EvalStatus is a struct with detailed info about an evaluation in progress. More...
#include "clang/AST/Expr.h"
EvalStatus is a struct with detailed info about an evaluation in progress.
Definition at line 606 of file Expr.h.
◆ EvalStatus() clang::Expr::EvalStatus::EvalStatus ( ) default ◆ hasSideEffects() bool clang::Expr::EvalStatus::hasSideEffects ( ) const inline ◆ DiagDiag - If this is non-null, it will be filled in with a stack of notes indicating why evaluation failed (or why it failed to produce a constant expression).
If the expression is unfoldable, the notes will indicate why it's not foldable. If the expression is foldable, but not a constant expression, the notes will describes why it isn't a constant expression. If the expression is a constant expression, no notes will be produced.
FIXME: this causes significant performance concerns and should be refactored at some point. Not all evaluations of the constant expression interpreter will display the given diagnostics, this means those kinds of uses are paying the expense of generating a diagnostic (which may include expensive operations like converting APValue objects to a string representation).
Definition at line 630 of file Expr.h.
Referenced by calculateConstraintSatisfaction(), clang::Sema::CheckForImmediateInvocation(), clang::Sema::ConstantFoldAttrArgs(), diagnoseWellFormedUnsatisfiedConstraintExpr(), EvaluateAndDiagnoseImmediateInvocation(), clang::Expr::EvaluateAsInitializer(), clang::Sema::EvaluateConvertedConstantExpression(), clang::VarDecl::evaluateDestruction(), clang::Expr::EvaluateKnownConstInt(), clang::Expr::EvaluateKnownConstIntCheckOverflow(), isNullPointerValueTemplateArgument(), and clang::Sema::VerifyIntegerConstantExpression().
◆ HasSideEffects bool clang::Expr::EvalStatus::HasSideEffects = false ◆ HasUndefinedBehavior bool clang::Expr::EvalStatus::HasUndefinedBehavior = falseWhether the evaluation hit undefined behavior.
For example, 1.0 / 0.0 can be folded to Inf, but has undefined behavior. Likewise, INT_MAX + 1 can be folded to INT_MIN, but has UB.
Definition at line 614 of file Expr.h.
Referenced by clang::Sema::VerifyIntegerConstantExpression().
The documentation for this struct was generated from the following file:
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