[gcc r16-9441] testsuite, Darwin: Handle undefined symbols in pr97172-2 testcase.

https://gcc.gnu.org/g:e77fac2224dc50320bb4469725a6ea1d4dc25b50

commit r16-9441-ge77fac2224dc50320bb4469725a6ea1d4dc25b50
Author: Iain Sandoe <[email protected]>
Date:   Wed Jun 10 21:22:21 2026 +0100

    testsuite, Darwin: Handle undefined symbols in pr97172-2 testcase.
    
    Darwin's linker defaults to complaining about missing symbols, leading
    to a spurious fail of this testcase.  We can work around this by
    allowing undefined symbols to be considered as dynamically looked-up.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.dg/pr97172-2.c: Allow undefined symbols at link-time.
    
    Signed-off-by: Iain Sandoe <[email protected]>
    (cherry picked from commit 8aee4e0bbb53f06fbdbcfb0561d2cef28c7127c9)

Diff:
---
 gcc/testsuite/gcc.dg/pr97172-2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/gcc.dg/pr97172-2.c b/gcc/testsuite/gcc.dg/pr97172-2.c
index 99cc6c29ff40..61f05626ebea 100644
--- a/gcc/testsuite/gcc.dg/pr97172-2.c
+++ b/gcc/testsuite/gcc.dg/pr97172-2.c
@@ -2,6 +2,7 @@
    streams
    { dg-do link }
    { dg-options "-Wall -flto -fpic -shared" }
+   { dg-additional-options "-Wl,-undefined,dynamic_lookup" { target *-*-darwin* } }
    { dg-require-effective-target fpic }
    { dg-require-effective-target shared }
    { dg-require-effective-target lto } */