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-rw-r--r--generic/tclCmdMZ.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c
index ccf3bc6..27e4055 100644
--- a/generic/tclCmdMZ.c
+++ b/generic/tclCmdMZ.c
@@ -378,7 +378,7 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
while (1) {
match = Tcl_RegExpExecObj(interp, regExpr, objPtr,
offset /* offset */, numMatchesSaved, eflags
- | ((offset > 0 &&
+ | ((offset > 0 && offset < stringLength &&
(Tcl_GetUniChar(objPtr,offset-1) != (Tcl_UniChar)'\n'))
? TCL_REG_NOTBOL : 0));