On Dec 28, 2004, at 5:31 PM, schnetter at aei dot mpg dot de wrote:
The call to setvbuf switches to line buffering, meaning that stderr is flushed
only after every line and not after every character. I assume that cc1 (as
opposed to f951) switches to line buffered stderr at some time, or else
outputs its error messages in some other way which is equivalent to some
internal buffering. f951 outputs its messages character by character, which
leads to an unnecessary overhead.
Actually cc1 just uses fprintf instead of fputc so maybe that is the problem, maybe we should be doing our own buffering.
-- Pinski
