negf: Fix -Wformat-truncation warningHEADmaster

math.c: In function ‘negf’:
math.c:474:36: warning: ‘snprintf’ output may be truncated before the last
 format character [-Wformat-truncation=]
  474 |     snprintf(tmp, sizeof(tmp), "-%s", dispstr);
      |                                    ^
math.c:474:5: note: ‘snprintf’ output between 2 and 33 bytes into a
 destination of size 32
  474 |     snprintf(tmp, sizeof(tmp), "-%s", dispstr);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/app/xcalc/-/merge_requests/13>

1 files changed, 1 insertions, 1 deletions

diff --git a/math.c b/math.c
index c51517c..2ea5400 100644
--- a/math.c
+++ b/math.c
@@ -470,7 +470,7 @@ negf(void)
   if (dispstr[0]=='-')	 	/* already neg-ed */
     strcpy(dispstr,dispstr+1);  /* move str left once */
   else {			/* not neg-ed.  add a '-' */
-    char tmp[32];
+    char tmp[LCD_STR_LEN + 1];
     snprintf(tmp, sizeof(tmp), "-%s", dispstr);
     strlcpy(dispstr, tmp, sizeof(dispstr));
   }