> there are downsides: one bug may trigger another report

Doesn't UBSan have the same problem?

> the user will spend time investigating more reports than needed.

True but that would be a concious trade-off.

>>> It will create more problems to users and developers than it will solve.
>>
>> Agreed, it may cause false positives, duplicated reports, etc. But it
>> does not have to be enabled by default.
>
> These, and many more.

Just FYI this works quite well for us in practice (we use patched
gcc). E.g. I was able to detect and fix a dozen of bugs in large app
in 3 or 4 iterations instead of 10.

> I remain unconvinced...

I was expecting this :)

-Y

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