merge work/exactsize: exact-size heap bounds

1 files changed, 4 insertions, 3 deletions

diff --git a/tests/programs/bounds_heap.zc b/tests/programs/bounds_heap.zc
index d0bd318..719757e 100644
--- a/tests/programs/bounds_heap.zc
+++ b/tests/programs/bounds_heap.zc
@@ -1,12 +1,13 @@
 namespace;
 include rt;
 
-// a pointer to the start of a live heap block is checked against the block's
-// payload, which a buddy block rounds up: rt.new(4) holds 11 words. a pointer
+// a pointer to the start of a live heap block is checked against exactly the
+// words new asked for: rt.new(11) holds 11 words (its block holds 11 too, but
+// rt.new(4) would hold 4, not the 11 its 16-word block has room for). a pointer
 // into the middle of a block, or to memory that is not a heap block, is not
 // checked. a char is a word, so a char* counts words.
 int main() {
-	int* p = rt.new(4); int* q; char* c = rt.new(2); int i = 10;
+	int* p = rt.new(11); int* q; char* c = rt.new(3); int i = 10;
 	p[i] = 3; rt.put_n(p[i]); rt.put_c(10);
 	q = p + 1; i = 10; rt.put_n(q[i - 1] - 3); rt.put_c(10);
 	i = 2; c[i] = 'x'; rt.put_c(c[i]); rt.put_c(10);