build: Check for compound literal storage-class support

This lets us use them on GCC >= 13, even before C23.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/diag.h b/src/diag.h
index 3bea9b2..7b3e8a5 100644
--- a/src/diag.h
+++ b/src/diag.h
@@ -27,7 +27,7 @@ struct bfs_loc {
 /**
  * Get the current source code location.
  */
-#if __STDC_VERSION__ >= C23
+#if BFS_HAS_COMPOUND_LITERAL_STORAGE
 #  define bfs_location() (&(static const struct bfs_loc)BFS_LOC_INIT)
 #else
 #  define bfs_location() (&(const struct bfs_loc)BFS_LOC_INIT)