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[sanitizer] Add missing declarations for sigaltstack syscall wrappers. 

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D73987
This commit is contained in:
Evgenii Stepanov 2020-02-04 12:21:06 -08:00
parent 9b0ce8edfa
commit dd921cb89b
2 changed files with 7 additions and 0 deletions
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2
compiler-rt/include/sanitizer/linux_syscall_hooks.h
View File

@ -3077,6 +3077,8 @@ void __sanitizer_syscall_pre_impl_rt_sigaction(long signum, long act,
long oldact, long sz);
void __sanitizer_syscall_post_impl_rt_sigaction(long res, long signum, long act,
long oldact, long sz);
void __sanitizer_syscall_pre_impl_sigaltstack(long ss, long oss);
void __sanitizer_syscall_post_impl_sigaltstack(long res, long ss, long oss);
#ifdef __cplusplus
} // extern "C"
#endif

5
compiler-rt/test/msan/Linux/syscalls.cpp
View File

@ -8,6 +8,7 @@
#include <string.h>
#include <linux/aio_abi.h>
#include <signal.h>
#include <sys/ptrace.h>
#include <sys/stat.h>
#include <sys/uio.h>
@ -123,5 +124,9 @@ int main(int argc, char *argv[]) {
__sanitizer_syscall_post_socketpair(0, 0, 0, 0, (int *)buf);
assert(__msan_test_shadow(buf, sizeof(buf)) == 2 * sizeof(int));
__msan_poison(buf, sizeof(buf));
__sanitizer_syscall_post_sigaltstack(0, nullptr, (stack_t *)buf);
assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(stack_t));
return 0;
}