8000 Update `stack_start` and `stack_maxsize` according to stack direction. · ruby/ruby@e40f745 · GitHub
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Update stack_start and stack_maxsize according to stack direction.
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‎thread.c

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -715,6 +715,7 @@ rb_vm_push_frame(rb_execution_context_t *sec,
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static int
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thread_start_func_2(rb_thread_t *th, VALUE *stack_start, VALUE *register_stack_start)
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{
718+
STACK_GROW_DIR_DETECTION;
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enum ruby_tag_type state;
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rb_thread_list_t *join_list;
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rb_thread_t *main_th;
@@ -740,8 +741,8 @@ thread_start_func_2(rb_thread_t *th, VALUE *stack_start, VALUE *register_stack_s
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ruby_thread_set_native(th);
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th->ec->machine.stack_start = vm_stack;
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th->ec->machine.stack_maxsize = th->ec->machine.stack_end - th->ec->machine.stack_start;
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th->ec->machine.stack_start = STACK_DIR_UPPER(vm_stack + size, vm_stack);
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th->ec->machine.stack_maxsize -= size * sizeof(VALUE);
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#ifdef __ia64
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th->ec->machine.register_stack_start = register_stack_start;
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#endif

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