Fix bug 54866

Author: rlerdorf

TSRM/tsrm_virtual_cwd.c

@@ -617,7 +617,13 @@ CWD_API void realpath_cache_del(const char *path, int path_len TSRMLS_DC) /* {{{
 					memcmp(path, (*bucket)->path, path_len) == 0) {
 			realpath_cache_bucket *r = *bucket;
 			*bucket = (*bucket)->next;
-			CWDG(realpath_cache_size) -= sizeof(realpath_cache_bucket) + r->path_len + 1 + r->realpath_len + 1;
+		   
+			/* if the pointers match then only subtract the length of the path */
+		   	if(r->path == r->realpath) 
+                            CWDG(realpath_cache_size) -= sizeof(realpath_cache_bucket) + r->path_len + 1;
+                        else
+                            CWDG(realpath_cache_size) -= sizeof(realpath_cache_bucket) + r->path_len + 1 + r->realpath_len + 1;
+		   
 			free(r);
 			return;
 		} else {
@@ -692,7 +698,13 @@ static inline realpath_cache_bucket* realpath_cache_find(const char *path, int p
 		if (CWDG(realpath_cache_ttl) && (*bucket)->expires < t) {
 			realpath_cache_bucket *r = *bucket;
 			*bucket = (*bucket)->next;
-			CWDG(realpath_cache_size) -= sizeof(realpath_cache_bucket) + r->path_len + 1 + r->realpath_len + 1;
+
+			/* if the pointers match then only subtract the length of the path */		   
+		   	if(r->path == r->realpath) 
+                            CWDG(realpath_cache_size) -= sizeof(realpath_cache_bucket) + r->path_len + 1;
+                        else
+                            CWDG(realpath_cache_size) -= sizeof(realpath_cache_bucket) + r->path_len + 1 + r->realpath_len + 1;
+		   
 			free(r);
 		} else if (key == (*bucket)->key && path_len == (*bucket)->path_len &&
 					memcmp(path, (*bucket)->path, path_len) == 0) {