Regressions on native/releases/gcc-14 at commit r14-11853 vs commit r14-11845 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on releases/gcc-14 at commit r14-11853 vs commit r14-11845 on 
Linux/x86_64
New failures:
FAIL: 27_io/basic_istream/ignore/wchar_t/94749.cc  -std=gnu++17 execution test
FAIL: c-c++-common/tsan/pr65400-3.c   -O0  output pattern test
FAIL: c-c++-common/tsan/pr65400-3.c   -O2  output pattern test
FAIL: c-c++-common/tsan/pr68260.c   -O0  execution test
FAIL: c-c++-common/tsan/pr68260.c   -O2  execution test
FAIL: c-c++-common/tsan/race_on_barrier2.c   -O0  output pattern test
FAIL: c-c++-common/tsan/race_on_barrier.c   -O0  output pattern test
FAIL: c-c++-common/tsan/race_on_barrier.c   -O2  output pattern test
FAIL: c-c++-common/tsan/race_on_mutex2.c   -O2  output pattern test
FAIL: c-c++-common/tsan/race_on_mutex.c   -O0  output pattern test
FAIL: c-c++-common/tsan/race_on_mutex.c   -O2  output pattern test
FAIL: c-c++-common/tsan/thread_leak1.c   -O0  output pattern test
FAIL: c-c++-common/tsan/thread_leak1.c   -O2  output pattern test
FAIL: c-c++-common/tsan/thread_leak2.c   -O2  output pattern test
FAIL: c-c++-common/tsan/volatile.c   -O0  execution test
FAIL: c-c++-common/tsan/volatile.c   -O2  execution test

New passes:
FAIL: c-c++-common/tsan/atomic_stack.c   -O0  output pattern test
FAIL: c-c++-common/tsan/atomic_stack.c   -O2  output pattern test
FAIL: c-c++-common/tsan/bitfield_race.c   -O0  output pattern test
FAIL: c-c++-common/tsan/fd_pipe_race.c   -O2  output pattern test
FAIL: c-c++-common/tsan/free_race2.c   -O0  output pattern test
FAIL: c-c++-common/tsan/free_race2.c   -O2  output pattern test
FAIL: c-c++-common/tsan/free_race.c   -O0  output pattern test
FAIL: c-c++-common/tsan/mutexset1.c   -O0  output pattern test
FAIL: c-c++-common/tsan/mutexset1.c   -O2  output pattern test
FAIL: c-c++-common/tsan/simple_stack.c   -O2  output pattern test
FAIL: c-c++-common/tsan/thread_leak2.c   -O0  output pattern test
FAIL: c-c++-common/tsan/thread_leak.c   -O0  execution test
FAIL: c-c++-common/tsan/tiny_race.c   -O0  output pattern test
FAIL: c-c++-common/tsan/tls_race.c   -O2  output pattern test
FAIL: c-c++-common/tsan/write_in_reader_lock.c   -O0  output pattern test

[Linaro-TCWG-CI] gcc-16-1565-g2dcc6dbd8a00: 5 regressions on aarch64

[ci_notify--- via Gcc-regression]

Dear contributor,

Our automatic CI has detected problems related to your patch(es). Please find 
some details below.

In gcc_check master-aarch64, after:
  | commit gcc-16-1565-g2dcc6dbd8a00
  | Author: Dimitar Dimitrov 
  | Date:   Mon Jun 2 08:10:16 2025 +0300
  | 
  | emit-rtl: Use simplify_subreg_regno to validate hardware subregs 
[PR119966]
  | 
  | PR119966 showed that combine could generate unfoldable hardware subregs
  | for pru-unknown-elf.  To fix, strengthen the checks performed by
  | validate_subreg.
  | ... 47 lines of the commit log omitted.

Produces 5 regressions:
  | 
  | regressions.sum:
  | Running gcc:gcc.c-torture/compile/compile.exp ...
  | FAIL: gcc.c-torture/compile/pass.c -O3 -g  (internal compiler error: 
Segmentation fault)
  | FAIL: gcc.c-torture/compile/pass.c -O3 -g  (test for excess errors)
  | Running libgomp:libgomp.fortran/fortran.exp ...
  | FAIL: libgomp.fortran/stack.f90 -O3 -g  (internal compiler error: 
Segmentation fault)
  | ... and 2 more

Used configuration :
 *CI config* tcwg_gcc_check master-aarch64
 *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu

We track this bug report under https://linaro.atlassian.net/browse/GNU-1609. 
Please let us know if you have a fix.

If you have any questions regarding this report, please ask on 
linaro-toolch...@lists.linaro.org mailing list.

-8<--8<--8<--

The information below contains the details of the failures, and the ways to 
reproduce a debug environment:

You can find the failure logs in *.log.1.xz files in
 * 
https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3878/artifact/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make 
commands are in
 * 
https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3878/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * 
https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3878/artifact/artifacts/sumfiles/xfails.xfail

Current build   : 
https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3878/artifact/artifacts
Reference build : 
https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3877/artifact/artifacts

Instruction to reproduce the build : 
https://gitlab.com/Linaro/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/2dcc6dbd8a00caf7cfa8cac17b3fd1c33d658016/tcwg_gcc_check/master-aarch64/reproduction_instructions.txt

Full commit : See in git+ssh://linar...@gcc.gnu.org/git/gcc.git