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[pushed] c++: Add fixed test [PR78244]

Message ID 20220429134011.32198-1-polacek@redhat.com
State New
Headers show
Series [pushed] c++: Add fixed test [PR78244] | expand

Commit Message

Marek Polacek April 29, 2022, 1:40 p.m. UTC 
This was finally fixed for GCC 11 by r11-434.

Tested x86_64-pc-linux-gnu, applying to trunk.

	PR c++/78244

gcc/testsuite/ChangeLog:

	* g++.dg/cpp0x/Wnarrowing20.C: New test.
---
 gcc/testsuite/g++.dg/cpp0x/Wnarrowing20.C | 26 +++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp0x/Wnarrowing20.C


base-commit: e1115a4f1b4afb346341237355186949f8e568a8
diff mbox series

Patch

diff --git a/gcc/testsuite/g++.dg/cpp0x/Wnarrowing20.C b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing20.C
new file mode 100644
index 00000000000..17a6001266d
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing20.C
@@ -0,0 +1,26 @@ 
+// PR c++/78244
+// { dg-do compile { target c++11 } }
+
+struct S { S(int); int d; };
+
+template <typename T>
+auto f1() -> decltype(S{2.0}, void()) { } // { dg-error "narrowing conversion" }
+
+template <typename T>
+auto f2() -> decltype(S{2.0}, 1) { return 1; } // { dg-error "narrowing conversion" }
+
+template <typename T>
+auto f3() -> decltype(void(), S{2.0}, 1) { return 1; } // { dg-error "narrowing conversion" }
+
+template <typename T>
+auto f4() -> decltype((S{2.0}, 1)) { return 1; } // { dg-error "narrowing conversion" }
+
+// Test OVERLOAD in a template.
+int id(int v) { return v; }
+double id(double v) { return v; }
+
+template <typename T>
+auto f5(double v) -> decltype((S{id(v)}, 1)) { return 1; } // { dg-error "narrowing conversion" }
+
+template <typename T>
+auto f6(int v) -> decltype((S{id(v)}, 1)) { return 1; }