2011-03-13 Ivan Maidanski <ivmai@mail.ru>

	* dbg_mlc.c (GC_make_closure): Fix SEGV in case GC_malloc returns
	NULL.
	* dbg_mlc.c (GC_debug_register_finalizer,
	GC_debug_register_finalizer_no_order,
	GC_debug_register_finalizer_unreachable,
	GC_debug_register_finalizer_ignore_self): Handle out of memory
	case properly (similar to GC_register_finalizer_inner).
	* headers.c (GC_install_header): Handle the case when alloc_hdr()
	returns NULL.
	* os_dep.c (GC_get_maps_len): Defend against missing "maps" file.
	* pthread_support.c (GC_mark_thread): Place a dummy return
	statement (which uses "id" argument) before the actual use of "id"
	as an array index (to suppress a warning produced by some static
	code analysis tools).
	* win32_threads.c (GC_mark_thread): Ditto.
	* pthread_support.c (GC_thr_init): Abort (with the appropriate
	message) if out of memory.

1 files changed, 5 insertions, 3 deletions

diff --git a/headers.c b/headers.c
index 1f8a7c97..c4f5023c 100644
--- a/headers.c
+++ b/headers.c
@@ -261,10 +261,12 @@ GC_INNER struct hblkhdr * GC_install_header(struct hblk *h)
 
     if (!get_index((word) h)) return(0);
     result = alloc_hdr();
-    SET_HDR(h, result);
-#   ifdef USE_MUNMAP
+    if (result) {
+      SET_HDR(h, result);
+#     ifdef USE_MUNMAP
         result -> hb_last_reclaimed = (unsigned short)GC_gc_no;
-#   endif
+#     endif
+    }
     return(result);
 }