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Fix spaceship operator bugs, document, add tests

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Remove some erroneously added brackets_increment() calls.

Reject <=> in preprocessor expressions with a clear error message (it
seems it isn't supported here - clang and gcc don't at least).

The type returned by `<=>` is not `bool`.  We pretend it's
`int` for now, which should work for how it's likely to be used
in constant expressions.

Fixes #1622
This commit is contained in:
Olly Betts 2022-03-09 10:08:17 +13:00
commit 02b4bd8eca
10 changed files with 91 additions and 7 deletions
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@ -204,6 +204,7 @@ SWIG_TOKEN_LESSTHAN &lt;
SWIG_TOKEN_GREATERTHAN &gt;
SWIG_TOKEN_LTEQUAL &lt;=
SWIG_TOKEN_GTEQUAL &gt;=
SWIG_TOKEN_LTEQUALGT &lt;=&gt;
SWIG_TOKEN_NOT ~
SWIG_TOKEN_LNOT !
SWIG_TOKEN_LBRACKET [