1.0.26.8: QSHOW changes, bug reporting guidelines

[sbcl.git] / src / runtime / gc-internal.h

diff --git a/src/runtime/gc-internal.h b/src/runtime/gc-internal.h
index 276c9c3..c1e0834 100644 (file)
--- a/src/runtime/gc-internal.h
+++ b/src/runtime/gc-internal.h
@@ -19,7 +19,11 @@
 #include <genesis/simple-fun.h>
 
 /* disabling gc assertions made no discernable difference to GC speed,
- * last I tried it - dan 2003.12.21 */
+ * last I tried it - dan 2003.12.21
+ *
+ * And it's unsafe to do so while things like gc_assert(0 ==
+ * thread_mutex_lock(&allocation_lock)) exist. - MG 2009-01-13
+ */
 #if 1
 # define gc_assert(ex)                                                 \
 do {                                                                   \
@@ -97,7 +101,7 @@ gc_general_alloc(long nbytes, int page_type_flag, int quick_p)
     return gc_alloc_with_region(nbytes, page_type_flag, my_region, quick_p);
 }
 #else
-void *gc_general_alloc(long nbytes,int page_type_flag,int quick_p);
+extern void *gc_general_alloc(long nbytes,int page_type_flag,int quick_p);
 #endif
 
 extern long (*scavtab[256])(lispobj *where, lispobj object);