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On 07/30/2014 09:53 PM, Eric Blake wrote: > > Meanwhile, './gnulib-tool --test stdnoreturn' is failing on cygwin, so > I'm trying to track down why. > > In file included from /usr/include/stdlib.h:11:0, > from ../../gltests/test-stdnoreturn.c:23: > ./../config.h:33:21: error: expected '(' before '__attribute__' > # define _Noreturn __attribute__ ((__noreturn__)) > ^ > Oh, I think I see the problem. Pasting more of the error message: /usr/include/stdlib.h:66:28: error: expected ',' or ';' before ')' token _VOID _EXFUN(abort,(_VOID) _ATTRIBUTE ((noreturn))); ^ Looks like the cygwin headers are broken for misusing 'noreturn' instead of __noreturn__ inside __attribute__; something that is easier to patch in cygwin than work around in gnulib. For more proof: $ printf '#include <stdnoreturn.h>\n#include <stdlib.h>\n' \ | gcc -xc -E - | grep abort void __attribute__((__cdecl__)) abort (void) __attribute__ ((_Noreturn)); $ printf '#include <stdnoreturn.h>\n#include <stdlib.h>\n' \ | gcc -xc -E - -D_Noreturn='__attribute__((__noreturn__))' \ | grep abort void __attribute__((__cdecl__)) abort (void) __attribute__ ((__attribute__((__noreturn__)))); -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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