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gc.c: force STACK_GROW_DIRECTION for emscripten

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The configure script fails to guess the direction on emscripten.
Perhaps this is because of https://github.com/kripken/emscripten/issues/2093

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62410 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mame 2018-02-15 01:59:17 +00:00
parent 50700c4d3c
commit b4b4b94367
1 changed files with 5 additions and 0 deletions
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5
gc.c
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@ -3996,6 +3996,11 @@ init_mark_stack(mark_stack_t *stack)
#define STACK_END (ec->machine.stack_end)
#define STACK_LEVEL_MAX (ec->machine.stack_maxsize/sizeof(VALUE))
#ifdef __EMSCRIPTEN__
#undef STACK_GROW_DIRECTION
#define STACK_GROW_DIRECTION 1
#endif
#if STACK_GROW_DIRECTION < 0
# define STACK_LENGTH (size_t)(STACK_START - STACK_END)
#elif STACK_GROW_DIRECTION > 0