[gcc r17-503] libstdc++: Add call to test_format in std/time/clock/local/io.cc

[Jonathan Wakely]

https://gcc.gnu.org/g:534c08d174fa080902d5e30db0011bed52a24ac3

commit r17-503-g534c08d174fa080902d5e30db0011bed52a24ac3
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed May 13 20:48:42 2026 +0100

    libstdc++: Add call to test_format in std/time/clock/local/io.cc
    
    This function was defined but not being called at runtime.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/std/time/clock/local/io.cc: Call test_format.

Diff:
---
 libstdc++-v3/testsuite/std/time/clock/local/io.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libstdc++-v3/testsuite/std/time/clock/local/io.cc b/libstdc++-v3/testsuite/std/time/clock/local/io.cc
index 6efd81a87c2a..9774f59fc38f 100644
--- a/libstdc++-v3/testsuite/std/time/clock/local/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/local/io.cc
@@ -136,5 +136,6 @@ static_assert( ! ostream_insertable<std::chrono::local_time<D>> );
 int main()
 {
   test_ostream();
+  test_format();
   test_parse();
 }