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* [Bug libstdc++/106581] New: [Aarch64] libstdc++ segfault at end of execution
@ 2022-08-10 21:18 lancethepants at gmail dot com
  2022-08-10 21:47 ` [Bug libstdc++/106581] " pinskia at gcc dot gnu.org
                   ` (12 more replies)
  0 siblings, 13 replies; 14+ messages in thread
From: lancethepants at gmail dot com @ 2022-08-10 21:18 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106581

            Bug ID: 106581
           Summary: [Aarch64] libstdc++ segfault at end of execution
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: lancethepants at gmail dot com
  Target Milestone: ---

aarch64
linux 4.1.51
GCC 12.1
uclibc-ng 1.0.41

All dynamically linked c++ executables will segfault.  Some executables will
run then segfault, some just segfault.  I think there are couple segfaulting
issues, but this is the first one to address I think. GCC 10 & 11 don't
segfault at the end of execution if they don't segfault for some other reason. 
Static linked binaries don't segfault at the end of execution using either
'-static' for fully static binary or '-static-libstdc++' to static link just
libstdc++.

Here is a backtrace of segfaulting 'hello world' c++ binary

admin@RT-AX88U-6860:~/src/hello.src# /opt/bin/gdb ./hello
GNU gdb (GDB) 11.2
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "aarch64-openwrt-linux".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./hello...
(gdb) run
Starting program: /mmc/src/hello.src/hello
warning: Unable to determine the number of hardware watchpoints available.
warning: Unable to determine the number of hardware breakpoints available.
warning: File "/mmc/lib/libthread_db-1.0.41.so" auto-loading has been declined
by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
        add-auto-load-safe-path /mmc/lib/libthread_db-1.0.41.so
line to your configuration file "/mmc/.config/gdb/gdbinit".
To completely disable this security protection add
        set auto-load safe-path /
line to your configuration file "/mmc/.config/gdb/gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
        info "(gdb)Auto-loading safe path"
warning: Unable to find libthread_db matching inferior's thread library, thread
debugging will not be available.
Hello, World from C++!

Program received signal SIGSEGV, Segmentation fault.
std::uncaught_exception () at
../../../../libstdc++-v3/libsupc++/eh_catch.cc:141
141     ../../../../libstdc++-v3/libsupc++/eh_catch.cc: No such file or
directory.
(gdb) backtrace
#0  std::uncaught_exception () at
../../../../libstdc++-v3/libsupc++/eh_catch.cc:141
#1  0x0000007fb7f0bd30 in std::ostream::sentry::~sentry (this=0x7ffffff340,
__in_chrg=<optimized out>)
    at
/home/lance/tomatoware/toolchain/buildroot-git/output/build/host-gcc-final-12.1.0/build/aarch64-tomatoware-linux-uclibc/libstdc++-v3/include/ostream:466
#2  0x0000007fb7f0bde4 in std::ostream::flush (this=0x7fb7fe4f48 <std::cerr>)
    at
/home/lance/tomatoware/toolchain/buildroot-git/output/build/host-gcc-final-12.1.0/build/aarch64-tomatoware-linux-uclibc/libstdc++-v3/include/bits/ostream.tcc:245
#3  0x0000007fb7ebbc40 in std::ios_base::Init::~Init (this=<optimized out>,
__in_chrg=<optimized out>) at
../../../../../libstdc++-v3/src/c++98/ios_init.cc:135
#4  0x0000007fb7d401b8 in __exit_handler (status=0) at
libc/stdlib/_atexit.c:263
#5  0x0000007fb7d402b8 in __GI_exit (rv=0) at libc/stdlib/_atexit.c:301
#6  0x0000007fb7d46134 in __uClibc_main (main=0x55555559d4 <main()>, argc=1,
argv=0x7ffffff598, app_init=0x55555557d8 <_init>, app_fini=0x5555555a78
<_fini>, rtld_fini=0x7fb7fe94f0 <_dl_fini>, stack_end=0x7ffffff590)
    at libc/misc/internals/__uClibc_main.c:552
#7  0x00000055555558c4 in _start () at libc/sysdeps/linux/aarch64/crt1.S:92
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

^ permalink raw reply	[flat|nested] 14+ messages in thread
end of thread, other threads:[~2022-11-30 21:53 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-08-10 21:18 [Bug libstdc++/106581] New: [Aarch64] libstdc++ segfault at end of execution lancethepants at gmail dot com
2022-08-10 21:47 ` [Bug libstdc++/106581] " pinskia at gcc dot gnu.org
2022-08-10 22:03 ` lancethepants at gmail dot com
2022-08-10 22:05 ` pinskia at gcc dot gnu.org
2022-08-10 22:11 ` lancethepants at gmail dot com
2022-08-10 22:14 ` pinskia at gcc dot gnu.org
2022-08-10 22:15 ` lancethepants at gmail dot com
2022-08-10 22:17 ` pinskia at gcc dot gnu.org
2022-08-10 22:27 ` lancethepants at gmail dot com
2022-08-10 22:33 ` pinskia at gcc dot gnu.org
2022-08-10 22:35 ` lancethepants at gmail dot com
2022-08-10 22:41 ` [Bug target/106581] " pinskia at gcc dot gnu.org
2022-08-10 22:49 ` lancethepants at gmail dot com
2022-11-30 21:53 ` pinskia at gcc dot gnu.org

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