diff options
Diffstat (limited to 'include/llvm/Support/FileSystem.h')
| -rw-r--r-- | include/llvm/Support/FileSystem.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/llvm/Support/FileSystem.h b/include/llvm/Support/FileSystem.h index 29515c231bc46..e3c5de7fbe642 100644 --- a/include/llvm/Support/FileSystem.h +++ b/include/llvm/Support/FileSystem.h @@ -116,7 +116,9 @@ inline perms &operator&=(perms &l, perms r) { return l; } inline perms operator~(perms x) { - return static_cast<perms>(~static_cast<unsigned short>(x)); + // Avoid UB by explicitly truncating the (unsigned) ~ result. + return static_cast<perms>( + static_cast<unsigned short>(~static_cast<unsigned short>(x))); } class UniqueID { |