================
@@ -12091,6 +12091,11 @@ void Sema::CheckImplicitConversion(Expr *E, QualType
T, SourceLocation CC,
if (SourceMgr.isInSystemMacro(CC))
return;
+ if (const auto *UO = dyn_cast<UnaryOperator>(E)) {
+ return DiagnoseImpCast(*this, E, T, CC,
+ diag::warn_impcast_integer_precision_on_negation);
+ }
+
----------------
cor3ntin wrote:
We should check which operator it is. Did you try to add tests with
```
unsigned char test_diag(unsigned char x) {
return +x;
}```
https://github.com/llvm/llvm-project/pull/139429
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