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Sign upFix compiler warning on Windows. #18012
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Python-ast.h contains a macro named YIELD that conflicts with the YIELD macro in Windows system headers. While Python-ast.h has an "undef YIELD" directive to prevent this, it means that Python-ast.h must be included before Windows header files or we run into a re-declaration warning. In commit c96be81 an include for pycore_pystate.h was added which indirectly includes Windows header files. In this commit we re-order the includes to fix this warning.
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ammaraskar commentedJan 15, 2020
Looks like c96be81 introduced an include for
pycore_pystate.hincompile.c. This file indirectly includes Windows header files through the use of conditional variables.Since there is a conflict between the
Python-ast.hYIELD macro and the windows YIELD macro: https://github.com/python/cpython/blob/master/Include/Python-ast.h#L12we have to include this file before Windows headers to avoid redeclaring the macro and running into this warning: https://github.com/python/cpython/runs/390843969#step:3:570