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

[Krzysztof Parzyszek via flang-commits]

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@@ -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);
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kparzysz wrote:

Done

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