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[BZ #1996]

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2006-08-14  Ulrich Drepper  <drepper@redhat.com>
	[BZ #1996]
	* libio/memstream.c (open_memstream): Allocate initial buffer with
	calloc.
	* libio/wmemstream.c (open_wmemstream): Likewise.
	* libio/strops.c: Pretty printing.
	(_IO_str_overflow): Clear uninitialized part of the new buffer.
	(enlarge_userbuf): New function.
	(_IO_str_seekoff): Call it if seek position is larger than current
	buffer.
	* libio/wstrops.c: Likewise.
	* libio/vasprintf.c: Add comment as to why we do not have to use
	calloc instead of malloc to allocate initial buffer.
	* libio/Makefile (tests): Add bug-memstream1 and bug-wmemstream1.
	* libio/bug-memstream1.c: New file.
	* libio/bug-wmemstream1.c: New file.
This commit is contained in:
Ulrich Drepper
2006-08-14 22:16:14 +00:00
parent 8999373483
commit 107b8a922a
9 changed files with 468 additions and 22 deletions
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2
libio/memstream.c
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@ -83,7 +83,7 @@ open_memstream (bufloc, sizeloc)
new_f->fp._sf._sbf._f._lock = &new_f->lock;
#endif
buf = malloc (_IO_BUFSIZ);
buf = calloc (1, _IO_BUFSIZ);
if (buf == NULL)
return NULL;
INTUSE(_IO_init) (&new_f->fp._sf._sbf._f, 0);