On Wednesday, 8 April 2026 01:27:25 Pacific Daylight Time Volker Hilsheimer via Development wrote: > Our code does not seem fundamentally different from this, which works (as it > should) fine with gcc trunk, -O3, and -fsanitize=undefined > > https://godbolt.org/z/P4fPG414s
Absence of UBSan complaint is not absence of UB. This may simply be a case not implemented, because the object model inside of the compiler does not carry enough information. And that could change at any moment, in a future compiler. > The main argument repeated in the discussion is that this fix requires a > recompile as well as Qt upgrade. But given that the issue evidently only > materializes with a hypothetical future compiler, a recompile would be > needed for that to happen anyway. So that argument seems to bite its own > tail. Agreed. -- Thiago Macieira - thiago.macieira (AT) intel.com Principal Engineer - Intel DCG - Platform & Sys. Eng.
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