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-rw-r--r--src/basic/path-util.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/src/basic/path-util.h b/src/basic/path-util.h
index 86c5a577cb..af4878b325 100644
--- a/src/basic/path-util.h
+++ b/src/basic/path-util.h
@@ -116,10 +116,8 @@ int mkfs_exists(const char *fstype);
_slash && ((*_slash = 0), true); \
_slash = strrchr((prefix), '/'))
-char *prefix_root(const char *root, const char *path);
-
-/* Similar to prefix_root(), but returns an alloca() buffer, or
- * possibly a const pointer into the path parameter */
+/* Similar to path_join(), but only works for two components, and only the first one may be NULL and returns
+ * an alloca() buffer, or possibly a const pointer into the path parameter */
#define prefix_roota(root, path) \
({ \
const char* _path = (path), *_root = (root), *_ret; \