Disable broken asm test on Cygwin as nobody knows how to fix it.
diff --git a/test cases/common/128 generated assembly/meson.build b/test cases/common/128 generated assembly/meson.build
index 2837747..89b680d 100644
--- a/test cases/common/128 generated assembly/meson.build
+++ b/test cases/common/128 generated assembly/meson.build
@@ -2,6 +2,10 @@
 
 cc = meson.get_compiler('c')
 
+if build_machine.system() == 'cygwin'
+  error('MESON_SKIP_TEST: Cygwin is broken and nobody knows how to fix it. Patches welcome.')
+endif
+
 if ['msvc', 'clang-cl', 'intel-cl'].contains(cc.get_id())
   error('MESON_SKIP_TEST: assembly files cannot be compiled directly by the compiler')
 endif