On 11/11/21 1:23 PM, Chris Peterson wrote:
On 2021-11-10 2:54 AM, Emilio Cobos Álvarez wrote:
* I think the real issue here is the implicit narrowing conversions
and integer promotions of C++, which we do have static analysis to
prevent (even if static analysis isn't always perfect, neither are
the diagnostics that compilers produce when you use signed types).
For a sense of scale, here are the number of mozilla-central warnings
for some clang diagnostics (disabled by default) related to integer
signedness and narrowing:
Is this something where it could be useful for searchfox to be able to
help display these conversions/promotions as an optional display layer?
For example, inserting little emoji on implicit conversions? This would
be along the lines of the bug I filed to try and make NRVO
(in)eligibility surfaced in searchfox as tracked at
https://bugzilla.mozilla.org/show_bug.cgi?id=1709710.
The use-case would be that if you're looking at code in searchfox where
you're already suspicious of the code / trying to manually figure out
what the compiler would think of something, it could be nice to be able
to turn this on when desired. The information could also be made
accessible in the navigation sidebar which will soon optionally start
behaving perhaps a bit more like an inspector.
Andrew
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