Alexandre Julliard : ntdll: Don't fetch extended FPU context if there' s no FPU context at all.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0375b7a1f323b0bf77c08b7df57a8153443eae91
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0375b7a1f323b0bf77c08b7df57a8153443eae91

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Tue Jan 22 10:20:12 2008 +0100

ntdll: Don't fetch extended FPU context if there's no FPU context at all.

---

 dlls/ntdll/signal_i386.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/ntdll/signal_i386.c b/dlls/ntdll/signal_i386.c
index 172d362..a6ca6fd 100644
--- a/dlls/ntdll/signal_i386.c
+++ b/dlls/ntdll/signal_i386.c
@@ -125,7 +125,7 @@ typedef ucontext_t SIGCONTEXT;
 #define ERROR_sig(context)   ((context)->uc_mcontext.gregs[REG_ERR])
 
 #define FPU_sig(context)     ((FLOATING_SAVE_AREA*)((context)->uc_mcontext.fpregs))
-#define FPUX_sig(context)    ((context)->uc_mcontext.fpregs->status >> 16 ? NULL : (XMM_SAVE_AREA32 *)(FPU_sig(context) + 1))
+#define FPUX_sig(context)    (FPU_sig(context) && !((context)->uc_mcontext.fpregs->status >> 16) ? (XMM_SAVE_AREA32 *)(FPU_sig(context) + 1) : NULL)
 
 #define VM86_EAX 0 /* the %eax value while vm86_enter is executing */