linestack.c: fix buffer length.

GCC 8.2 (which my laptop appears to have been quietly upgraded to)
points out that the %04X of an int might actually take 8 characters;
between that, the "U+", and the trailing NUL, we're gonna need a
bigger boat...

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/linestack.c b/lib/linestack.c
index fb6cc1e4..0fc83e6b 100644
--- a/lib/linestack.c
+++ b/lib/linestack.c
@@ -125,7 +125,7 @@ int crunch_str(char **str, int width, FILE *out, char *escmore,
 // standard escapes: ^X if <32, <XX> if invalid UTF8, U+XXXX if UTF8 !iswprint()
 int crunch_escape(FILE *out, int cols, int wc)
 {
-  char buf[8];
+  char buf[11];
   int rc;
 
   if (wc<' ') rc = sprintf(buf, "^%c", '@'+wc);