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library: for atexit() support, fix fileutils for EPIPE

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When fileutils with stream error checking was borrowed
from GNU lib, an omission was also propagated where an
errno of EPIPE wouldn't be preserved in close_stream()
making a test for EPIPE in close_stdout() meaningless.

This patch corrects such oversight so that an errno of
EPIPE no longer produces 'write error' at program end.

( gnulib provides for optionally ignoring EPIPE, but )
( if a program chooses to ignore it, then their code )
( appears to suffer from this close_stream oversight )

Reference(s):
. original fileutilis addition
commit c7cf98b0e0
. bugzilla report
https://bugzilla.redhat.com/show_bug.cgi?id=976199
This commit is contained in:
Jim Warner 2013-06-25 00:00:00 -05:00 committed by Jaromir Capik
parent b79b927f97
commit ce5e995921
1 changed files with 1 additions and 1 deletions
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lib/fileutils.c
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@ -24,7 +24,7 @@ int close_stream(FILE * stream)
const int prev_fail = (ferror(stream) != 0);
const int fclose_fail = (fclose(stream) != 0);
if (prev_fail || (fclose_fail && (some_pending || errno != EBADF))) {
if (!fclose_fail)
if (!fclose_fail && errno != EPIPE)
errno = 0;
return EOF;
}