1 files changed, 170 insertions, 0 deletions
diff --git a/generic/tclPanic.c b/generic/tclPanic.c
new file mode 100644
index 0000000..b03ad41
--- /dev/null
+++ b/generic/tclPanic.c
@@ -0,0 +1,170 @@
+/*
+ * 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.
+ *
+ * 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.
+ */
+
+#include "tclInt.h"
+#if defined(_WIN32) || defined(__CYGWIN__)
+    MODULE_SCOPE TCL_NORETURN void tclWinDebugPanic(const char *format, ...);
+#endif
+
+/*
+ * The panicProc variable contains a pointer to an application specific panic
+ * procedure.
+ */
+
+#if defined(__CYGWIN__)
+static TCL_NORETURN Tcl_PanicProc *panicProc = tclWinDebugPanic;
+#else
+static TCL_NORETURN1 Tcl_PanicProc *panicProc = NULL;
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetPanicProc --
+ *
+ *	Replace the default panic behavior with the specified function.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets the panicProc variable.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SetPanicProc(
+    TCL_NORETURN1 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;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_PanicVA --
+ *
+ *	Print an error message and kill the process.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The process dies, entering the debugger if possible.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_PanicVA(
+    const char *format,		/* Format string, suitable for passing to
+				 * fprintf. */
+    va_list argList)		/* Variable argument list. */
+{
+    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 *);
+    arg3 = va_arg(argList, char *);
+    arg4 = va_arg(argList, char *);
+    arg5 = va_arg(argList, char *);
+    arg6 = va_arg(argList, char *);
+    arg7 = va_arg(argList, char *);
+    arg8 = va_arg(argList, char *);
+
+    if (panicProc != NULL) {
+	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 {
+	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) && defined (_M_IX86)
+	_asm {int 3}
+#   else
+	DebugBreak();
+#   endif
+#endif
+#if defined(_WIN32)
+	ExitProcess(1);
+#else
+	abort();
+#endif
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_Panic --
+ *
+ *	Print an error message and kill the process.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The process dies, entering the debugger if possible.
+ *
+ *----------------------------------------------------------------------
+ */
+
+/* ARGSUSED */
+
+/*
+ * The following comment is here so that Coverity's static analizer knows that
+ * a Tcl_Panic() call can never return and avoids lots of false positives.
+ */
+
+/* coverity[+kill] */
+void
+Tcl_Panic(
+    const char *format,
+    ...)
+{
+    va_list argList;
+
+    va_start(argList, format);
+    Tcl_PanicVA(format, argList);
+    va_end (argList);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */