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| author | Alan Modra <amodra@gmail.com> | 2021-05-15 14:36:26 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2021-05-15 14:36:54 +0930 |
| commit | fc5e0925d4bff79c8c036cf00803112a1ec04188 (patch) | |
| tree | d71d622247fdaadaa710ece3fdce8bfb9ffc2289 /sim | |
| parent | 7c96e6120f1b9b5025629bbe995ca55d1be8f36f (diff) | |
| download | binutils-fc5e0925d4bff79c8c036cf00803112a1ec04188.zip binutils-fc5e0925d4bff79c8c036cf00803112a1ec04188.tar.gz binutils-fc5e0925d4bff79c8c036cf00803112a1ec04188.tar.bz2 | |
_mul_overflow and get_encoded_value
A sufficiently mad compiler optimiser can take undefined behaviour
according to the C standard as an opportunity to remove code. Since
"data + size" might be seen to be past the end of an array,
calculating such an expression is UB.
_mul_overflow is infrastructure for later patches.
* bucomm.h (_mul_overflow): Define.
* dwarf.c (get_encoded_value): Avoid pointer UB.
Diffstat (limited to 'sim')
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