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7ceb2154ed
- In 'readutf8esc' (llex.c), the overflow check must be done before shifting the accumulator. It was working because tests were using 64-bit longs. Failed with 32-bit longs. - In OP_FORPREP (lvm.c), avoid negating an unsigned value. Visual Studio gives a warning for that operation, despite being well defined in ISO C. - In 'luaV_execute' (lvm.c), 'cond' can be defined only when needed, like all other variables.