https://llvm.org/bugs/show_bug.cgi?id=26717
Bug ID: 26717
Summary: libc++ recursive setjmp() macro causes
-Wdisabled-macro-expansion warning
Product: new-bugs
Version: trunk
Hardware: Macintosh
OS: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: s...@rogue-research.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Consider this reduced/trivial C++ snippet:
----------
#include <setjmp.h>
int main()
{
setjmp(0);
return 0;
}
----------
compiling with clang trunk gives:
/Users/sean/test.cxx:5:3: warning: disabled expansion of recursive macro
[-Wdisabled-macro-expansion]
setjmp(0);
^
/Users/sean/llvm/llvm-rel-install/bin/../include/c++/v1/setjmp.h:40:21: note:
expanded from macro 'setjmp'
#define setjmp(env) setjmp(env)
^
(If I use a .c file, I don't get the warning.)
As that's an llvm header (and has '#pragma GCC system_header'), I would hope
not to get this warning.
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