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The
fixincludes script interacts badly with automounters; if the
directory of system header files is automounted, it tends to be
unmounted while fixincludes is running. This would seem to be a
bug in the automounter. We don't know any good way to work around it.
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The
fixproto script will sometimes add prototypes for the
sigsetjmp and siglongjmp functions that reference the
jmp_buf type before that type is defined. To work around this,
edit the offending file and place the typedef in front of the
prototypes.
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There are several obscure case of mis-using struct, union, and
enum tags that are not detected as errors by the compiler.
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When `-pedantic-errors' is specified, GNU C will incorrectly give
an error message when a function name is specified in an expression
involving the comma operator.
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Loop unrolling doesn't work properly for certain C++ programs. This is
a bug in the C++ front end. It sometimes emits incorrect debug info, and
the loop unrolling code is unable to recover from this error.