[pushed] testsuite: update mangling
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Commit Message
Tested x86_64-pc-linux-gnu, applying to trunk.
-- 8< --
Since r14-6064-gc3f281a0c1ca50 this test was checking for the wrong
mangling, but it still passed on targets that support ABI compatibility
aliases. Let's avoid generating those aliases when checking mangling.
gcc/ChangeLog:
* common.opt: Add comment.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-explicit-inst1.C: Specify ABI v18.
* g++.dg/cpp2a/concepts-explicit-inst1a.C: New test.
---
gcc/common.opt | 1 +
.../g++.dg/cpp2a/concepts-explicit-inst1.C | 1 +
.../g++.dg/cpp2a/concepts-explicit-inst1a.C | 24 +++++++++++++++++++
3 files changed, 26 insertions(+)
create mode 100644 gcc/testsuite/g++.dg/cpp2a/concepts-explicit-inst1a.C
base-commit: 889341a897d3d2e9fb09de1a1c5e764a2c03424f
prerequisite-patch-id: 6f3182b395d62bae9a7b1930edc21d52611c328c
@@ -1020,6 +1020,7 @@ Driver Undocumented
;
; 19: Emits ABI tags if needed in structured binding mangled names.
; Ignores cv-quals on [[no_unique_object]] members.
+; Mangles constraints on function templates.
; Default in G++ 14.
;
; Additional positive integers will be assigned as new versions of
@@ -1,4 +1,5 @@
// { dg-do compile { target c++20 } }
+// { dg-additional-options "-fabi-version=18 -fabi-compat-version=18" }
// { dg-final { scan-assembler "_Z1gI1XEvT_" } }
// { dg-final { scan-assembler "_Z1gI1YEvT_" } }
// { dg-final { scan-assembler "_Z1gIiEvT_" } }
new file mode 100644
@@ -0,0 +1,24 @@
+// { dg-do compile { target c++20 } }
+// { dg-additional-options "-fabi-version=0 -fabi-compat-version=0" }
+// { dg-final { scan-assembler "_Z1gITk1C1YEvT_" } }
+// { dg-final { scan-assembler "_Z1gITk1D1XEvT_" } }
+// { dg-final { scan-assembler "_Z1gIiEvT_" } }
+
+template<typename T>
+ concept C = __is_class(T);
+
+template<typename T>
+ concept D = C<T> && __is_empty(T);
+
+struct X { };
+struct Y { int n; };
+
+template<typename T> void g(T) { } // #1
+template<C T> void g(T) { } // #2
+template<D T> void g(T) { } // #3
+
+template void g(int); // Instantiate #1
+template void g(X); // Instantitae #3
+template void g(Y); // Instantiate #2
+
+int main() { }