gcc-16-20251214 testsuite results for ia64

[Frank Scheiner]

On 07.01.26 14:10, Jonathan Wakely wrote:
> On Wed, 7 Jan 2026 at 12:58, Frank Scheiner wrote:
>>
>>         === libstdc++ Summary ===
>>
>> # of expected passes            18162   19243
>> # of unexpected failures        9       245
>> # of expected failures          131     140
>> # of unresolved testcases       2
>> # of unsupported tests          740     786
>> ```
>>
>> Overall this looks like an improvement to me. Although the number of
>> unexpected failures for libstdc++ increased dramatically. But the number
>> of expected passes - where they increased - increased more than the
>> number of failures.
> 
> Is there a pattern to the unexpected failures? Are they all in a
> particular part of the library? Are they compilation failures? ICEs?
> failed assertions in the tests at runtime?

I also looked into the details for:

* libstdc++ (FAIL also present for GCC 15.1.0, but might be relevant)
* 18_support
* 19_diagnostics

...so far.

In the following the failing test and the related error/info message
below:

```
FAIL: libstdc++-abi/abi_check
=>
[...] ## more info about symbols available
# of added symbols:              148
# of missing symbols:            0
# of undesignated symbols:       2
# of incompatible symbols:       112

FAIL: 18_support/bad_alloc/cons_virtual_derivation.cc  -std=gnu++17 execution test
=>
'__gnu_test::diamond_derivation_base<std::bad_alloc, true>::diamond_derivation_error'

FAIL: 18_support/bad_cast/cons_virtual_derivation.cc  -std=gnu++17 execution test
=>
'__gnu_test::diamond_derivation_base<std::bad_cast, true>::diamond_derivation_error'

FAIL: 18_support/bad_exception/cons_virtual_derivation.cc  -std=gnu++17 execution test
=>
'__gnu_test::diamond_derivation_base<std::bad_exception, true>::diamond_derivation_error'

FAIL: 18_support/bad_typeid/cons_virtual_derivation.cc  -std=gnu++17 execution test
=>
'__gnu_test::diamond_derivation_base<std::bad_typeid, true>::diamond_derivation_error'

FAIL: 18_support/nested_exception/rethrow_if_nested.cc  -std=gnu++17 execution test
=>
no error shown, maybe timed out

FAIL: 19_diagnostics/logic_error/cons_virtual_derivation.cc  -std=gnu++17 execution test
=>
'__gnu_test::diamond_derivation_base<std::logic_error, false>::diamond_derivation_error'

FAIL: 19_diagnostics/runtime_error/cons_virtual_derivation.cc  -std=gnu++17 execution test
=>
'__gnu_test::diamond_derivation_base<std::runtime_error, false>::diamond_derivation_error'

FAIL: 19_diagnostics/stacktrace/stacktrace.cc  -std=gnu++26 execution test
=>
/dev/shm/gcc-16-20251214/libstdc++-v3/testsuite/19_diagnostics/stacktrace/stacktrace.cc:313: void test_assign(): Assertion 's0.at(0).source_line() == s0.get_allocator().get_personality()' failed.

FAIL: 19_diagnostics/system_error/cons_virtual_derivation.cc  -std=gnu++17 execution test
=>
'__gnu_test::diamond_derivation_base<std::system_error, true>::diamond_derivation_error'
```

Cheers,
Frank