1 files changed, 70 insertions, 42 deletions

diff --git a/generic/tclPanic.c b/generic/tclPanic.c
index e20d0e4..2a453b9 100644
--- a/generic/tclPanic.c
+++ b/generic/tclPanic.c
@@ -1,44 +1,40 @@
-/* 
+/*
  * tclPanic.c --
  *
- *	Source code for the "Tcl_Panic" library procedure for Tcl;
- *	individual applications will probably call Tcl_SetPanicProc()
- *	to set an application-specific panic procedure.
+ *	Source code for the "Tcl_Panic" library procedure for Tcl; individual
+ *	applications will probably call Tcl_SetPanicProc() to set an
+ *	application-specific panic procedure.
  *
  * Copyright (c) 1988-1993 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tclPanic.c,v 1.5 2004/04/06 22:25:54 dgp Exp $
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
+#if defined(_WIN32) || defined(__CYGWIN__)
+    MODULE_SCOPE void tclWinDebugPanic(const char *format, ...);
+#endif
 
 /*
- * The panicProc variable contains a pointer to an application
- * specific panic procedure.
+ * The panicProc variable contains a pointer to an application specific panic
+ * procedure.
  */
 
+#if defined(__CYGWIN__)
+static Tcl_PanicProc *panicProc = tclWinDebugPanic;
+#else
 static Tcl_PanicProc *panicProc = NULL;
-
-/*
- * The platformPanicProc variable contains a pointer to a platform
- * specific panic procedure, if any.  ( TclpPanic may be NULL via
- * a macro. )
- */
-
-static Tcl_PanicProc * CONST platformPanicProc = TclpPanic;
-
+#endif
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_SetPanicProc --
  *
- *	Replace the default panic behavior with the specified functiion.
+ *	Replace the default panic behavior with the specified function.
  *
  * Results:
  *	None.
@@ -50,9 +46,17 @@ static Tcl_PanicProc * CONST platformPanicProc = TclpPanic;
  */
 
 void
-Tcl_SetPanicProc(proc)
-    Tcl_PanicProc *proc;
+Tcl_SetPanicProc(
+    Tcl_PanicProc *proc)
 {
+#if defined(_WIN32)
+    /* tclWinDebugPanic only installs if there is no panicProc yet. */
+    if ((proc != tclWinDebugPanic) || (panicProc == NULL))
+#elif defined(__CYGWIN__)
+    if (proc == NULL)
+	panicProc = tclWinDebugPanic;
+    else
+#endif
     panicProc = proc;
 }
 
@@ -73,14 +77,14 @@ Tcl_SetPanicProc(proc)
  */
 
 void
-Tcl_PanicVA (format, argList)
-    CONST char *format;		/* Format string, suitable for passing to
+Tcl_PanicVA(
+    const char *format,		/* Format string, suitable for passing to
 				 * fprintf. */
-    va_list argList;		/* Variable argument list. */
+    va_list argList)		/* Variable argument list. */
 {
-    char *arg1, *arg2, *arg3, *arg4;	/* Additional arguments (variable in
-					 * number) to pass to fprintf. */
-    char *arg5, *arg6, *arg7, *arg8;
+    char *arg1, *arg2, *arg3;	/* Additional arguments (variable in number)
+				 * to pass to fprintf. */
+    char *arg4, *arg5, *arg6, *arg7, *arg8;
 
     arg1 = va_arg(argList, char *);
     arg2 = va_arg(argList, char *);
@@ -90,19 +94,34 @@ Tcl_PanicVA (format, argList)
     arg6 = va_arg(argList, char *);
     arg7 = va_arg(argList, char *);
     arg8 = va_arg(argList, char *);
-    
+
     if (panicProc != NULL) {
-	(void) (*panicProc)(format, arg1, arg2, arg3, arg4,
-		arg5, arg6, arg7, arg8);
-    } else if (platformPanicProc != NULL) {
-	(void) (*platformPanicProc)(format, arg1, arg2, arg3, arg4,
-		arg5, arg6, arg7, arg8);
+	panicProc(format, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8);
+#ifdef _WIN32
+    } else if (IsDebuggerPresent()) {
+	tclWinDebugPanic(format, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8);
+#endif
     } else {
-	(void) fprintf(stderr, format, arg1, arg2, arg3, arg4, arg5, arg6,
-		arg7, arg8);
-	(void) fprintf(stderr, "\n");
-	(void) fflush(stderr);
+	fprintf(stderr, format, arg1, arg2, arg3, arg4, arg5, arg6, arg7,
+		arg8);
+	fprintf(stderr, "\n");
+	fflush(stderr);
+#if defined(_WIN32) || defined(__CYGWIN__)
+#   if defined(__GNUC__)
+	__builtin_trap();
+#   elif defined(_WIN64)
+	__debugbreak();
+#   elif defined(_MSC_VER)
+	_asm {int 3}
+#   else
+	DebugBreak();
+#   endif
+#endif
+#if defined(_WIN32)
+	ExitProcess(1);
+#else
 	abort();
+#endif
     }
 }
 
@@ -122,14 +141,23 @@ Tcl_PanicVA (format, argList)
  *----------------------------------------------------------------------
  */
 
-	/* VARARGS ARGSUSED */
+	/* ARGSUSED */
 void
-Tcl_Panic TCL_VARARGS_DEF(CONST char *,arg1)
+Tcl_Panic(
+    const char *format,
+    ...)
 {
     va_list argList;
-    CONST char *format;
 
-    format = TCL_VARARGS_START(CONST char *,arg1,argList);
+    va_start(argList, format);
     Tcl_PanicVA(format, argList);
     va_end (argList);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */