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Consistency of function attributes between prototype and definition
- From: Florian Weimer <fweimer at redhat dot com>
- To: "gcc-help at gcc dot gnu dot org" <gcc-help at gcc dot gnu dot org>
- Date: Fri, 2 Oct 2015 13:25:31 +0200
- Subject: Consistency of function attributes between prototype and definition
- Authentication-results: sourceware.org; auth=none
glibc has a preprocessor macro called internal_function which switches
to a different calling convention on certain targets (i386 uses stdcall
and regparams). For non-K&R function definitions, the compiler enforces
that both the prototype declaration and the definition match.
When someone writes a patch on a different architecture than i386 and
forgets to specify internal_function on both prototype and definition,
the build will pass, even though i386 will not compile.
Is there a way to use a certain harmless attribute to detect this
mismatch even on architectures where internal_function has no effect?