diff --git a/libunwind/test/signal_frame.pass.cpp b/libunwind/test/signal_frame.pass.cpp
--- a/libunwind/test/signal_frame.pass.cpp
+++ b/libunwind/test/signal_frame.pass.cpp
@@ -21,6 +21,10 @@
 // are necessary to run this test.
 // UNSUPPORTED: target=powerpc{{(64)?}}-ibm-aix
 
+// Windows doesn't generally use CFI directives. However, i686
+// mingw targets do use DWARF (where CFI directives are supported).
+// UNSUPPORTED: target={{x86_64|arm.*|aarch64}}-{{.*}}-windows-{{.*}}
+
 #undef NDEBUG
 #include <assert.h>
 #include <stdlib.h>