fix stupid logic error in testing separate bits required for AVX support

diff --git a/libs/pbd/fpu.cc b/libs/pbd/fpu.cc
index 29d09f7aa947626459b69c8a2ad033241001e16e..93f75f7e2a5bb06e148b1aed74e935f0411ae9de 100644 (file)
--- a/libs/pbd/fpu.cc
+++ b/libs/pbd/fpu.cc
@@ -97,7 +97,10 @@ FPU::FPU ()
 #endif /* PLATFORM_WINDOWS */
 
 #ifndef __APPLE__
-       if (cpuflags & ((1<<27) /* AVX */ |(1<<28) /* XGETBV */)) {
+       /* must check for both AVX and OSXSAVE support in cpuflags before
+        * attempting to use AVX related instructions.
+        */
+       if ((cpuflags & (1<<27)) /* AVX */ && (cpuflags & (1<<28) /* (OS)XSAVE */)) {
 
                std::cerr << "Looks like AVX\n";