Fix shape allocation limits

We can only allocate enough shapes to fit in the shape buffer.
MAX_SHAPE_ID was based on the theoretical maximum number of shapes we
could have, not on the amount of memory we can actually consume.  This
commit changes the MAX_SHAPE_ID to be based on the amount of memory
we're allowed to consume.

Co-Authored-By: Jemma Issroff <jemmaissroff@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/shape.c b/shape.c
index e264e7bee5..cf1a4426eb 100644
--- a/shape.c
+++ b/shape.c
@@ -145,6 +145,7 @@ get_next_shape_internal(rb_shape_t * shape, ID id, enum shape_type shape_type, b
 
                 new_shape->type = (uint8_t)shape_type;
                 new_shape->capacity = shape->capacity;
+                new_shape->edges = NULL;
 
                 switch (shape_type) {
                   case SHAPE_IVAR: