+++ /dev/null
-https://bugs.gentoo.org/561780
-https://github.com/ruby/ruby/pull/1625
-
-fix crash on register stack mark/sweep pass
-
-The crash looks like
-
- Program received signal SIGSEGV, Segmentation fault.
- mark_locations_array (objspace=0x6000000000045db0, x=0x0, n=864692227966763116) at gc.c:3297
- 3297 v = *x;
- (gdb) bt
- #0 mark_locations_array (objspace=0x6000000000045db0, x=0x0, n=864692227966763116) at gc.c:3297
- #1 0x400000000014a040 in gc_mark_locations (objspace=0x6000000000045db0, start=0x0, end=0x6000080000000368) at gc.c:3310
- #2 0x400000000014b3a0 in mark_current_machine_context (objspace=0x6000000000045db0, th=0x60000000000455b0) at gc.c:3500
- #3 0x400000000014dfe0 in gc_mark_roots (objspace=0x6000000000045db0, full_mark=0, categoryp=0x0) at gc.c:4105
- #4 0x400000000014e6b0 in gc_marks_body (objspace=0x6000000000045db0, full_mark=0) at gc.c:4164
- #5 0x400000000014f260 in gc_marks (objspace=0x6000000000045db0, full_mark=0) at gc.c:4526
- #6 0x40000000001525c0 in garbage_collect_body (objspace=0x6000000000045db0, full_mark=0, immediate_sweep=0, reason=256) at gc.c:5024
- #7 0x400000000013c010 in heap_prepare_freepage (objspace=0x6000000000045db0, heap=0x6000000000045dc0) at gc.c:1219
- #8 0x400000000013c140 in heap_get_freeobj_from_next_freepage (objspace=0x6000000000045db0, heap=0x6000000000045dc0) at gc.c:1237
- #9 0x400000000013c360 in heap_get_freeobj (objspace=0x6000000000045db0, heap=0x6000000000045dc0) at gc.c:1259
- #10 0x400000000013c950 in newobj_of (klass=0, flags=40, v1=0, v2=0, v3=0) at gc.c:1303
- #11 0x400000000013ccc0 in rb_newobj_of (klass=0, flags=40) at gc.c:1356
- #12 0x4000000000163740 in hash_alloc (klass=0) at hash.c:289
- #13 0x4000000000163860 in rb_hash_new () at hash.c:309
- #14 0x400000000050e420 in Init_BareVM () at vm.c:2822
- #15 0x40000000000f6b60 in ruby_setup () at eval.c:54
- #16 0x40000000000f6f50 in ruby_init () at eval.c:75
- #17 0x400000000001b010 in main (argc=9, argv=0x60000fffffffb1d8) at main.c:35
-
-The problem here is in call
- gc_mark_locations (objspace=0x6000000000045db0, start=0x0, end=0x6000080000000368) at gc.c:3310
-where 'start' (native_main_thread.register_stack_start)
-is supposed to be stack start but it's not initialized.
-
-The initialization of 'native_main_thread.register_stack_start'
-is supposed to be done in 'ruby_init_stack()'.
-
-But code under 'MAINSTACKADDR_AVAILABLE' exits early.
-The fix is to move 'register_stack_start' earlier.
-
-diff --git a/thread_pthread.c b/thread_pthread.c
-index c8a7a16..9ad448b 100644
---- a/thread_pthread.c
-+++ b/thread_pthread.c
-@@ -722,2 +722,8 @@ ruby_init_stack(volatile VALUE *addr
- native_main_thread.id = pthread_self();
-+#ifdef __ia64
-+ if (!native_main_thread.register_stack_start ||
-+ (VALUE*)bsp < native_main_thread.register_stack_start) {
-+ native_main_thread.register_stack_start = (VALUE*)bsp;
-+ }
-+#endif
- #if MAINSTACKADDR_AVAILABLE
-@@ -745,8 +751,2 @@ ruby_init_stack(volatile VALUE *addr
- #endif
--#ifdef __ia64
-- if (!native_main_thread.register_stack_start ||
-- (VALUE*)bsp < native_main_thread.register_stack_start) {
-- native_main_thread.register_stack_start = (VALUE*)bsp;
-- }
--#endif
- {
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