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-rw-r--r--clang/lib/Sema/SemaExpr.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index c06943f6718..5f46a977b12 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -5742,6 +5742,10 @@ inline QualType Sema::CheckLogicalOperands( // C99 6.5.[13,14]
// is a constant.
if (lex->getType()->isIntegerType() && !lex->getType()->isBooleanType() &&
rex->getType()->isIntegerType() && rex->isEvaluatable(Context) &&
+ // Don't warn if the RHS is a (constant folded) boolean expression like
+ // "sizeof(int) == 4".
+ !rex->isKnownToHaveBooleanValue() &&
+ // Don't warn in macros.
!Loc.isMacroID())
Diag(Loc, diag::warn_logical_instead_of_bitwise)
<< rex->getSourceRange()
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