[flang-commits] [flang] [flang] Avoid left shifts of negative signed values (PR #84786)

[Peter Klausler via flang-commits]

================
@@ -150,7 +150,10 @@ class Integer {
           }
         }
       } else {
-        INT signExtension{-(n < 0)};
+        // Avoid left shifts of negative signed values (that's an undefined
+        // behavior in C++).
+        auto signExtension = std::make_unsigned_t<INT>(n < 0);
----------------
klausler wrote:

Use braced initialization in Flang front-end code.

https://github.com/llvm/llvm-project/pull/84786