0.8.4.1

[sbcl.git] / src / runtime / cheneygc.c

diff --git a/src/runtime/cheneygc.c b/src/runtime/cheneygc.c
index 53930cf..745c61b 100644 (file)
--- a/src/runtime/cheneygc.c
+++ b/src/runtime/cheneygc.c
@@ -136,6 +136,8 @@ collect_garbage(unsigned ignore)
     gettimeofday(&start_tv, (struct timezone *) 0);
 #endif
        
+    /* it's possible that signals are blocked already if this was called 
+     * from a signal handler (e.g. with the sigsegv gc_trigger stuff) */
     sigemptyset(&tmp);
     sigaddset_blockable(&tmp);
     sigprocmask(SIG_BLOCK, &tmp, &old);