Your message dated Sun, 28 Jul 2024 15:35:35 +0000
with message-id <e1sy5vr-00f0o3...@fasolo.debian.org>
and subject line Bug#1076503: Removed package(s) from unstable
has caused the Debian Bug report #976024,
regarding g++-10 crashes for bitpacked enum class
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)


-- 
976024: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976024
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: g++-10
Version: 10.2.0-16
Severity: normal
Tags: upstream

Dear Maintainer,

* What led up to the situation?

Compiling the following code crashes g++-10:

    // g++-10 -std=c++2a -o /tmp/example.cpp.o -c example.cpp
    enum class MyEnumClass { A };
    struct MyClass {
        MyEnumClass foobar : 8 { MyEnumClass::A };
    };
    bool some_function(MyClass x)
    {
        switch (x.foobar) {
        case MyEnumClass::A:
            return false;
        }
    }

See at the bottom the exact invocation, error messages, and g++ version.

This bug is a regression: g++-9 does *not* crash when compiling the above code.

* What exactly did you do (or not do) that was effective (or
  ineffective)?

The enum-class, bit-packing, seemingly incomplete switch-case, non-constant
switch-argument, all seem to be necessary to trigger the bug.

* What was the outcome of this action?

Compiler crash (error message see below)

* What outcome did you expect instead?

Either a successful compilation, or a compilation error; but not a compiler
crash.


Full error message and versions:

$ /usr/bin/g++-10 -std=c++2a -o /tmp/example.cpp.o -c example.cpp
example.cpp: In function ‘bool some_function(MyClass)’:
example.cpp:6:6: error: type precision mismatch in switch statement
    6 | bool some_function(MyClass x)
      |      ^~~~~~~~~~~~~
switch (_1) <default: <D.2095>, case 0: <D.2092>>
example.cpp:6:6: internal compiler error: ‘verify_gimple’ failed
0x128422d verify_gimple_in_seq(gimple*)
        ../../src/gcc/tree-cfg.c:5144
0xf85436 gimplify_body(tree_node*, bool)
        ../../src/gcc/gimplify.c:14888
0xf856a3 gimplify_function_tree(tree_node*)
        ../../src/gcc/gimplify.c:14978
0xdbbe27 cgraph_node::analyze()
        ../../src/gcc/cgraphunit.c:670
0xdbee27 analyze_functions
        ../../src/gcc/cgraphunit.c:1227
0xdbf9f2 symbol_table::finalize_compilation_unit()
        ../../src/gcc/cgraphunit.c:2986
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions.

$ /usr/bin/g++-10 --version
g++-10 (Debian 10.2.0-16) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ /usr/bin/g++-9 -std=c++2a -o /tmp/example.cpp.o -c example.cpp
example.cpp: In function ‘bool some_function(MyClass)’:
example.cpp:12:1: warning: control reaches end of non-void function [-Wreturn-
type]
   12 | }
      | ^

$ /usr/bin/g++-9 --version
g++-9 (Debian 9.3.0-18) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ uname -a
Linux home 5.8.0-1-amd64 #1 SMP Debian 5.8.7-1 (2020-09-05) x86_64 GNU/Linux



-- System Information:
Debian Release: bullseye/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), 
(500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.8.0-1-amd64 (SMP w/4 CPU threads)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages g++-10 depends on:
ii  gcc-10            10.2.0-16
ii  gcc-10-base       10.2.0-16
ii  libc6             2.31-4
ii  libgmp10          2:6.2.0+dfsg-6
ii  libisl22          0.22.1-1
ii  libmpc3           1.2.0-1
ii  libmpfr6          4.1.0-3
ii  libstdc++-10-dev  10.2.0-16
ii  libzstd1          1.4.5+dfsg-4
ii  zlib1g            1:1.2.11.dfsg-2

g++-10 recommends no packages.

Versions of packages g++-10 suggests:
pn  g++-10-multilib  <none>
pn  gcc-10-doc       <none>

-- no debconf information

--- End Message ---
--- Begin Message ---
Version: 10.5.0-4+rm

Dear submitter,

as the package gcc-10 has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/1076503

The version of this package that was in Debian prior to this removal
can still be found using https://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmas...@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Scott Kitterman (the ftpmaster behind the curtain)

--- End Message ---

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