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-rw-r--r--Src/subst.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/subst.c b/Src/subst.c
index 314489e49..e8a181129 100644
--- a/Src/subst.c
+++ b/Src/subst.c
@@ -2848,7 +2848,7 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int ssub)
 	    char *check_offset = check_colon_subscript(s, &check_offset2);
 	    if (check_offset) {
 		zlong offset = mathevali(check_offset);
-		zlong length;
+		zlong length = 0;
 		int length_set = 0;
 		int offset_hack_argzero = 0;
 		if (errflag)