From: Tom Hughes <tom@compton.nu>
Date: Tue, 16 Nov 2004 12:08:45 +0000 (+0000)
Subject: Don't try and return the old mask from sigprocmask if the user gave
X-Git-Tag: svn/VALGRIND_3_0_0~1293
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=52fd73ca74d43a0a2cd2a38502bb352f0a6be5c7;p=thirdparty%2Fvalgrind.git

Don't try and return the old mask from sigprocmask if the user gave
a null pointer for that argument.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3020
---

diff --git a/coregrind/vg_syscalls.c b/coregrind/vg_syscalls.c
index b9d88febab..15f4307046 100644
--- a/coregrind/vg_syscalls.c
+++ b/coregrind/vg_syscalls.c
@@ -5944,7 +5944,8 @@ PREx(sys_sigprocmask, SIG_SIM)
 				&bigger_set,
 				&bigger_oldset );
 
-      *oldset = bigger_oldset.sig[0];
+      if (oldset)
+        *oldset = bigger_oldset.sig[0];
    }
 }