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-rw-r--r--Src/utils.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/Src/utils.c b/Src/utils.c
index 2ea8ba991..0e7a7d2bb 100644
--- a/Src/utils.c
+++ b/Src/utils.c
@@ -1803,7 +1803,10 @@ zstrtol(const char *s, char **t, int base)
 	    base = 8;
     }
     inp = s;
-    if (base <= 10)
+    if (base > 36) {
+	zerr("invalid base: %d", base);
+	return (zlong)0;
+    } else if (base <= 10)
 	for (; *s >= '0' && *s < ('0' + base); s++) {
 	    if (trunc)
 		continue;