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-rw-r--r--generic/tclTest.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclTest.c b/generic/tclTest.c
index 835036b..27ee89c 100644
--- a/generic/tclTest.c
+++ b/generic/tclTest.c
@@ -1856,7 +1856,7 @@ TestdstringCmd(
if (Tcl_GetInt(interp, argv[2], &count) != TCL_OK) {
return TCL_ERROR;
}
- Tcl_DStringTrunc(&dstring, count);
+ Tcl_DStringSetLength(&dstring, count);
} else if (strcmp(argv[1], "start") == 0) {
if (argc != 2) {
goto wrongNumArgs;