diff options
| author |   millert <millert@openbsd.org> | 1998-02-02 22:44:53 +0000 |
|---|---|---|
| committer | millert <millert@openbsd.org> | 1998-02-02 22:44:53 +0000 |
| commit | 48d1b8ab4f15c2999c8d3cbee4bc957299486e7b (patch) | |
| tree | e95aabf49aa6be0c5a47748045caafcd48a3c168 /lib/libc/stdlib/setenv.c | |
| parent | support non-ISA case (diff) | |
| download | wireguard-openbsd-48d1b8ab4f15c2999c8d3cbee4bc957299486e7b.tar.xz wireguard-openbsd-48d1b8ab4f15c2999c8d3cbee4bc957299486e7b.zip | |
Don't override environ if realloc() fails. Pointed out by
Dave Bodenstab <imdave@mcs.net>
Diffstat (limited to 'lib/libc/stdlib/setenv.c')
| -rw-r--r-- | lib/libc/stdlib/setenv.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/libc/stdlib/setenv.c b/lib/libc/stdlib/setenv.c index 8838eb87809..b6f261e61cf 100644 --- a/lib/libc/stdlib/setenv.c +++ b/lib/libc/stdlib/setenv.c @@ -32,7 +32,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static char *rcsid = "$OpenBSD: setenv.c,v 1.2 1996/08/19 08:33:48 tholo Exp $"; +static char *rcsid = "$OpenBSD: setenv.c,v 1.3 1998/02/02 22:44:53 millert Exp $"; #endif /* LIBC_SCCS and not lint */ #include <stdlib.h> @@ -71,10 +71,11 @@ setenv(name, value, rewrite) for (P = environ, cnt = 0; *P; ++P, ++cnt); if (alloced) { /* just increase size */ - environ = (char **)realloc((char *)environ, + P = (char **)realloc((void *)environ, (size_t)(sizeof(char *) * (cnt + 2))); - if (!environ) + if (!P) return (-1); + environ = P; } else { /* get new space */ alloced = 1; /* copy old entries into it */ |