- fix possible NULL deref

pierrejoye · pierrejoye · commit 26bb38e68ba1 · 2011-01-10T00:30:07.000Z
diff --git a/TSRM/tsrm_virtual_cwd.c b/TSRM/tsrm_virtual_cwd.c
@@ -1874,6 +1874,9 @@ CWD_API char *tsrm_realpath(const char *path, char *real_path TSRMLS_DC) /* {{{
 	/* realpath("") returns CWD */
 	if (!*path) {
 		new_state.cwd = (char*)malloc(1);
+		if (new_state.cwd == NULL) {
+			return NULL;
+		}
 		new_state.cwd[0] = '\0';
 		new_state.cwd_length = 0;
 		if (VCWD_GETCWD(cwd, MAXPATHLEN)) {
@@ -1885,6 +1888,9 @@ CWD_API char *tsrm_realpath(const char *path, char *real_path TSRMLS_DC) /* {{{
 		new_state.cwd_length = strlen(cwd);
 	} else {
 		new_state.cwd = (char*)malloc(1);
+		if (new_state.cwd == NULL) {
+			return NULL;
+		}
 		new_state.cwd[0] = '\0';
 		new_state.cwd_length = 0;
 	}
