbbde216647941dcac65c81a Support conversion between Spans of compatible types (Pieter Wuille) 7cbfebbf3df0d26f518811e0bfb7abf270c83e37 Update ax_cxx_compile_stdcxx.m4 (Pieter Wuille) Pull request description: This adds a `--enable-c++17` option to the configure script, fixes the only C++17 incompatibility (with a commit taken from #18468), and adds a Travis test for it. This is all off by default, and release builds remain C++11. It implements the first step of the plan in https://github.com/bitcoin/bitcoin/issues/16684. ACKs for top commit: elichai: tACK c31cbe7cfefc18123eb85ffb2ce509748435efde practicalswift: Tested ACK c31cbe7cfefc18123eb85ffb2ce509748435efde hebasto: ACK c31cbe7cfefc18123eb85ffb2ce509748435efde, tested on Linux Mint 19.3 both C++11 and C++17 modes. Compiled and passed tests locally. Tree-SHA512: a4b00776dbceef9c12abbb404c6bcd48f7916ce24c8c7a14116355f64e817578b7fcddbedd5ce435322319d1e4de43429b68553f4d96d970c308fe3e3e59b9d1
2020-04-30Merge #18437: util: Detect posix_fallocate() instead of assumingWladimir J. van der Laan
182dbdf0f4b6e6484b0d4588aaefacc75862a99c util: Detect posix_fallocate() instead of assuming (Vasil Dimov) Pull request description: Don't assume that `posix_fallocate()` is available on Linux and not available on other operating systems. At least FreeBSD has it and we are not using it. Properly check whether `posix_fallocate()` is present and use it if it is. ACKs for top commit: laanwj: ACK 182dbdf0f4b6e6484b0d4588aaefacc75862a99c Tree-SHA512: f9ed4bd661f33ff6b2b1150591e860b3c1f44e12b87c35e870d06a7013c4e841ed2bf17b41ad6b18fe471b0b23a4b5e42cf1400637180888e0bc56c254fe0766
2020-04-27doc: Better explain GNU ld's dislike of ld64's optionsfanquake
There's also now more than a single option being special cased for darwin.
2020-04-22Merge #18709: doc: note why we can't use thread_local with glibc back compatfanquake
b155fcda5186c59fc4fb2a9eaaf791d132e0ab30 doc: fix typo in configure.ac (fanquake) 20a30922fbf6ba14e250ca649239af115dbbe7b0 doc: note why we can't use thread_local with glibc back compat (fanquake) Pull request description: Given that we went through a [gitian build](https://github.com/bitcoin/bitcoin/pull/18681) to remember why this is the case, we might as well make a note of it in configure.ac. [From #18681](https://github.com/bitcoin/bitcoin/pull/18681#issuecomment-615526634): Looking at the Linux build log, this has failed with: ```bash Checking glibc back compat... bitcoind: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18 bitcoind: failed IMPORTED_SYMBOLS bitcoin-cli: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18 bitcoin-cli: failed IMPORTED_SYMBOLS bitcoin-tx: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18 bitcoin-tx: failed IMPORTED_SYMBOLS bitcoin-wallet: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18 bitcoin-wallet: failed IMPORTED_SYMBOLS test/test_bitcoin: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18 test/test_bitcoin: failed IMPORTED_SYMBOLS bench/bench_bitcoin: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18 bench/bench_bitcoin: failed IMPORTED_SYMBOLS qt/bitcoin-qt: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18 ``` `__cxa_thread_atexit_impl` is used for [thread_local variable destruction](https://sourceware.org/glibc/wiki/Destructor%20support%20for%20thread_local%20variables): > To implement this support, glibc defines __cxa_thread_atexit_impl exclusively for use by libstdc++ (which has the __cxa_thread_atexit to wrap around it), that registers destructors for thread_local variables in a list. Upon thread or process exit, the destructors are called in reverse order in which they were added. As suggested, this only became available in glibc 2.18. From the [2.18 release notes](https://sourceware.org/legacy-ml/libc-alpha/2013-08/msg00160.html): > * Add support for calling C++11 thread_local object destructors on thread and program exit. This needs compiler support for offloading C++11 destructor calls to glibc. ACKs for top commit: hebasto: ACK b155fcda5186c59fc4fb2a9eaaf791d132e0ab30 Tree-SHA512: 5b9567e4a70598a4b0b91956f44ae0d93091db17c84cbf9817dac6cfa992c97d3438a8b1bb66644c74891f2149e44984daed445d22de93ca8858c5b0eabefb40
2020-04-21doc: fix typo in configure.acfanquake
s/liner/linker/
2020-04-20doc: note why we can't use thread_local with glibc back compatfanquake
2020-04-17build: Set libevent minimum version to 2.0.21Hennadii Stepanov
2020-04-14util: Detect posix_fallocate() instead of assumingVasil Dimov
Don't assume that `posix_fallocate()` is available on Linux and not available on other operating systems. At least FreeBSD has it and we are not using it. Properly check whether `posix_fallocate()` is present and use it if it is.
