alloc: Implement an arena for flexible structs

1 files changed, 13 insertions, 1 deletions

diff --git a/tests/alloc.c b/tests/alloc.c
index 91b1b43..9e6e892 100644
--- a/tests/alloc.c
+++ b/tests/alloc.c
@@ -8,7 +8,7 @@
 int main(void) {
 	// Check sizeof_flex()
 	struct flexible {
-		alignas(64) int foo;
+		alignas(64) int foo[8];
 		int bar[];
 	};
 	bfs_verify(sizeof_flex(struct flexible, bar, 0) >= sizeof(struct flexible));
@@ -20,5 +20,17 @@ int main(void) {
 	// Doesn't happen in typical ABIs
 	bfs_verify(flex_size(8, 16, 4, 4, 1) == 16);
 
+	// varena tests
+	struct varena varena;
+	VARENA_INIT(&varena, struct flexible, bar);
+
+	for (size_t i = 0; i < 256; ++i) {
+		bfs_verify(varena_alloc(&varena, i));
+		struct arena *arena = &varena.arenas[varena.narenas - 1];
+		bfs_verify(arena->size >= sizeof_flex(struct flexible, bar, i));
+	}
+
+	varena_destroy(&varena);
+
 	return EXIT_SUCCESS;
 }