lib/ogsf: fix possible overflow errors in gvld.c #4637
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We were doing `(255 << 24)` which causes integer overflow and positive number gets converted to negative number. We were then assigning this to an unsigned integer in multiple places, which does conversion in a different way. For example: If we do unsigned int x = -20, `UINT_MAX + 1 - 20` is assigned to x. I do not think that's what is intended when we do `ktrans = (255 << 24)`. Fix instances of that, by using an unsigned int literal over int literal. This issue was found using cppcheck tool. Signed-off-by: Mohan Yelugoti <[email protected]>
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nilason
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nilason
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Nov 5, 2024
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This is similar to #4635.
We were doing
(255 << 24)which causes integer overflow and positive number gets converted to negative number. We were then assigning this to an unsigned integer in multiple places, which does conversion in a different way.For example: If we do unsigned int x = -20,
UINT_MAX + 1 - 20is assigned to x.I do not think that's what is intended when we do
ktrans = (255 << 24). Fix instances of that, by using an unsigned int literal over int literal.This issue was found using cppcheck tool.