X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fruntime%2Fx86-linux-os.c;h=ddbe154236cccc0d4302c61caed03302873071ba;hb=9e83e3dc367e4fd47d3b27a170cb3a87bb5b1b39;hp=c15665d1c41df58143ce8dd42509eea16d7c8024;hpb=9a19ce460a70a6c1de36095b3e2621116b91cc80;p=sbcl.git

diff --git a/src/runtime/x86-linux-os.c b/src/runtime/x86-linux-os.c
index c15665d..ddbe154 100644
--- a/src/runtime/x86-linux-os.c
+++ b/src/runtime/x86-linux-os.c
@@ -208,7 +208,8 @@ os_context_sigmask_addr(os_context_t *context)
 void
 os_restore_fp_control(os_context_t *context)
 {
-    asm ("fldcw %0" : : "m" (context->uc_mcontext.fpregs->cw));
+    if (context->uc_mcontext.fpregs)
+        asm ("fldcw %0" : : "m" (context->uc_mcontext.fpregs->cw));
 }
 
 void