================
@@ -13367,6 +13367,20 @@ static void DiagnoseConstAssignment(Sema &S, const
Expr *E,
if (!DiagnosticEmitted) {
S.Diag(Loc, diag::err_typecheck_assign_const)
<< ExprRange << ConstVariable << VD << VD->getType();
+ ExprResult Deref;
+ Expr *TE = const_cast<Expr *>(E);
+ {
+ Sema::TentativeAnalysisScope Trap(S);
+ Deref = S.ActOnUnaryOp(S.getCurScope(), Loc, tok::star, TE);
+ }
+ if (Deref.isUsable() &&
+ Deref.get()->isModifiableLvalue(S.Context, &Loc) ==
+ Expr::MLV_Valid &&
+ !E->getType()->isObjCObjectPointerType()) {
+ S.Diag(Loc, diag::note_typecheck_expression_not_modifiable_lvalue)
+ << E->getSourceRange()
+ << FixItHint::CreateInsertion(E->getBeginLoc(), "*");
+ }
----------------
Sirraide wrote:
Can you maybe move this into a helper function, because from what I can tell at
least, this is (almost) the exact same code as in `CheckForModifiableLValue`.
The API could be something along the lines of this
```c++
static void MaybeSuggestDerefFixIt(Sema& S, Expr* E) { ... }
```
though it might potentially need a few more parameters if there are differences
between this here and in `CheckForModifiableLValue` that I’m missing.
(The main error diagnostic, e.g. the `diag::note_typecheck_assign_const` that’s
emitted below here, should *not* be moved into the helper imo.)
https://github.com/llvm/llvm-project/pull/94159
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