made safer

1988-08-30 12:52:09 +00:00 · 1988-08-30 12:52:09 +00:00 · ac92c0b9c3
commit ac92c0b9c3
parent d24592ee76
1 changed files with 1 additions and 0 deletions
--- a/lang/cem/libcc/gen/getenv.c
+++ b/lang/cem/libcc/gen/getenv.c
@ -5,6 +5,7 @@ register char *name;
  extern char **environ;
  register char **v = environ, *p, *q;

+  if (v == 0 || name == 0) return 0;
  while ((p = *v++) != 0) {
 	q = name;
 	while (*q && *q++ == *p++) /* nothing */ ;