Zack Weinberg
809b72df6c
[BZ #19239 ] Issue deprecation warnings on macro expansion. ...
By using __glibc_macro_warning instead of __attribute_deprecated__,
we get the deprecation warnings whenever the macros are expanded,
not just when they compile to a function call. This is important
for unintentional uses like the test case in #19239 (C++ var(value)
initialization syntax, with a variable named "major"). It's also
simpler, because __REDIRECT is no longer required.
* misc/sys/sysmacros.h (__SYSMACROS_DM, __SYSMACROS_DM1): New macros.
(__SYSMACROS_DEPRECATION_MSG, __SYSMACROS_FST_DECL_TEMPL)
(__SYSMACROS_FST_IMPL_TEMPL): Delete.
(major, minor, makedev): Use __SYSMACROS_DM in definition, instead
of redirected function names.
* misc/sys/cdefs.h (__glibc_macro_warning): Activate for clang >= 3.5
as well. Document that MESSAGE must be a single string literal.
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809b72df6c