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-rw-r--r--lib/command.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/command.c b/lib/command.c
index e92251160..099563721 100644
--- a/lib/command.c
+++ b/lib/command.c
@@ -735,9 +735,13 @@ char *cmd_variable_comp2str(vector comps, unsigned short cols)
char *item = vector_slot(comps, j);
itemlen = strlen(item);
- if (cs + itemlen + AUTOCOMP_INDENT + 3 >= bsz)
- buf = XREALLOC(MTYPE_TMP, buf, (bsz *= 2));
+ size_t next_sz = cs + itemlen + AUTOCOMP_INDENT + 3;
+ if (next_sz > bsz) {
+ /* Make sure the buf size is large enough */
+ bsz = next_sz;
+ buf = XREALLOC(MTYPE_TMP, buf, bsz);
+ }
if (lc + itemlen + 1 >= cols) {
cs += snprintf(&buf[cs], bsz - cs, "\n%*s",
AUTOCOMP_INDENT, "");