llvm-project

43233b8a - [Clang] Add missing __ob_trap check for sign change (#188340)

[Clang] Add missing __ob_trap check for sign change (#188340) Add a missing OBTrapInvolved check before EmitIntegerSignChangeCheck(). This is considered "missing" as a previous attempt (https://github.com/llvm/llvm-project/pull/185772) to properly add an `__ob_trap` backdoor missed this particular instance. This backdoor is needed because we want `__ob_trap` types to be picky about implicit conversions (including implicit sign change): ```c unsigned int __ob_trap big = 4294967295; (signed int)big; // should trap! ``` Move the `OBTrapInvolved` setup to the top of the function so it can be used in all the places we need it.