From b2f5e2684da060dd821bf90f88df8b6dc9401a40 Mon Sep 17 00:00:00 2001 From: Johannes Sixt Date: Fri, 17 Aug 2007 18:40:36 +0200 Subject: [PATCH] Windows: Work around an oddity when a pipe with no reader is written to. On Windows, write() is implemented using WriteFile(). After the reader closed its end of the pipe, the first WriteFile() returns ERROR_BROKEN_PIPE (which translates to EPIPE), subsequent WriteFile()s return ERROR_NO_DATA, which is translated to EINVAL. Signed-off-by: Johannes Sixt --- write_or_die.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/write_or_die.c b/write_or_die.c index 630be4cb94..e4c8e225fd 100644 --- a/write_or_die.c +++ b/write_or_die.c @@ -34,7 +34,12 @@ void maybe_flush_or_die(FILE *f, const char *desc) return; } if (fflush(f)) { - if (errno == EPIPE) + /* + * On Windows, EPIPE is returned only by the first write() + * after the reading end has closed its handle; subsequent + * write()s return EINVAL. + */ + if (errno == EPIPE || errno == EINVAL) exit(0); die("write failure on %s: %s", desc, strerror(errno)); }