https://gcc.gnu.org/g:1a4aff76a2b104ff0b103c685b6c2ce8006fe6bb
commit r15-9020-g1a4aff76a2b104ff0b103c685b6c2ce8006fe6bb
Author: Jakub Jelinek <ja...@redhat.com>
Date: Sat Mar 29 00:49:27 2025 +0100
testsuite: Fix up musttail2.C test
On Wed, Mar 26, 2025 at 10:10:07AM -0700, Andi Kleen wrote:
> I think this needs to be target external_tailcall, otherwise you will
> fail on targets that don't support that.
>
> Or alternatively make this not extern.
You're right (although I don't remember which targets are
non-external_musttail).
Here is a patch to define the function.
2025-03-28 Jakub Jelinek <ja...@redhat.com>
* g++.dg/opt/musttail2.C (foo): Define the function instead of
just declaring it, add [[gnu::noipa]] attribute to it.
Diff:
---
gcc/testsuite/g++.dg/opt/musttail2.C | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/g++.dg/opt/musttail2.C
b/gcc/testsuite/g++.dg/opt/musttail2.C
index ee55c1a18df1..d12fcb2e397d 100644
--- a/gcc/testsuite/g++.dg/opt/musttail2.C
+++ b/gcc/testsuite/g++.dg/opt/musttail2.C
@@ -4,7 +4,12 @@
// { dg-final { scan-tree-dump-times " \[^\n\r]* = foo \\\(\[^\n\r]*\\\);
\\\[tail call\\\] \\\[must tail call\\\]" 1 "optimized" } }
struct S { S () {} };
-char *foo (S);
+
+[[gnu::noipa]] char *
+foo (S)
+{
+ return 0;
+}
char *
bar (S)
