For Linux/gnu compatibility, preinclude <stdc-predef.h> if the file is available

As reported in llvm bugzilla 32377.
Here’s a patch to add preinclude of stdc-predef.h.

The gcc documentation says “On GNU/Linux, <stdc-predef.h> is pre-included.” See https://gcc.gnu.org/gcc-4.8/porting_to.html;

The preinclude is inhibited with –ffreestanding.

Basically I fixed the failing test cases by adding –ffreestanding which inhibits this behavior.

I fixed all the failing tests, including some in extra/test, there's a separate patch for that which is linked here

Note: this is a recommit after a test failure took down the original (r318669)

Patch By: mibintc
Differential Revision: https://reviews.llvm.org/D34158

llvm-svn: 320391

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/test/Index/c-index-getCursor-test.m b/clang/test/Index/c-index-getCursor-test.m
index 2361af62ab7..d379904c800 100644
--- a/clang/test/Index/c-index-getCursor-test.m
+++ b/clang/test/Index/c-index-getCursor-test.m
@@ -1,5 +1,5 @@
-// RUN: c-index-test -write-pch %t.ast -arch x86_64 -mmacosx-version-min=10.6 -fblocks -x objective-c %s
-// RUN: c-index-test -test-file-scan %t.ast %s > %t 2>&1 && FileCheck --input-file=%t %s
+// RUN: c-index-test -write-pch %t.ast -arch x86_64 -mmacosx-version-min=10.6 -fblocks -x objective-c %s -ffreestanding
+// RUN: c-index-test -test-file-scan %t.ast %s -ffreestanding > %t 2>&1 && FileCheck --input-file=%t %s
 @interface Foo 
 {
 }