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Avoid clang warnings regarding [[__maybe_unused__]].
authorBruno Haible <bruno@clisp.org>
Sat, 28 Jan 2023 08:33:12 +0000 (09:33 +0100)
committerBruno Haible <bruno@clisp.org>
Sat, 28 Jan 2023 08:33:12 +0000 (09:33 +0100)
commit8dbafdffb4f46df26305a5db19f03228a51473b6
treef17bd5010e9b9b85797f57b79caf5c2f95a93f10
parent4cb09c1ada791c12d3f7ac7dbe4b906c00513589
Avoid clang warnings regarding [[__maybe_unused__]].

* m4/gnulib-common.m4 (gl_COMMON_BODY): For clang versions ≥ 6, < 10,
in C++ mode, ignore the __has_c_attribute value and define
_GL_ATTRIBUTE_MAYBE_UNUSED to __attribute__ ((__unused__)), not
[[__maybe_unused__]].
ChangeLog
m4/gnulib-common.m4