I'm not sure exactly when or how these new warnings from clang-cl happened (a lot of them):
f:/ProgramFiler-x86/WindowsKits/Include/10.0.15063.0/ucrt/stdlib.h(78,5): warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined] #if _CRT_INTERNAL_NONSTDC_NAMES ^ f:\ProgramFiler-x86\WindowsKits\Include\10.0.15063.0\ucrt\corecrt.h(288,11): note: expanded from macro '_CRT_INTERNAL_NONSTDC_NAMES' ( defined _CRT_DECLARE_NONSTDC_NAMES && _CRT_DECLARE_NONSTDC_NAMES) || \ ^ Really, why? This happens in any program using Gnulib. The above is from Wget. I guess it has something to do with (the lack of?) one of the '_CRT_x' defines MS uses. I compile with '-Wno-expansion-to-defined' to ignore this warning. Any idea? -- --gv