From 107b8a922a9f72bae8d066549c675062bee0897f Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 14 Aug 2006 22:16:14 +0000 Subject: [BZ #1996] 2006-08-14 Ulrich Drepper [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. --- libio/vasprintf.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'libio/vasprintf.c') diff --git a/libio/vasprintf.c b/libio/vasprintf.c index ac77330..2fdb9f6 100644 --- a/libio/vasprintf.c +++ b/libio/vasprintf.c @@ -46,6 +46,8 @@ _IO_vasprintf (result_ptr, format, args) int ret; _IO_size_t needed; _IO_size_t allocated; + /* No need to clear the memory here (unlike for open_memstream) since + we know we will never seek on the stream. */ string = (char *) malloc (init_string_size); if (string == NULL) return -1; -- cgit v1.1