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This is a backport of this patch from 6.5 to 4.9:
https://gcc.gnu.org/git/?p=gcc.git;a=patch;h=8937b94d1a643fd9760714642296d034a45254a8
diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
index 69c9c10..8e53673 100644
--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
@@ -599,8 +599,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
return internal_syscall(__NR_prctl, option, arg2, arg3, arg4, arg5);
}
-uptr internal_sigaltstack(const struct sigaltstack *ss,
- struct sigaltstack *oss) {
+uptr internal_sigaltstack(const void *ss, void *oss) {
return internal_syscall(__NR_sigaltstack, (uptr)ss, (uptr)oss);
}
diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
index 6422df1..8a8e526 100644
--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
+++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
@@ -18,7 +18,6 @@
#include "sanitizer_platform_limits_posix.h"
struct link_map; // Opaque type returned by dlopen().
-struct sigaltstack;
namespace __sanitizer {
// Dirent structure for getdents(). Note that this structure is different from
@@ -28,8 +27,7 @@ struct linux_dirent;
// Syscall wrappers.
uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5);
-uptr internal_sigaltstack(const struct sigaltstack* ss,
- struct sigaltstack* oss);
+uptr internal_sigaltstack(const void *ss, void *oss);
uptr internal_sigaction(int signum, const __sanitizer_kernel_sigaction_t *act,
__sanitizer_kernel_sigaction_t *oldact);
uptr internal_sigprocmask(int how, __sanitizer_kernel_sigset_t *set,
diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
index 6ee63ec..50c21a3 100644
--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
@@ -238,7 +238,7 @@ static int TracerThread(void* argument) {
// Alternate stack for signal handling.
InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
- struct sigaltstack handler_stack;
+ stack_t handler_stack;
internal_memset(&handler_stack, 0, sizeof(handler_stack));
handler_stack.ss_sp = handler_stack_memory.data();
handler_stack.ss_size = kHandlerStackSize;
diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
index fe69430..49f5270 100644
--- a/libsanitizer/tsan/tsan_platform_linux.cc
+++ b/libsanitizer/tsan/tsan_platform_linux.cc
@@ -351,7 +351,7 @@ bool IsGlobalVar(uptr addr) {
// closes within glibc. The code is a pure hack.
int ExtractResolvFDs(void *state, int *fds, int nfd) {
int cnt = 0;
- __res_state *statp = (__res_state*)state;
+ struct __res_state *statp = (struct __res_state*)state;
for (int i = 0; i < MAXNS && cnt < nfd; i++) {
if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
fds[cnt++] = statp->_u._ext.nssocks[i];
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