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authorJonathan Wakely <jwakely@redhat.com>2023-09-14 09:18:34 +0100
committerJonathan Wakely <jwakely@redhat.com>2023-09-14 14:26:03 +0100
commit557a858f2ead4ae8b64b157d7fd33830a81646d5 (patch)
tree0ea54b38e369656c15f0cae547b0dcbb47fe47fb
parent9da3c935e3f46e32d9f801f07916634dc9a65886 (diff)
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libstdc++: Add testcase for std::make_integer_sequence bug [PR111357]
The compiler bug has been fixed on trunk, but this adds a regression test for the library component. libstdc++-v3/ChangeLog: PR c++/111357 * testsuite/20_util/integer_sequence/pr111357.cc: New test.
-rw-r--r--libstdc++-v3/testsuite/20_util/integer_sequence/pr111357.cc34
1 files changed, 34 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/integer_sequence/pr111357.cc b/libstdc++-v3/testsuite/20_util/integer_sequence/pr111357.cc
new file mode 100644
index 0000000..1ad06b7
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/integer_sequence/pr111357.cc
@@ -0,0 +1,34 @@
+// { dg-do compile { target c++14 } }
+
+// PR c++/111357 - __integer_pack fails to work with values of dependent type
+// convertible to integers in noexcept context
+
+#include <utility>
+
+using std::integer_sequence;
+using std::make_integer_sequence;
+
+template<int... V>
+void g(integer_sequence<int,V...>)
+{}
+
+template<typename ...T>
+struct c1
+{
+ static constexpr int value = 1;
+ constexpr operator int() { return value; }
+};
+
+template<typename T>
+struct R
+{
+ using S = make_integer_sequence<int,c1<T>{}>;
+
+ R() noexcept(noexcept(g(S()))) // { dg-bogus "argument to .__integer_pack." }
+ {}
+};
+
+int main()
+{
+ R<int>();
+}