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-rw-r--r--thread_pthread.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/thread_pthread.c b/thread_pthread.c
index 02ff18517c..06769bd293 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -581,6 +581,10 @@ extern void *STACK_END_ADDRESS;
#endif
#undef ruby_init_stack
+/* Set stack bottom of Ruby implementation.
+ *
+ * You must call this function before any heap allocation by Ruby implementation.
+ * Or GC will break living objects */
void
ruby_init_stack(volatile VALUE *addr
#ifdef __ia64