Hi,

aspectc++ fails to build in a test rebuild on at least amd64 and arm64 with
gcc-16/g++-16, but builds properly with gcc-15/g++-15. The severity of this
report will be raised before the forky release.

The full build log can be found at:
https://people.debian.org/~ema/gcc-16-rebuilds/output-1/aspectc++_arm64.build.xz

The last lines of the build log are at the end of this report.

To build with GCC 16, either set CC=gcc-16 CXX=g++-16 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++

Common build failures include unused (but set) variables, array subscripts
partly outside array bounds, and new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-16/porting_to.html

Please only close this issue after double-checking that the package can be
built correctly with GCC 16.

Please do not reassign this bug to another package. If a fix in another package
is required, then file a bug for the other package (or clone), and mark this
bug as blocked by the bug in the other package.

[...]



DIFF BETWEEN FILES 'dep/Test.ref.d' and 'dep/Test.d':

1,2c1,4
< Test.o: ../../../../tests/src/Test.cc /usr/include/stdc-predef.h \
<  ../../../../tests/src/trace.ah /usr/include/stdio.h \
---
4,7d5
<  /usr/include/features.h /usr/include/features-time64.h \
<  /usr/include/aarch64-linux-gnu/bits/wordsize.h \
<  /usr/include/aarch64-linux-gnu/bits/timesize.h \
<  /usr/include/aarch64-linux-gnu/sys/cdefs.h \
9,14c7
<  /usr/include/aarch64-linux-gnu/gnu/stubs.h \
<  /usr/include/aarch64-linux-gnu/gnu/stubs-lp64.h \
<  /usr/lib/gcc/aarch64-linux-gnu/16/include/stddef.h \
<  /usr/lib/gcc/aarch64-linux-gnu/16/include/stdarg.h \
<  /usr/include/aarch64-linux-gnu/bits/types.h \
<  /usr/include/aarch64-linux-gnu/bits/typesizes.h \
---
15a9,13
18,21d15
<  /usr/include/aarch64-linux-gnu/bits/types/__fpos64_t.h \
<  /usr/include/aarch64-linux-gnu/bits/types/__FILE.h \
<  /usr/include/aarch64-linux-gnu/bits/types/FILE.h \
<  /usr/include/aarch64-linux-gnu/bits/types/struct_FILE.h \
23,27c17,26
<  /usr/include/aarch64-linux-gnu/bits/stdio_lim.h \
<  /usr/include/aarch64-linux-gnu/bits/floatn.h \
<  /usr/include/aarch64-linux-gnu/bits/floatn-common.h \
<  ../../../../tests/src/Test.h \
<  ../../../../tests/src/../additional_includes/test_include.h
---
STDERR:
-------


make[1]: Leaving directory '/build/reproducible-path/aspectc++-2.5/Ag++'
dh_testdir
dh_testroot
dh_prep
dh_installdirs
dh_installchangelogs
dh_installdocs
dh_install -Xlicence_1_0.txt
dh_install: warning: Cannot find (any matches for) "Puma/lib/linux-release/libPuma.a" (tried in ., debian/tmp)

dh_install: warning: libpuma-dev missing files: Puma/lib/linux-release/libPuma.a
dh_install: error: missing files, aborting
make: *** [debian/rules:139: binary-arch] Error 255
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2

Hi Olaf, hi AspectC++ developers,

While testing AspectC++ with upcoming GCC 16, which now defaults to C++20,
it turned out that the compiler no longer builds cleanly under C++20.

The initial issue in Puma/src/scanner/CLexer.h (ambiguous operator== in C++20)
is already resolved in the latest SVN trunk (AspectC++-Project r8 / AspectC++
r1813), since Puma has been retired in favor of ACBase and ACModel.

However, running the test suite under C++20 triggered another compilation
failure in the DataFlowAnalysis test:

  main.cc:298:50: error: expected '>'
    298 | if (&increment_decrement_op < &global_pointer) {
        | ^

In C++20 (specifically P0846R0 / [temp.names] p2), an unqualified function name
immediately preceding '<' in an expression is parsed as initiating a template
argument list (<...>). Because increment_decrement_op is a function name,
both Clang and GCC parse the '<' as an opening angle bracket for a template
rather than a less-than comparison, resulting in a syntax error.

Wrapping the function pointer comparison in parentheses resolves the ambiguity
and restores clean compilation under C++20:

    if ((&increment_decrement_op) < (&global_pointer)) {

I have packaged SVN snapshot 2.5+svn20261003 for Debian, dropped the obsolete
Puma packages, and included this fix.

The patch file is directly available on Salsa at:
https://salsa.debian.org/debian/aspectc/-/raw/svn-snapshot-gcc16/debian/patches/cxx20-test-dataflowanalysis.patch

The full merge request on Salsa is here:
https://salsa.debian.org/debian/aspectc/-/merge_requests/2

Attached is the patch for DataFlowAnalysis against SVN r1834 for your review
and inclusion in the upstream repository.

Best regards,
Reinhard

We believe that the bug you reported is fixed in the latest version of
aspectc++, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1133428@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Reinhard Tartler <siretart@tauware.de> (supplier of updated aspectc++ package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 03 Oct 2026 20:15:33 -0400
Source: aspectc++
Architecture: source
Version: 1:2.5+svn20261003-1
Distribution: unstable
Urgency: medium
Maintainer: Reinhard Tartler <siretart@tauware.de>
Changed-By: Reinhard Tartler <siretart@tauware.de>
Closes: 1133428
Changes:
 aspectc++ (1:2.5+svn20261003-1) unstable; urgency=medium
 .
   * New upstream snapshot 2.5+svn20261003 (Closes: #1133428).
     - Drop obsolete Puma library (replaced upstream by ACBase and ACModel).
     - Drop libpuma-dev and libpuma-doc packages.
   * debian/control:
     - Drop libpuma-dev, libpuma-doc, and unused doxygen/graphviz build deps.
   * debian/rules:
     - Remove Puma compilation, weaving, and documentation targets.
     - Streamline build to compile AspectC++ and Ag++ directly.
   * debian/patches:
     - Drop llvm-21.1.8.patch (applied upstream).
     - Refresh float128.patch for DEP-3 compliance.
     - Add cxx20-test-dataflowanalysis.patch to fix C++20 syntax ambiguity.
   * debian/watch:
     - Add watch file v5 tracking upstream SVN trunk.
   * debian/get-orig-source.sh:
     - Remove script in favor of native uscan Subversion support.
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Files:
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