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Mostly this involves checking for NULL pointer before doing operations that add a non-zero offset. The exception is an overflow warning in heap_fetch_toast_slice(). This was caused by unneeded parentheses forcing an expression to be evaluated to a negative integer, which then got cast to size_t. Per clang 21 undefined behavior sanitizer. Backpatch to all supported versions. Co-authored-by: Alexander Lakhin <exclusion@gmail.com> Reported-by: Alexander Lakhin <exclusion@gmail.com> Discussion: https://postgr.es/m/777bd201-6e3a-4da0-a922-4ea9de46a3ee@gmail.com Backpatch-through: 14 |
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