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On Mar 11 16:05, Kaz Kylheku wrote: > We can reproduce the problem with just file streams using > a much simpler program: > > #include <stdio.h> > > int main(void) > { > FILE *out = fopen("file", "w+"); > setvbuf(out, (char *) NULL, _IOLBF, 0); > getc(out); > clearerr(out); > fseek(out, 0, SEEK_SET); > putc('a', out); > putc('b', out); > putc('c', out); > putc('d', out); > putc('e', out); > putc('\n', out); > fclose(out); > return 0; > } > > The contents of file end up being "\n": one empty > line, instead of "abcde\n": > > $ cat file > > $ Thanks for the testcase. I can reproduce the issue and I see where the problem occurs, but I'm still puzzled. Comparing the code in our newlib C library with its BSD counterparts, I could swear the same behaviour happens on OpenBSD as well. If not (which needs testing), I wonder why and where newlib's actually different. Right now I don't see the difference. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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