Threads, glibc, and all that

[Ulrich Drepper]

Jason Merrill <jason@cygnus.com> writes:

> Huh?  -ansi just means "compile all conformant code".

Exactly.  This also means that headers which might provide conflicting
definitions (e.g., global variables, macros) must not be used.  E.g.,
pthread.h contains a macro named PTHREAD_COND_INITIALIZER and so
including this header is invalid because now you cannot write anymore
a valid ISO C program which defines a local variable named
PTHREAD_COND_INITIALIZER.

-- Uli
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