re PR sanitizer/64354 (no preprocessor symbol __SANITIZE_THREAD__)

2016-05-19  Maxim Ostapenko  <m.ostapenko@samsung.com>

	PR sanitizer/64354
	* cppbuiltin.c (define_builtin_macros_for_compilation_flags): Add new
	builtin __SANITIZE_THREAD__ macros for fsanitize=thread switch.
	* doc/cpp.texi: Document new macros.

	* c-c++-common/tsan/sanitize-thread-macro.c: New test.

From-SVN: r236457

gcc/ChangeLog

+2016-05-19  Maxim Ostapenko  <m.ostapenko@samsung.com>
+
+	PR sanitizer/64354
+	* cppbuiltin.c (define_builtin_macros_for_compilation_flags): Add new
+	builtin __SANITIZE_THREAD__ macros for fsanitize=thread switch.
+	* doc/cpp.texi: Document new macros.
+
 2016-05-19 Bin Cheng  <bin.cheng@arm.com>
 
 	PR tree-optimization/69848

gcc/cppbuiltin.c

@@ -92,6 +92,9 @@ define_builtin_macros_for_compilation_flags (cpp_reader *pfile)
   if (flag_sanitize & SANITIZE_ADDRESS)
     cpp_define (pfile, "__SANITIZE_ADDRESS__");
 
+  if (flag_sanitize & SANITIZE_THREAD)
+    cpp_define (pfile, "__SANITIZE_THREAD__");
+
   if (optimize_size)
     cpp_define (pfile, "__OPTIMIZE_SIZE__");
   if (optimize)

gcc/doc/cpp.texi

@@ -2362,6 +2362,9 @@ in use.
 This macro is defined, with value 1, when @option{-fsanitize=address}
 or @option{-fsanitize=kernel-address} are in use.
 
+@item __SANITIZE_THREAD__
+This macro is defined, with value 1, when @option{-fsanitize=thread} is in use.
+
 @item __TIMESTAMP__
 This macro expands to a string constant that describes the date and time
 of the last modification of the current source file. The string constant

gcc/testsuite/ChangeLog

+2016-05-19  Maxim Ostapenko  <m.ostapenko@samsung.com>
+
+	PR sanitizer/64354
+	* c-c++-common/tsan/sanitize-thread-macro.c: New test.
+
 2016-05-19  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/70729

gcc/testsuite/c-c++-common/tsan/sanitize-thread-macro.c

+/* Check that -fsanitize=thread options defines __SANITIZE_THREAD__ macros.  */
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */
+
+int
+main ()
+{
+#ifndef __SANITIZE_THREAD__
+  bad construction
+#endif
+  return 0;
+}