diff options
| -rw-r--r-- | debug/realpath_chk.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/debug/realpath_chk.c b/debug/realpath_chk.c index adfc092..8e734b5 100644 --- a/debug/realpath_chk.c +++ b/debug/realpath_chk.c @@ -19,6 +19,7 @@ #include <stdlib.h> #include <string.h> #include <unistd.h> +#include <errno.h> char * @@ -30,7 +31,15 @@ __realpath_chk (const char *buf, char *resolved, size_t resolvedlen) return __realpath (buf, resolved); #else - long int pathmax =__pathconf (buf, _PC_PATH_MAX); + long int pathmax; + + if (buf == NULL) + { + __set_errno (EINVAL); + return NULL; + } + + pathmax = __pathconf (buf, _PC_PATH_MAX); if (pathmax != -1) { /* We do have a fixed limit. */ |