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-rw-r--r--Src/prompt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/prompt.c b/Src/prompt.c
index a593be68e..632383736 100644
--- a/Src/prompt.c
+++ b/Src/prompt.c
@@ -161,7 +161,7 @@ promptexpand(char *s, int ns, char *rs, char *Rs)
     rstring = rs;
     Rstring = Rs;
     fm = s;
-    bp = bufline = buf = zalloc(bufspc = 256);
+    bp = bufline = buf = zcalloc(bufspc = 256);
     bp1 = NULL;
     trunclen = 0;
     putpromptchar(1, '\0');