Eliminate 'accessing GC_dont_gc without lock' in GC_init code defect FP

* allchblk.c (GC_allochblk): Add assertion that GC lock is held on
entrance.
* new_hblk.c (GC_new_hblk): Likewise.
* pthread_support.c (GC_unregister_my_thread_inner): Likewise.
* misc.c [LINT2] (GC_init): Call GC_disable() instead of setting
GC_dont_gc directly.

1 files changed, 1 insertions, 0 deletions

diff --git a/new_hblk.c b/new_hblk.c
index 88de14dd..3e59c020 100644
--- a/new_hblk.c
+++ b/new_hblk.c
@@ -174,6 +174,7 @@ GC_INNER void GC_new_hblk(size_t gran, int kind)
   GC_bool clear = GC_obj_kinds[kind].ok_init;
 
   GC_STATIC_ASSERT((sizeof (struct hblk)) == HBLKSIZE);
+  GC_ASSERT(I_HOLD_LOCK());
 
   if (GC_debugging_started) clear = TRUE;