[Bug 2058447] [NEW] Bug in transcoding wide chars

[Sergio Ĥlutĉin]

Public bug reported:

The following example throws an exception when using wide character
strings with Cyrillic characters.

    $ g++-9 -std=c++17 path.C && ./a.out 
    terminate called after throwing an instance of 'std::filesystem::__cxx11::filesystem_error'
      what():  filesystem error: Cannot convert character sequence: Invalid or incomplete multibyte or wide character

The error only appears with GCC version 9

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: g++-9 9.5.0-5ubuntu1
ProcVersionSignature: Ubuntu 6.8.0-7.7.1-lowlatency 6.8.0-rc3
Uname: Linux 6.8.0-7-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: MATE
Date: Wed Mar 20 11:08:05 2024
InstallationDate: Installed on 2022-04-28 (692 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
SourcePackage: gcc-9
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gcc-9 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug noble

** Attachment added: "path.C"
   https://bugs.launchpad.net/bugs/2058447/+attachment/5757424/+files/path.C

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https://bugs.launchpad.net/bugs/2058447

Title:
  Bug in transcoding wide chars

Status in gcc-9 package in Ubuntu:
  New

Bug description:
  The following example throws an exception when using wide character
  strings with Cyrillic characters.

      $ g++-9 -std=c++17 path.C && ./a.out 
      terminate called after throwing an instance of 'std::filesystem::__cxx11::filesystem_error'
        what():  filesystem error: Cannot convert character sequence: Invalid or incomplete multibyte or wide character

  The error only appears with GCC version 9

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: g++-9 9.5.0-5ubuntu1
  ProcVersionSignature: Ubuntu 6.8.0-7.7.1-lowlatency 6.8.0-rc3
  Uname: Linux 6.8.0-7-lowlatency x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.28.0-0ubuntu1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: MATE
  Date: Wed Mar 20 11:08:05 2024
  InstallationDate: Installed on 2022-04-28 (692 days ago)
  InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
  SourcePackage: gcc-9
  UpgradeStatus: No upgrade log present (probably fresh install)

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