From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 20 Oct 2019 18:24:37 +0000 (+0100)
Subject: pyke/pyke.c: Check conversions hidden inside `KWLIST' and `KWMETH'.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/pyke/commitdiff_plain/dce47d5020064fb1fc0c58db165d72c7ffd10835?hp=dce47d5020064fb1fc0c58db165d72c7ffd10835

pyke/pyke.c: Check conversions hidden inside `KWLIST' and `KWMETH'.

Introduce a new macro `CONVERT_CAREFULLY' which checks (via a rather
sleazy hack) that its operand is of the expected type before converting
it to some other type.  This is protected by an `#ifdef' guard because
I'm thinking about adding it to a version of mLib, but I want to keep
the Pyke core independent of mLib.

Use this new macro to build better versions of `KWLIST' and `KWMETH',
which have casts hidden inside them, so that we can now be certain that
the method table entries match up with the functions.  (Spoiler: they
didn't, quite, and commit 19bff42f99d41cd9b8953ff61edfe35380b54d88,
backported onto the 1.1.x branch, fixes the bug that was found by this
change.)
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