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