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Avoid 32-bit shift overflow when computing alignment in ReportCorruptedFree. - #1793
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`ReportCorruptedFree` computed pointer alignment as `1u << absl::countr_zero(reinterpret_cast<uintptr_t>(ptr))`. When a corrupted pointer is `>= 4 GiB`-aligned (`countr_zero >= 32`) on 64-bit platforms, shifting a 32-bit `1u` literal invokes undefined behavior and reports `got alignment 1`. Use `uintptr_t{1} << ...` in both `ReportCorruptedFree` overloads.
PiperOrigin-RevId: 1011015766
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Avoid 32-bit shift overflow when computing alignment in ReportCorruptedFree.
ReportCorruptedFreecomputed pointer alignment as1u << absl::countr_zero(reinterpret_cast<uintptr_t>(ptr)). When a corrupted pointer is>= 4 GiB-aligned (countr_zero >= 32) on 64-bit platforms, shifting a 32-bit1uliteral invokes undefined behavior and reportsgot alignment 1. Useuintptr_t{1} << ...in bothReportCorruptedFreeoverloads.