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| | Index: bregexec.cpp
===================================================================
--- bregexec.cpp (revision 1112)
+++ bregexec.cpp (working copy)
@@ -77,7 +77,21 @@
#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>
+#if _MSC_VER > 1000
+#define __STR2__(x) #x
+#define __STR1__(x) __STR2__(x)
+#define __LOC__ __FILE__ "("__STR1__(__LINE__)") : warning MESSAGE: "
+#endif
#define KANJI
@@ -147,14 +161,21 @@
*/
/*
- - bregexec - match a regexp against a string
+ - bregexec_main - match a regexp against a string
+ renamed from bregexp
+
+ This function catch stack overflow exception
+ and rewind the stack area.
+ because regmatch() use recursive call,
+ stack area can run out.
*/
-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 +187,8 @@
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 */
@@ -191,7 +207,7 @@
}
////////// exception started
- try {
+ __try {
@@ -591,8 +607,7 @@
// Safefree(startpos);
delete [] startpos;
}
- if (savestack)
- delete [] savestack;
+ // 2007.06.23 savestack is moved to outer scope
return 1;
phooey:
@@ -600,33 +615,75 @@
// Safefree(startpos);
delete [] startpos;
- if (savestack)
- delete [] savestack;
+ // 2007.06.23 savestack is moved to outer scope
return 0;
} // error handler start
- catch (const char* err){
- strcpy(msg,err);
-
- if (savestack)
- delete [] savestack;
-
+#if _MSC_VER >= 1310
+ __except ( (GetExceptionCode() == EXCEPTION_STACK_OVERFLOW)?
+ EXCEPTION_EXECUTE_HANDLER: EXCEPTION_CONTINUE_SEARCH ){
+ _resetstkoflw(); // recovers from a stack overflow condition
+ strcpy(msg,"stack overflow");
return 0;
}
- catch (...){
- strcpy(msg,"fatal error");
-
- if (savestack)
- delete [] savestack;
-
+#else
+#if _MSC_VER > 1000
+#pragma message( __LOC__ "Stack overflow recovery will not work. The _resetstkoflw() function is declared in malloc.h for VC7.1 or lator." )
+#endif
+ __except ( EXCEPTION_CONTINUE_SEARCH ){
+ // We'll never get here.
return 0;
}
+#endif
}
+
+
+/*
+ bregexec : C++ exception wrapper for bregexec_main
+
+ @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 );
+ }
+ catch (const char* err){
+ strcpy(msg,err);
+ ret = 0;
+ }
+ catch (...){
+ strcpy(msg,"fatal error");
+ ret = 0;
+ }
+
+ // ensure
+ if (savestack)
+ delete [] savestack;
+ return ret;
+}
+
////////////////////////////////XXXXXXXXXXXXX
/*
- regmatch - main matching routine
Index: BREGEXP.rc
===================================================================
--- BREGEXP.rc (revision 1112)
+++ 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 1112)
+++ 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;
|