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-rw-r--r--Src/subst.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/subst.c b/Src/subst.c
index 2113123ef..492778400 100644
--- a/Src/subst.c
+++ b/Src/subst.c
@@ -1994,7 +1994,7 @@ static char *
 arithsubst(char *a, char **bptr, char *rest)
 {
     char *s = *bptr, *t;
-    char buf[DIGBUFSIZE], *b = buf;
+    char buf[BDIGBUFSIZE], *b = buf;
     mnumber v;
 
     singsub(&a);