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Diffstat (limited to 'clang/lib/AST/ExprConstant.cpp')
| -rw-r--r-- | clang/lib/AST/ExprConstant.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp index fda5653..7afc44d 100644 --- a/clang/lib/AST/ExprConstant.cpp +++ b/clang/lib/AST/ExprConstant.cpp @@ -2528,6 +2528,11 @@ static llvm::RoundingMode getActiveRoundingMode(EvalInfo &Info, const Expr *E, /// Check if the given evaluation result is allowed for constant evaluation. static bool checkFloatingPointResult(EvalInfo &Info, const Expr *E, APFloat::opStatus St) { + // In a constant context, assume that any dynamic rounding mode or FP + // exception state matches the default floating-point environment. + if (Info.InConstantContext) + return true; + FPOptions FPO = E->getFPFeaturesInEffect(Info.Ctx.getLangOpts()); if ((St & APFloat::opInexact) && FPO.getRoundingMode() == llvm::RoundingMode::Dynamic) { |