0df7fa0496
When an error occurs in name resolution, continue semantic processing in order to detect other errors. This means we can no longer assume that every `parser::Name` has a symbol even after name resolution completes. In `RewriteMutator`, only report internal error for unresolved symbol if there have been no fatal errors. Add `Error` flag to `Symbol` to indicate that an error occcurred related to it. Once we report an error about a symbol we should avoid reporting any more to prevent cascading errors. Add `HasError()` and `SetError()` to simplify working with this flag. Change some places that we assume that a `parser::Name` has a non-null symbol. There are probably more. `resolve-names.cc`: Set the `Error` flag when we report a fatal error related to a symbol. (This requires making some symbols non-const.) Remove `CheckScalarIntegerType()` as `ExprChecker` will take care of those constraints if they are expressed in the parse tree. One exception to that is the name in a `ConcurrentControl`. Explicitly perform that check using `EvaluateExpr()` and constraint classes so we get consistent error messages. In expression analysis, when a constraint is violated (like `Scalar<>` or `Integer<>`), reset the wrapped expression so that we don't assume it is valid. A `GenericExprWrapper` holding a std::nullopt indicates error. Change `EnforceTypeConstraint()` to return false when the constraint fails to enable this. check-do-concurrent.cc: Reorganize the Gather*VariableNames functions into one to simplify the task of filtering out unresolved names. Remove `CheckNoDuplicates()` and `CheckNoCollisions()` as those checks is already done in name resolution when the names are added to the scope. Original-commit: flang-compiler/f18@bcdb679405 Reviewed-on: https://github.com/flang-compiler/f18/pull/429 Tree-same-pre-rewrite: false |
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| common | ||
| evaluate | ||
| FIR | ||
| parser | ||
| semantics | ||
| CMakeLists.txt | ||