Shafik Yaghmour 33b6b67462 [clang] Fix crash in __builtin_strncmp and other related builtin functions ...

The implementation of __builtin_strncmp and other related builtins function use
getExtValue() to evaluate the size argument. This can cause a crash when the
value does not fit into an int64_t value, which is can be expected since the
type of the argument is size_t.

The fix is to switch to using getZExtValue().

This fixes: https://github.com/llvm/llvm-project/issues/64876

Differential Revision: https://reviews.llvm.org/D158557

2023-08-25 13:54:50 -07:00

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