kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

zero-fill before GC mark

Browse source 
Depending on architectures, setjmp might not fully fill a jmp_buf.
On such machines the union can contain wobbly bits. They are then
scanned during mark_locations_array().  This is bad.
This commit is contained in:
Urabe, Shyouhei 2019-04-23 18:02:24 +09:00
parent 504ce460d2
commit 3ba485c0bf
1 changed files with 1 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
gc.c
View file

@ -4598,6 +4598,7 @@ mark_current_machine_context(rb_objspace_t *objspace, rb_execution_context_t *ec
VALUE *stack_start, *stack_end;
FLUSH_REGISTER_WINDOWS;
memset(&save_regs_gc_mark, 0, sizeof(save_regs_gc_mark));
/* This assumes that all registers are saved into the jmp_buf (and stack) */
rb_setjmp(save_regs_gc_mark.j);