203296d642
BoundsChecking uses ObjectSizeOffsetEvaluator to keep track of the underlying size/offset of pointers in allocations. However, ObjectSizeOffsetVisitor (something ObjectSizeOffsetEvaluator uses to check for constant sizes/offsets) doesn't quite treat sizes and offsets the same way as BoundsChecking. BoundsChecking wants to know the size of the underlying allocation and the current pointer's offset within it, but ObjectSizeOffsetVisitor only cares about the size from the pointer to the end of the underlying allocation. This only comes up when merging two size/offset pairs. Add a new mode to ObjectSizeOffsetVisitor which cares about the underlying size/offset rather than the size from the current pointer to the end of the allocation. Fixes a false positive with -fsanitize=bounds. Reviewed By: vitalybuka, asbirlea Differential Revision: https://reviews.llvm.org/D131001 |
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| .. | ||
| many-trap.ll | ||
| many-traps-2.ll | ||
| nosanitize-bounds.ll | ||
| opt.ll | ||
| phi.ll | ||
| simple-32.ll | ||
| simple.ll | ||