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commit 291d4402067760edb7c0f339f9e451787a25e20a
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Aug 27 17:47:46 2021 +0000
Allow #pragma GCC in headers in conformtest
No "#pragma GCC" pragma allows macro-expansion of its arguments, so no
namespace issues arise from use of such pragmas in installed headers.
Ignore them in conformtest tests of header namespace.
Tested for x86_64, in conjunction with Paul's patch
<https://sourceware.org/pipermail/libc-alpha/2021-August/130571.html>
adding use of such pragmas to installed headers shared with gnulib.
(cherry picked from commit 6090a4a1b32fd7859d0ad5b7e9b240bd5fa04b3f)
diff --git a/conform/conformtest.py b/conform/conformtest.py
index 4898e16c9fb96503..164cf2917d464aa1 100644
--- a/conform/conformtest.py
+++ b/conform/conformtest.py
@@ -631,6 +631,14 @@ class HeaderTests(object):
continue
if re.match(r'# [1-9]', line):
continue
+ if line.startswith('#pragma GCC '):
+ # No GCC pragma uses macro expansion, so no
+ # namespace issues arise from such pragmas. (Some
+ # pragmas not in the GCC namespace do macro-expand
+ # their arguments and so could be affected by
+ # macros defined by user code including the
+ # header.)
+ continue
match = re.match(r'#define (.*)', line)
if match:
self.check_token(bad_tokens, match.group(1))