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| | Index: bregexec.cpp
===================================================================
--- bregexec.cpp (revision 1102)
+++ bregexec.cpp (working copy)
@@ -77,8 +77,16 @@
#include <string.h>
#include <ctype.h>
+// From Here
+/*
+ 2007.06.23 genta : SEH support
+ These inclusion must be before "sv.h" because
+ "sv.h" include definition of BOOL that conflicts
+ typdef in "windows.h"
+*/
+#include <windows.h>
+#include <malloc.h>
-
#define KANJI
@@ -87,7 +95,6 @@
-
#include "global.h"
//#include "handy.h" in perl.h
#include "sv.h"
@@ -104,6 +111,8 @@
static int regrepeat(char *p, int max,GLOBAL*);
+// 2007.06.23 genta : SEH support
+DWORD SEHFilter(DWORD code, LPEXCEPTION_POINTERS pInfo);
@@ -147,14 +156,16 @@
*/
/*
- - bregexec - match a regexp against a string
+ - bregexec_main - match a regexp against a string
+ renamed from bregexp
*/
-BOOL bregexec(register regexp *prog,char *stringarg,
+static BOOL bregexec_main(register regexp *prog,char *stringarg,
register char *strend, /* pointer to null at end of string */
char *strbeg, /* real beginning of string */
int minend, /* end of match must be at least minend after stringarg */
int safebase, /* no need to remember string in subbase */
-char *msg) /* fatal error message */
+char *msg, /* fatal error message */
+GLOBAL *globalp)/* global workarea */
{
register char *s;
register int i;
@@ -166,13 +177,8 @@
if (startpos == strend) // length 0 bye bye
return 0;
+ // initialization of global has been moved.
-
- GLOBAL global;
- GLOBAL *globalp;
- globalp = &global;
- memset((void*)globalp,0,sizeof(GLOBAL));
-
multiline = prog->pmflags & PMf_MULTILINE;
kanji_mode_flag = prog->pmflags & PMf_KANJI; // using KANJI_MODE macro
int minlen = 0; /* must match at least this many chars */
@@ -591,8 +597,7 @@
// Safefree(startpos);
delete [] startpos;
}
- if (savestack)
- delete [] savestack;
+ // 2007.06.23 savestack is moved to outer scope
return 1;
phooey:
@@ -600,8 +605,7 @@
// Safefree(startpos);
delete [] startpos;
- if (savestack)
- delete [] savestack;
+ // 2007.06.23 savestack is moved to outer scope
return 0;
@@ -609,16 +613,14 @@
catch (const char* err){
strcpy(msg,err);
- if (savestack)
- delete [] savestack;
+ // 2007.06.23 savestack is moved to outer scope
return 0;
}
catch (...){
strcpy(msg,"fatal error");
- if (savestack)
- delete [] savestack;
+ // 2007.06.23 savestack is moved to outer scope
return 0;
}
@@ -627,6 +629,52 @@
}
+
+
+/*
+ bregexec : SEH wrapper for bregexec_main
+ because regmatch() use recursive call,
+ stack area can run out.
+
+ This function catch stack overflow exception
+ and rewind the stack area.
+
+ @author genta
+ @date 2007.06.23 created
+ */
+BOOL bregexec(register regexp *prog,char *stringarg,
+register char *strend, /* pointer to null at end of string */
+char *strbeg, /* real beginning of string */
+int minend, /* end of match must be at least minend after stringarg */
+int safebase, /* no need to remember string in subbase */
+char *msg) /* fatal error message */
+{
+ BOOL ret;
+ GLOBAL global_body;
+ memset((void*)&global_body,0,sizeof(global_body));
+
+ GLOBAL *globalp = &global_body;
+
+ __try {
+ /* memory management is moved from bregexec_main()
+ to ensure memory release even in case of stack overflow
+ */
+ ret = bregexec_main( prog, stringarg, strend, strbeg,
+ minend, safebase, msg, &global_body );
+ }
+ __except (SEHFilter(GetExceptionCode(), GetExceptionInformation()) ){
+
+ _resetstkoflw();
+ strcpy(msg,"stack overflow");
+ ret = 0;
+ }
+
+ // ensure
+ if (savestack)
+ delete [] savestack;
+ return ret;
+}
+
////////////////////////////////XXXXXXXXXXXXX
/*
- regmatch - main matching routine
@@ -1383,3 +1431,24 @@
}
savestack = (union any*)buf;
}
+
+/*!
+ @brief Windows exception handling filter
+
+*/
+DWORD SEHFilter(DWORD code, LPEXCEPTION_POINTERS pInfo)
+{
+#if 0
+ if( EXCEPTION_NONCONTINUABLE == pInfo->ExceptionRecord->ExceptionFlags ){
+ OutputDebugString( "NOT CONTINUABLE\n" );
+ }
+ else {
+ OutputDebugString( "CONTINUABLE\n" );
+ }
+#endif
+ if( EXCEPTION_STACK_OVERFLOW == code ){
+// OutputDebugString( "Stack Overflow !!! Exception handled\n" );
+ return EXCEPTION_EXECUTE_HANDLER;
+ }
+ return EXCEPTION_CONTINUE_SEARCH;
+}
Index: BREGEXP.rc
===================================================================
--- BREGEXP.rc (revision 1102)
+++ BREGEXP.rc (working copy)
@@ -7,7 +7,8 @@
//
// Generated from the TEXTINCLUDE 2 resource.
//
-#include "afxres.h"
+//#include "afxres.h"
+#include "windows.h"
/////////////////////////////////////////////////////////////////////////////
#undef APSTUDIO_READONLY_SYMBOLS
@@ -28,7 +29,7 @@
//
VS_VERSION_INFO VERSIONINFO
- FILEVERSION 2,0,4,291
+ FILEVERSION 2,0,4,292
PRODUCTVERSION 2,0,4,29
FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
@@ -47,7 +48,7 @@
VALUE "Comments", "Regular Expression Engine for SAKURA\0"
VALUE "CompanyName", "Tatsuo Baba\0"
VALUE "FileDescription", "BREGEXP\0"
- VALUE "FileVersion", "2, 0, 4, 291\0"
+ VALUE "FileVersion", "2, 0, 4, 292\0"
VALUE "InternalName", "BREGEXP\0"
VALUE "LegalCopyright", "Copyright (C) 1999-2000 Tatsuo Baba\0"
VALUE "LegalTrademarks", "\0"
Index: main.cpp
===================================================================
--- main.cpp (revision 1102)
+++ main.cpp (working copy)
@@ -28,7 +28,7 @@
{
// 2003.11.01 Karoto : Change version info
// 2006.07.14 genta : Change version info
- static char version[] = "Bregexp.dll V1.02 for SAKURA "
+ static char version[] = "Bregexp.dll No stack overflow "
__DATE__;
return version;
@@ -385,3 +385,4 @@
delete [] r->endp;
delete [] r;
}
+
|