re PR sanitizer/81066 (sanitizer_stoptheworld_linux_libcdep.cc:276:22: error:…

re PR sanitizer/81066 (sanitizer_stoptheworld_linux_libcdep.cc:276:22: error: aggregate ‘sigaltstack handler_stack’ has incomplete type and cannot be defined)

	PR sanitizer/81066
	* sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
	* sanitizer_common/sanitizer_linux.cc: Likewise.
	* sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
	* tsan/tsan_platform_linux.cc: Likewise.

From-SVN: r250200

libsanitizer/ChangeLog

+2017-07-14  Jakub Jelinek  <jakub@redhat.com>
+
+	PR sanitizer/81066
+	* sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+	* sanitizer_common/sanitizer_linux.cc: Likewise.
+	* sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+	* tsan/tsan_platform_linux.cc: Likewise.
+
 2017-04-06  Martin Liska  <mliska@suse.cz>
 
 	PR sanitizer/80166

libsanitizer/sanitizer_common/sanitizer_linux.cc

@@ -605,8 +605,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
 }
 #endif
 
-uptr internal_sigaltstack(const struct sigaltstack *ss,
-                         struct sigaltstack *oss) {
+uptr internal_sigaltstack(const void *ss, void *oss) {
   return internal_syscall(SYSCALL(sigaltstack), (uptr)ss, (uptr)oss);
 }
 

libsanitizer/sanitizer_common/sanitizer_linux.h

@@ -19,7 +19,6 @@
 #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_sigaltstack(const struct sigaltstack* ss,
-                          struct sigaltstack* oss);
+uptr internal_sigaltstack(const void* ss, void* oss);
 uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
     __sanitizer_sigset_t *oldset);
 

libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc

@@ -273,7 +273,7 @@ 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;

libsanitizer/tsan/tsan_platform_linux.cc

@@ -287,7 +287,7 @@ void InitializePlatform() {
 int ExtractResolvFDs(void *state, int *fds, int nfd) {
 #if SANITIZER_LINUX && !SANITIZER_ANDROID
   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];