fixed bug with trimming string with all space characters

2019-09-01 16:21:11 -04:00
parent e1038bc376
commit 5120609e6e
1 changed files with 1 additions and 1 deletions
--- a/mpc.c
+++ b/mpc.c
@@ -2470,7 +2470,7 @@ mpc_val_t *mpcf_strtriml(mpc_val_t *x) {
 mpc_val_t *mpcf_strtrimr(mpc_val_t *x) {
  char *s = x;
  size_t l = strlen(s);
-  while (isspace((unsigned char)s[l-1])) {
+  while (l > 0 && isspace((unsigned char)s[l-1])) {
    s[l-1] = '\0'; l--;
  }
  return s;