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Assert on output buffer overflow.

oldstable
Chris Morgan 2001-02-16 19:52:50 +00:00 committed by Alexandre Julliard
parent 7fdceb2217
commit 508c4d9354
1 changed files with 11 additions and 2 deletions
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13
dlls/ntdll/debugtools.c
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@ -2,6 +2,7 @@
* Debugging functions
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -198,9 +199,17 @@ const char *wine_dbgstr_guid( const GUID *id )
int wine_dbg_vprintf( const char *format, va_list args )
{
struct debug_info *info = get_info();
char *p;
int ret = vsprintf( info->out_pos, format, args );
char *p = strrchr( info->out_pos, '\n' );
int ret = vsnprintf( info->out_pos, sizeof(info->output) - (info->out_pos - info->output),
format, args );
/* make sure we didn't exceed the buffer length
* the two asserts are due to glibc changes in vsnprintfs return value */
assert( ret != -1 );
assert( ret < sizeof(info->output) - (info->out_pos - info->output) );
p = strrchr( info->out_pos, '\n' );
if (!p) info->out_pos += ret;
else
{