forked from OSchip/llvm-project
c9a8a6c030
Clang 4.0 trunk warns: warning: logical not is only applied to the left hand side of this bitwise operator [-Wlogical-not-parentheses] This points to a potential bug if the code really wants to check if the single bit is not set: If for example (buf.edx >> 9) = 2 (has any bit set except the least significant one), 'logical not' will return 0 which stays 0 after the 'bitwise and'. To do this correctly we first need to evaluate the 'bitwise and'. In that case it returns 2 & 1 = 0 which after the 'logical not' evaluates to 1. Differential Revision: https://reviews.llvm.org/D28599 llvm-svn: 291764 |
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