Fix rebase of checkArithmetic (#20767)

dlang · Jan 23, 2025 · 1a9848a · 1a9848a
1 parent 864b574
commit 1a9848a
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/compiler/src/dmd/expressionsem.d b/compiler/src/dmd/expressionsem.d
@@ -14740,6 +14740,13 @@ private bool checkArithmetic(Expression e, EXP op)
         error(e.loc, msg, EXPtoString(op).ptr, e.toChars(), e.type.toChars());
         return true;
     }
+
+    // FIXME: Existing code relies on adding / subtracting types in typeof() expressions:
+    // alias I = ulong; alias U = typeof(I + 1u);
+    // https://github.com/dlang/dmd/issues/20763
+    if (op == EXP.add || op == EXP.min)
+        return false;
+
     return e.checkValue();
 }