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Relay tracing would crash if it came upon a function call with an 

invalid pointer as a parameter.
This commit is contained in:
Johan Gill 2001-10-17 19:39:22 +00:00 committed by Alexandre Julliard
parent d7d564b227
commit 42a074dfcd
1 changed files with 76 additions and 22 deletions
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98
dlls/ntdll/debugtools.c
View File

@ -10,6 +10,7 @@
#include <ctype.h>
#include "debugtools.h"
#include "wine/exception.h"
#include "thread.h"
#include "winbase.h"
#include "winnt.h"
@ -29,6 +30,14 @@ struct debug_info
static struct debug_info tmp;
/* filter for page-fault exceptions */
static WINE_EXCEPTION_FILTER(page_fault)
{
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
return EXCEPTION_EXECUTE_HANDLER;
return EXCEPTION_CONTINUE_SEARCH;
}
/* get the debug info pointer for the current thread */
static inline struct debug_info *get_info(void)
{
@ -69,20 +78,11 @@ static inline void release( void *ptr )
info->str_pos = ptr;
}
/***********************************************************************
* wine_dbgstr_an (NTDLL.@)
*/
const char *wine_dbgstr_an( const char *src, int n )
/* put an ASCII string into the debug buffer */
inline static char *put_string_a( const char *src, int n )
{
char *dst, *res;
if (!HIWORD(src))
{
if (!src) return "(null)";
res = gimme1(6);
sprintf(res, "#%04x", LOWORD(src) );
return res;
}
if (n < 0) n = 0;
else if (n > 200) n = 200;
dst = res = gimme1 (n * 4 + 6);
@ -121,20 +121,11 @@ const char *wine_dbgstr_an( const char *src, int n )
return res;
}
/***********************************************************************
* wine_dbgstr_wn (NTDLL.@)
*/
const char *wine_dbgstr_wn( const WCHAR *src, int n )
/* put a Unicode string into the debug buffer */
inline static char *put_string_w( const WCHAR *src, int n )
{
char *dst, *res;
if (!HIWORD(src))
{
if (!src) return "(null)";
res = gimme1(6);
sprintf(res, "#%04x", LOWORD(src) );
return res;
}
if (n < 0) n = 0;
else if (n > 200) n = 200;
dst = res = gimme1 (n * 5 + 7);
@ -173,6 +164,69 @@ const char *wine_dbgstr_wn( const WCHAR *src, int n )
return res;
}
/***********************************************************************
* wine_dbgstr_an (NTDLL.@)
*/
const char *wine_dbgstr_an( const char *src, int n )
{
char *res, *old_pos;
struct debug_info *info;
if (!HIWORD(src))
{
if (!src) return "(null)";
res = gimme1(6);
sprintf(res, "#%04x", LOWORD(src) );
return res;
}
/* save current position to restore it on exception */
info = NtCurrentTeb()->debug_info;
old_pos = info->str_pos;
__TRY
{
res = put_string_a( src, n );
}
__EXCEPT(page_fault)
{
release( old_pos );
return "(invalid)";
}
__ENDTRY
return res;
}
/***********************************************************************
* wine_dbgstr_wn (NTDLL.@)
*/
const char *wine_dbgstr_wn( const WCHAR *src, int n )
{
char *res, *old_pos;
struct debug_info *info;
if (!HIWORD(src))
{
if (!src) return "(null)";
res = gimme1(6);
sprintf(res, "#%04x", LOWORD(src) );
return res;
}
/* save current position to restore it on exception */
info = NtCurrentTeb()->debug_info;
old_pos = info->str_pos;
__TRY
{
res = put_string_w( src, n );
}
__EXCEPT(page_fault)
{
release( old_pos );
return "(invalid)";
}
__ENDTRY
return res;
}
/***********************************************************************
* wine_dbgstr_guid (NTDLL.@)
*/