tbaeder added a comment. In D137082#3899032 <https://reviews.llvm.org/D137082#3899032>, @aaron.ballman wrote:
>> There is a difference between a Pointer and a "Pointer to the first element >> of an array". > > I'm pretty confused because this statement is false per the language standard > (http://eel.is/c++draft/expr.sub#2). Basically, array subscripting works > through pointer arithmetic, so `&array[0]` and `array` (decayed to a pointer) > have the same value. Why do we need to offset to get to the first element in > the interpreter? That's just an implementation detail in the `Pointer` class. For primitive arrays, we need the `sizeof(InitMap*)` applied, which happens via `atIndex()`. Otherwise, `deref()` will look at the first few bytes of the `InitMap*` pointer. I've added some documentation about this in https://reviews.llvm.org/D135750 (and the `MetadataSize` added to `Descriptor` there could be used to clean this up I think). Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D137082/new/ https://reviews.llvm.org/D137082 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
