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-rw-r--r--thread_pthread.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/thread_pthread.c b/thread_pthread.c
index c87e952750..04e938e647 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -270,7 +270,7 @@ gvl_acquire(rb_vm_t *vm, rb_thread_t *th)
rb_native_mutex_unlock(&vm->gvl.lock);
}
-static native_thread_data_t *
+static const native_thread_data_t *
gvl_release_common(rb_vm_t *vm)
{
native_thread_data_t *next;
@@ -292,7 +292,7 @@ gvl_release(rb_vm_t *vm)
static void
gvl_yield(rb_vm_t *vm, rb_thread_t *th)
{
- native_thread_data_t *next;
+ const native_thread_data_t *next;
/*
* Perhaps other threads are stuck in blocking region w/o GVL, too,