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authordkf <donal.k.fellows@manchester.ac.uk>2013-01-04 14:38:37 (GMT)
committerdkf <donal.k.fellows@manchester.ac.uk>2013-01-04 14:38:37 (GMT)
commit18d9d66f4d3a6a8b468474e25d5bacee500bda85 (patch)
tree709b0fa2e8d57aef2948a721b619752b157d6a4b /generic/tclCompCmdsSZ.c
parent09d1473b3be04898d6ec67abcad0b980fdd88df6 (diff)
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Fix bad memory access problems found by Miguel Sofer when valgrinding.
Diffstat (limited to 'generic/tclCompCmdsSZ.c')
-rw-r--r--generic/tclCompCmdsSZ.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index 7bead0d..1d04d8b 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -2737,7 +2737,7 @@ TclCompileUnsetCmd(
flags = 1;
varTokenPtr = TokenAfter(parsePtr->tokenPtr);
leadingWord = Tcl_NewObj();
- if (TclWordKnownAtCompileTime(varTokenPtr, leadingWord)) {
+ if (numWords > 0 && TclWordKnownAtCompileTime(varTokenPtr, leadingWord)) {
int len;
const char *bytes = Tcl_GetStringFromObj(leadingWord, &len);