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| author | Peter Maydell <peter.maydell@linaro.org> | 2022-01-11 08:29:00 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2022-01-12 09:22:01 +0000 |
| commit | b37778b840f6dc6d1bbaf0e8e0641b3d48ad77c5 (patch) | |
| tree | 5580827d0e2df737469a3780400b8ff463c33b8f | |
| parent | 7bb1272f40bdbdebcaec1737c412dcb52e414842 (diff) | |
linux-user: Fix clang warning for nios2-linux-user code
The clang in Ubuntu 18.04 (10.0.0-4ubuntu1) produces a warning
on the code added in commit f5ef0e518d03 where we use a
shifted expression in a boolean context:
../../linux-user/elfload.c:2423:16: error: converting the result of '<<' to a boolean always evaluates to true [-Werror,-Wtautological-constant-compare]
} else if (LO_COMMPAGE) {
^
../../linux-user/elfload.c:1102:22: note: expanded from macro 'LO_COMMPAGE'
#define LO_COMMPAGE TARGET_PAGE_SIZE
^
/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/exec/cpu-all.h:231:31: note: expanded from macro 'TARGET_PAGE_SIZE'
#define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
^
1 error generated.
The warning is bogus because whether LO_COMMPAGE is zero or not
depends on compile-time ifdefs; shut the compiler up by adding
an explicit comparison to zero.
Fixes: f5ef0e518d0331 ("linux-user/nios2: Map a real kuser page")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-id: 20220111082900.3341274-1-peter.maydell@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | linux-user/elfload.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 329b2375ef..d3274edfdb 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -2420,7 +2420,7 @@ static void pgb_static(const char *image_name, abi_ulong orig_loaddr, } else { offset = -(HI_COMMPAGE & -align); } - } else if (LO_COMMPAGE) { + } else if (LO_COMMPAGE != 0) { loaddr = MIN(loaddr, LO_COMMPAGE & -align); } |