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-rw-r--r--Src/prompt.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/Src/prompt.c b/Src/prompt.c
index ee77c8bc8..29e006e0e 100644
--- a/Src/prompt.c
+++ b/Src/prompt.c
@@ -920,6 +920,7 @@ addbufspc(int need)
 	if(need & 255)
 	    need = (need | 255) + 1;
 	bv->buf = realloc(bv->buf, bv->bufspc += need);
+	memset(bv->buf + bv->bufspc - need, 0, need);
 	bv->bp = bv->buf + bo;
 	if(bo1 != -1)
 	    bv->bp1 = bv->buf + bo1;