r229918 - Itanium ABI: Pack expansions change the arity of expressions to unknown
David Majnemer
david.majnemer at gmail.com
Thu Feb 19 13:41:48 PST 2015
Author: majnemer
Date: Thu Feb 19 15:41:48 2015
New Revision: 229918
URL: http://llvm.org/viewvc/llvm-project?rev=229918&view=rev
Log:
Itanium ABI: Pack expansions change the arity of expressions to unknown
Modified:
cfe/trunk/lib/AST/ItaniumMangle.cpp
cfe/trunk/test/CodeGenCXX/mangle.cpp
Modified: cfe/trunk/lib/AST/ItaniumMangle.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ItaniumMangle.cpp?rev=229918&r1=229917&r2=229918&view=diff
==============================================================================
--- cfe/trunk/lib/AST/ItaniumMangle.cpp (original)
+++ cfe/trunk/lib/AST/ItaniumMangle.cpp Thu Feb 19 15:41:48 2015
@@ -2796,9 +2796,14 @@ recurse:
Out << "cl";
}
- mangleExpression(CE->getCallee(), CE->getNumArgs());
- for (unsigned I = 0, N = CE->getNumArgs(); I != N; ++I)
- mangleExpression(CE->getArg(I));
+ unsigned CallArity = CE->getNumArgs();
+ for (const Expr *Arg : CE->arguments())
+ if (isa<PackExpansionExpr>(Arg))
+ CallArity = UnknownArity;
+
+ mangleExpression(CE->getCallee(), CallArity);
+ for (const Expr *Arg : CE->arguments())
+ mangleExpression(Arg);
Out << 'E';
break;
}
Modified: cfe/trunk/test/CodeGenCXX/mangle.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/mangle.cpp?rev=229918&r1=229917&r2=229918&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCXX/mangle.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/mangle.cpp Thu Feb 19 15:41:48 2015
@@ -1062,3 +1062,12 @@ namespace test51 {
// CHECK-LABEL: @_ZN6test514fun7INS_1EEEEDTcldtcvS1__Esr1EEdnT_EEv
template void fun8<X>();
}
+
+namespace test52 {
+struct X {};
+void operator+(X);
+template <typename... T>
+auto f4(T... x) -> decltype(operator+(x...));
+// CHECK-LABEL: @_ZN6test522f4IJNS_1XEEEEDTclonplspfp_EEDpT_
+void use() { f4(X{}); }
+}
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