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...global be named "errno"? > I wouldn't be surprised if there was a system where the golbal error is not errno. Windows maybe? --renato -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20131123/36e00463/attachment.html>

Hello, On some systems (Linux/glibc, for example), some libm math functions (like cos(double)) might set errno. It is important that we model this, in general, to prevent miscompilation (we would not, for example, want to reorder a call to cos in between a call to open and a call to perror). However, almost no code in the wild checks errno after calls to libm math functions, and this