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[compiler-rt] Fix build of Sanitizer-Test_Nolibc after D80648

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Running ninja check-sanitizer fails for after that patch (commit
058f5f6fd8) with the following error:

libRTSanitizerCommon.test.nolibc.x86_64.a(sanitizer_posix.cpp.o): In
function `__sanitizer::GetNamedMappingFd(char const*, unsigned long,
int*)':
..../llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp:358:
undefined reference to `fcntl'
clang-12: error: linker command failed with exit code 1 (use -v to see
invocation)

This patch works around the problem by only calling fcntl if O_CLOEXEC
is not defined.

Reviewed By: plopresti

Differential Revision: https://reviews.llvm.org/D85114
This commit is contained in:
Alex Richardson 2020-08-06 08:56:46 +01:00
parent 3b3cdcc7a5
commit 6148cca708
1 changed files with 4 additions and 4 deletions
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8
compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp
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@ -354,11 +354,11 @@ int GetNamedMappingFd(const char *name, uptr size, int *flags) {
int fd = ReserveStandardFds(
internal_open(shmname, O_RDWR | O_CREAT | O_TRUNC | o_cloexec, S_IRWXU));
CHECK_GE(fd, 0);
if (!o_cloexec) {
int res = fcntl(fd, F_SETFD, FD_CLOEXEC);
CHECK_EQ(0, res);
}
int res = internal_ftruncate(fd, size);
#if !defined(O_CLOEXEC)
res = fcntl(fd, F_SETFD, FD_CLOEXEC);
CHECK_EQ(0, res);
#endif
CHECK_EQ(0, res);
res = internal_unlink(shmname);
CHECK_EQ(0, res);