[sanitizer] hide PR_SET_NAME under an ifdef (for older kernels)

llvm-svn: 172523

1 files changed, 8 insertions, 0 deletions

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
index 3b01df14e6d..0ba80d47329 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
@@ -369,16 +369,24 @@ bool MemoryMappingLayout::GetObjectNameAndOffset(uptr addr, uptr *offset,
 }
 
 bool SanitizerSetThreadName(const char *name) {
+#ifdef PR_SET_NAME
   return 0 == prctl(PR_SET_NAME, (unsigned long)name, 0, 0, 0);  // NOLINT
+#else
+  return false;
+#endif
 }
 
 bool SanitizerGetThreadName(char *name, int max_len) {
+#ifdef PR_GET_NAME
   char buff[17];
   if (prctl(PR_GET_NAME, (unsigned long)buff, 0, 0, 0))  // NOLINT
     return false;
   internal_strncpy(name, buff, max_len);
   name[max_len] = 0;
   return true;
+#else
+  return false;
+#endif
 }
 
 #ifndef SANITIZER_GO