2020-04-11Add configure option for c++17Pieter Wuille
2020-04-11Update ax_cxx_compile_stdcxx.m4Pieter Wuille
2020-04-10Revert "Merge #16367: Multiprocess build support"MarcoFalke
This reverts the changes made in merge commit 1b307613604883daea4913a65da30ae073c9dc4d: This reverts commit b919efadff3d0393f4a8c3c1dc735f7ac5c665bb. This reverts commit d54f64c6c700be0604190f52c84fc5f1cdd9f02f. This reverts commit 787f40668dc15980c3d6de028d7950c08175d84a. This reverts commit d6306466626635e6fee44385e6a688c8dc118eb5. This reverts commit e6e44eedd56ecaf59f3fabf8e07ab7dee0ddb1b6.
2020-04-10Merge #16367: Multiprocess build supportMarcoFalke
b919efadff3d0393f4a8c3c1dc735f7ac5c665bb depends: Use default macos clang compiler (Russell Yanofsky) d54f64c6c700be0604190f52c84fc5f1cdd9f02f Add multiprocess travis configuration (Russell Yanofsky) 787f40668dc15980c3d6de028d7950c08175d84a Set LD_LIBRARY_PATH consistently in travis tests (Russell Yanofsky) d6306466626635e6fee44385e6a688c8dc118eb5 libmultiprocess depends build (Russell Yanofsky) e6e44eedd56ecaf59f3fabf8e07ab7dee0ddb1b6 Multiprocess build changes (Russell Yanofsky) Pull request description: This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10). This splits autotools, depends build, and travis changes out of #10102, so code changes and build system changes can be reviewed separately. ACKs for top commit: hebasto: re-ACK b919efadff3d0393f4a8c3c1dc735f7ac5c665bb, rebased only since my [previous](https://github.com/bitcoin/bitcoin/pull/16367#issuecomment-605514556) review. Tree-SHA512: ebc5e403cc99a0d9629ed7fe1595e01d57e6d1255cbf03968a3196ff6f528f734c78060fdc065724ee1f923bcc5aa2b29470fcb36a7f15957eb57c76d58178a4
2020-04-10Merge #18504: build: Drop bitcoin-tx and bitcoin-wallet dependencies on libeventMarcoFalke
01a3392b1b778fa4fcf568013326d6ea1de4fb3b Drop bitcoin-wallet dependency on libevent (Russell Yanofsky) 0660119ac372c2863d14060ac1bc9bc243771f94 Drop unintended bitcoin-tx dependency on libevent (Russell Yanofsky) Pull request description: This fixes compile errors trying to build bitcoin-tx and bitcoin-wallet without libevent, which were reported by Luke Dashjr in https://github.com/bitcoin/bitcoin/issues/18465 The fix avoiding `bitcoin-tx` dependency on libevent just adds a conditional build rule. This is implemented in the first commit (more details in commit description). The fix avoiding `bitcoin-wallet` dependency on libevent requires minor code changes, because `bitcoin-wallet` (unlike `bitcoin-tx`) links against code that calls `urlDecode` / `evhttp_uridecode`. This fix is implemented in the second commit (again details in the commit description). ACKs for top commit: jonasschnelli: utACK 01a3392b1b778fa4fcf568013326d6ea1de4fb3b. Tree-SHA512: d2245e912ab494cccceeb427a1eca8e55b01a0006ff93eebcfb5461ae7cecd1083ac2de443d9db036b18bdc6f0fb615546caaa20c585046f66d234937f74870a
2020-04-10build: Bump version to 0.20.99Wladimir J. van der Laan
