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-rw-r--r--src/libbio/bputrune.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libbio/bputrune.c b/src/libbio/bputrune.c
index a2eaa83e..651ae7b7 100644
--- a/src/libbio/bputrune.c
+++ b/src/libbio/bputrune.c
@@ -6,7 +6,7 @@ int
Bputrune(Biobuf *bp, long c)
{
Rune rune;
- char str[4];
+ char str[UTFmax];
int n;
rune = c;