[flang-commits] [PATCH] D156750: [flang] Attempt to silence new GCC warnings

[Peter Klausler via Phabricator via flang-commits]

klausler created this revision.
klausler added a reviewer: clementval.
klausler added a project: Flang.
Herald added subscribers: sunshaoce, mehdi_amini, jdoerfert.
Herald added a reviewer: sscalpone.
Herald added a reviewer: kiranchandramohan.
Herald added a project: All.
klausler requested review of this revision.

Restructure three code sites that are now eliciting new warnings
from the latest GCC compiler.  One of these looks like a
legitimate problem with a reference to an expression temporary.

Fixes https://github.com/llvm/llvm-project/issues/64200.


https://reviews.llvm.org/D156750

Files:
  flang/lib/Lower/ConvertCall.cpp
  flang/lib/Lower/OpenMP.cpp
  flang/lib/Semantics/runtime-type-info.cpp


Index: flang/lib/Semantics/runtime-type-info.cpp
===================================================================
--- flang/lib/Semantics/runtime-type-info.cpp
+++ flang/lib/Semantics/runtime-type-info.cpp
@@ -202,7 +202,8 @@
   if (x.empty()) {
     return SomeExpr{evaluate::NullPointer{}};
   } else {
-    const auto &derivedType{x.front().GetType().GetDerivedTypeSpec()};
+    auto dyType{x.front().GetType()};
+    const auto &derivedType{dyType.GetDerivedTypeSpec()};
     ObjectEntityDetails object;
     DeclTypeSpec typeSpec{DeclTypeSpec::TypeDerived, derivedType};
     if (const DeclTypeSpec * spec{scope.FindType(typeSpec)}) {
Index: flang/lib/Lower/OpenMP.cpp
===================================================================
--- flang/lib/Lower/OpenMP.cpp
+++ flang/lib/Lower/OpenMP.cpp
@@ -2645,8 +2645,8 @@
   const auto &expr{std::get<Fortran::parser::Expr>(assignmentStmt.t)};
   const auto *e{Fortran::semantics::GetExpr(expr)};
   const auto *v{Fortran::semantics::GetExpr(var)};
-  const Fortran::semantics::Symbol &varSymbol =
-      Fortran::evaluate::GetSymbolVector(*v).front();
+  auto varSyms{Fortran::evaluate::GetSymbolVector(*v)};
+  const Fortran::semantics::Symbol &varSymbol{varSyms.front()};
   for (const Fortran::semantics::Symbol &symbol :
        Fortran::evaluate::GetSymbolVector(*e))
     if (varSymbol == symbol)
Index: flang/lib/Lower/ConvertCall.cpp
===================================================================
--- flang/lib/Lower/ConvertCall.cpp
+++ flang/lib/Lower/ConvertCall.cpp
@@ -1697,7 +1697,8 @@
     // If the actual argument does not need to be passed via an address,
     // or will be passed in the address of a temporary copy, it can be loaded
     // before the elemental loop nest.
-    const auto &arg = caller.getPassedArguments()[argIdx];
+    auto passedArgs{caller.getPassedArguments()};
+    const auto &arg{passedArgsflang[argIdx]};
     return arg.passBy == PassBy::Value ||
            arg.passBy == PassBy::BaseAddressValueAttribute;
   }


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