diff options
| -rw-r--r-- | build-aux/m4/bitcoin_runtime_lib.m4 | 42 | ||||
| -rw-r--r-- | configure.ac | 4 | ||||
| -rw-r--r-- | src/Makefile.test.include | 2 | ||||
| -rw-r--r-- | src/test/fuzz/multiplication_overflow.cpp | 12 |
4 files changed, 51 insertions, 9 deletions
diff --git a/build-aux/m4/bitcoin_runtime_lib.m4 b/build-aux/m4/bitcoin_runtime_lib.m4 new file mode 100644 index 0000000000..1a6922deca --- /dev/null +++ b/build-aux/m4/bitcoin_runtime_lib.m4 @@ -0,0 +1,42 @@ +# On some platforms clang builtin implementations +# require compiler-rt as a runtime library to use. +# +# See: +# - https://bugs.llvm.org/show_bug.cgi?id=28629 + +m4_define([_CHECK_RUNTIME_testbody], [[ + bool f(long long x, long long y, long long* p) + { + return __builtin_mul_overflow(x, y, p); + } + int main() { return 0; } +]]) + +AC_DEFUN([CHECK_RUNTIME_LIB], [ + + AC_LANG_PUSH([C++]) + + AC_MSG_CHECKING([for __builtin_mul_overflow]) + AC_LINK_IFELSE( + [AC_LANG_SOURCE([_CHECK_RUNTIME_testbody])], + [ + AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE_BUILTIN_MUL_OVERFLOW], [1], [Define if you have a working __builtin_mul_overflow]) + ], + [ + ax_check_save_flags="$LDFLAGS" + LDFLAGS="$LDFLAGS --rtlib=compiler-rt -lgcc_s" + AC_LINK_IFELSE( + [AC_LANG_SOURCE([_CHECK_RUNTIME_testbody])], + [ + AC_MSG_RESULT([yes, with additional linker flags]) + RUNTIME_LDFLAGS="--rtlib=compiler-rt -lgcc_s" + AC_DEFINE([HAVE_BUILTIN_MUL_OVERFLOW], [1], [Define if you have a working __builtin_mul_overflow]) + ], + [AC_MSG_RESULT([no])]) + LDFLAGS="$ax_check_save_flags" + ]) + + AC_LANG_POP + AC_SUBST([RUNTIME_LDFLAGS]) +]) diff --git a/configure.ac b/configure.ac index 2bc404250d..0a5456acff 100644 --- a/configure.ac +++ b/configure.ac @@ -1773,6 +1773,10 @@ if test x$build_bitcoin_wallet$build_bitcoin_cli$build_bitcoin_tx$build_bitcoin_ AC_MSG_ERROR([No targets! Please specify at least one of: --with-utils --with-libs --with-daemon --with-gui --enable-bench or --enable-tests]) fi +if test x$enable_fuzz_binary = xyes; then + CHECK_RUNTIME_LIB +fi + AM_CONDITIONAL([TARGET_DARWIN], [test x$TARGET_OS = xdarwin]) AM_CONDITIONAL([BUILD_DARWIN], [test x$BUILD_OS = xdarwin]) AM_CONDITIONAL([TARGET_LINUX], [test x$TARGET_OS = xlinux]) diff --git a/src/Makefile.test.include b/src/Makefile.test.include index d55f5e1850..15929e7352 100644 --- a/src/Makefile.test.include +++ b/src/Makefile.test.include @@ -200,7 +200,7 @@ if ENABLE_FUZZ_BINARY test_fuzz_fuzz_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) test_fuzz_fuzz_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS) test_fuzz_fuzz_LDADD = $(FUZZ_SUITE_LD_COMMON) -test_fuzz_fuzz_LDFLAGS = $(FUZZ_SUITE_LDFLAGS_COMMON) +test_fuzz_fuzz_LDFLAGS = $(FUZZ_SUITE_LDFLAGS_COMMON) $(RUNTIME_LDFLAGS) test_fuzz_fuzz_SOURCES = \ test/fuzz/addition_overflow.cpp \ test/fuzz/addrdb.cpp \ diff --git a/src/test/fuzz/multiplication_overflow.cpp b/src/test/fuzz/multiplication_overflow.cpp index 0f054529a6..c7251650c2 100644 --- a/src/test/fuzz/multiplication_overflow.cpp +++ b/src/test/fuzz/multiplication_overflow.cpp @@ -2,6 +2,10 @@ // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. +#if defined(HAVE_CONFIG_H) +#include <config/bitcoin-config.h> +#endif + #include <test/fuzz/FuzzedDataProvider.h> #include <test/fuzz/fuzz.h> #include <test/fuzz/util.h> @@ -10,14 +14,6 @@ #include <string> #include <vector> -#if defined(__has_builtin) -#if __has_builtin(__builtin_mul_overflow) -#define HAVE_BUILTIN_MUL_OVERFLOW -#endif -#elif defined(__GNUC__) -#define HAVE_BUILTIN_MUL_OVERFLOW -#endif - namespace { template <typename T> void TestMultiplicationOverflow(FuzzedDataProvider& fuzzed_data_provider) |