harec

commit d5aee16e85da40db7f427cb8358697cf9f93236d
parent c2ce6392f471292486baa50e0e632226f716f990
Author: Drew DeVault <sir@cmpwn.com>
Date:   Wed, 28 Apr 2021 13:16:45 -0400

Fix slice capacity with undefined length array

Signed-off-by: Drew DeVault <sir@cmpwn.com>

Diffstat:
M
src/gen.c
 | 
11
++++++-----

1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/src/gen.c b/src/gen.c
@@ -2569,11 +2569,12 @@ gen_expr_slice(struct gen_context *ctx,
 
 		pushc(ctx->current, "store capacity");
 		pushi(ctx->current, &dest, Q_ADD, &dest, &temp, NULL);
-		// XXX: Does this assert need to be enforced higher up the
-		// stack?
-		assert(otype->array.length != SIZE_UNDEFINED);
-		constl(&temp, otype->array.length);
-		pushi(ctx->current, &offset, Q_SUB, &temp, &offset, NULL);
+
+		if (otype->array.length != SIZE_UNDEFINED) {
+			constl(&temp, otype->array.length);
+			pushi(ctx->current, &offset, Q_SUB, &temp, &offset, NULL);
+			pushi(ctx->current, NULL, Q_STOREL, &offset, &dest, NULL);
+		}
 		pushi(ctx->current, NULL, Q_STOREL, &offset, &dest, NULL);
 	}
 }