In _sre.c, the VTRACE macro normally gets defined to nothing. It later gets used as the body of control structures such as "else" without braces, which causes many compilers to warn (to catch stray semicolons like "else;"). This makes it difficult to compile Python as part of a project which uses -Werror, such as GRUB. Please consider defining VTRACE as do {} while(0) instead, as the standard convention for an empty function-like macro with no return value.
_sre is a module written in C, not Python; we call that an extension module. The Library component is used for Python modules, which are found in the Lib directory in a checkout of CPython. See #12711.
Éric Araujo wrote: > _sre is a module written in C, not Python; we call that an extension > module. The Library component is used for Python modules, which are > found in the Lib directory in a checkout of CPython. See #12711. Ok, I wasn't aware of this. Thanks.