Now that 0.20 branch has been split off, master is 0.20.99 (pre-0.21). Also clean out release notes. Tree-SHA512: bba6133ae9708f75206c8934901b9f9909a233330f4dfefb3c24175bf8e11631cdc89a5d24a22421a73083f7eb743e977db8020b87dfbd3c1e6043929a19a285
2020-04-06build: remove -Qunused-arguments workaround for clang + ccachefanquake
This was added in 386efb7695debaf5f0f328a2e4c9abc342161665 to address spammy Clang warnings when building with ccache. The issue was addressed in ccache 3.2 (https://bugzilla.samba.org/show_bug.cgi?id=8118, Nov 2014), and from a look at all major distros, it's only Debian Jessie that has a version of ccache older than that (3.1). Therefore I think it's acceptable to drop this workaround, and re-enable warnings for unused driver arguments (when compiling using Clang).
2020-04-05Multiprocess build changesRussell Yanofsky
autotools and automake changes to support multiprocess execution. This adds a new --enable-multiprocess flag, and build configuration code to detect libraries needed for multiprocess support. The --enable-multiprocess flag builds new bitcoin-node and bitcoin-gui executables, which are updated in https://github.com/bitcoin/bitcoin/pull/10102 to communicate across processes. But for now they are functionally equivalent to existing bitcoind and bitcoin-qt executables.
2020-04-03test: remove rapidcheck integration and testsfanquake
2020-04-02Drop unintended bitcoin-tx dependency on libeventRussell Yanofsky
Don't include util/url.cpp to libbitcoin_util.a when libevent isn't available. This fixes a compile error trying to build bitcoin-tx without libevent reported by Luke Dashjr in https://github.com/bitcoin/bitcoin/issues/18465 Fixes #18465
2020-04-02build: Detect gmtime_* definitions via configureBen Woosley
This improves the portability of the codebase and fixes compilation with mingw-w64 7.0+. Co-authored-by: fanquake <fanquake@gmail.com>
2020-03-27Merge #18107: build: Add cov_fuzz targetWladimir J. van der Laan
faf7d4fa86b700ec272806cd2bd8666a92405619 build: Add cov_fuzz target (MarcoFalke) fac71e364e4bbaeffc35e45aff8c8c2c6f2b5c67 build: link fuzz/test_runner.py for out-of-tree builds (MarcoFalke) faf2c5aca01643eb560287e08f9c0a7ca0ac9c88 build: Remove unused USE_COVERAGE (MarcoFalke) Pull request description: Only libFuzzer is supported right now, so clang is required. Thus, this needs a workaround such as https://github.com/bitcoin/bitcoin/issues/12602#issuecomment-562788247 Can be tested with: ``` mkdir build && cd build ../configure --enable-fuzz --with-sanitizers=fuzzer --enable-lcov --enable-lcov-branch-coverage CC=clang CXX=clang++ make $MAKEJOBS make cov_fuzz ACKs for top commit: practicalswift: ACK faf7d4fa86b700ec272806cd2bd8666a92405619 Tree-SHA512: 6828f8f81d95f6781713d0b09d7eba2ffdb50217e09ca839db61791a4ed70024859c7a0cb01d9eede79166d574dd57ece01f9d9fe2610d4a72a4ca4a4ce0b838
generated by cgit v1.2.3 (git 2.26.2) at 2024-07-05 12:20:16 +0000