Hi,
Thanks for the report,
After investigation it seems the location of the new dejagnu directive for
C++ differs depending on the configuration.
The expected warning is still emitted, but its location differ slightly.
I expect it to be not an issue per se of the analyzer, but a divergence in
the FE between the two configurations.
Need further investigation.
Best,
Benjamin.
On Mon, Sep 11, 2023 at 10:03 AM Jiang, Haochen <haochen.ji...@intel.com>
wrote:
> On Linux/x86_64,
>
> 50b5199cff690891726877e1c00ac53dfb7cc1c8 is the first bad commit
> commit 50b5199cff690891726877e1c00ac53dfb7cc1c8
> Author: benjamin priour <vultk...@gcc.gnu.org>
> Date: Sat Sep 9 18:03:56 2023 +0200
>
> analyzer: Move gcc.dg/analyzer tests to c-c++-common (2) [PR96395]
>
> caused
>
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++14 (test for
> excess errors)
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++14 (test for
> warnings, line 72)
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++17 (test for
> excess errors)
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++17 (test for
> warnings, line 72)
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++20 (test for
> excess errors)
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++20 (test for
> warnings, line 72)
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++98 (test for
> excess errors)
> FAIL: c-c++-common/analyzer/compound-assignment-1.c -std=c++98 (test for
> warnings, line 72)
>
> with GCC configured with
>
> ../../gcc/configure
> --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-3823/usr
> --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
> --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet
> --without-isl --enable-libmpx x86_64-linux --disable-bootstrap
>
> To reproduce:
>
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="analyzer.exp=c-c++-common/analyzer/compound-assignment-1.c
> --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="analyzer.exp=c-c++-common/analyzer/compound-assignment-1.c
> --target_board='unix{-m32\ -march=cascadelake}'"
>
> (If you met problems with cascadelake related, disabling AVX512F in
> command line might save that.)
> (However, please make sure that there is no potential problems with
> AVX512.)
>
