fix condition

diff --git a/main/fopen_wrappers.c b/main/fopen_wrappers.c
index 396b0c51a09ac7fd55163553cb28eaad04fc8cf2..d8a83304cdc7ebb4400dfdedd902acc3e5c5a113 100644 (file)
--- a/main/fopen_wrappers.c
+++ b/main/fopen_wrappers.c
@@ -586,7 +586,7 @@ PHPAPI zend_string *php_resolve_path(const char *filename, int filename_length,
                const char *exec_fname = exec_filename->val;
                size_t exec_fname_length = exec_filename->len;
 
-               while ((--exec_fname_length >= 0) && !IS_SLASH(exec_fname[exec_fname_length]));
+               while ((--exec_fname_length < SIZE_MAX) && !IS_SLASH(exec_fname[exec_fname_length]));
                if (exec_fname_length > 0 &&
                    exec_fname_length + 1 + filename_length + 1 < MAXPATHLEN) {
                        memcpy(trypath, exec_fname, exec_fname_length + 1);
@@ -664,7 +664,7 @@ PHPAPI FILE *php_fopen_with_path(const char *filename, const char *mode, const c
                const char *exec_fname = exec_filename->val;
                size_t exec_fname_length = exec_filename->len;
 
-               while ((--exec_fname_length >= 0) && !IS_SLASH(exec_fname[exec_fname_length]));
+               while ((--exec_fname_length < SIZE_MAX) && !IS_SLASH(exec_fname[exec_fname_length]));
                if ((exec_fname && exec_fname[0] == '[') || exec_fname_length <= 0) {
                        /* [no active file] or no path */
                        pathbuf = estrdup(path);