[Bug 1439451] [NEW] std::uncaught_exception() returns true after catching an exception thrown with std::rethrow_exception

[Chris Halse Rogers]

Public bug reported:

See attached testcase.

On debugging, it seems that std::rethrow_exception isn't incrementing
__cxa_get_globals()->uncaughtExceptions, so when the exception is caught
it's decremented from 0 to MAXINT.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: libstdc++6 4.9.2-10ubuntu12
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Uname: Linux 3.19.0-10-generic x86_64
ApportVersion: 2.17-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Apr  2 10:50:37 2015
Dependencies:
 gcc-4.9-base 4.9.2-10ubuntu12
 gcc-5-base 5-20150328-0ubuntu2
 libc6 2.21-0ubuntu4
 libgcc1 1:5-20150328-0ubuntu2
 multiarch-support 2.21-0ubuntu4
InstallationDate: Installed on 2013-08-06 (603 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: gcc-4.9
UpgradeStatus: Upgraded to vivid on 2013-08-06 (603 days ago)

** Affects: gcc-4.9 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

** Attachment added: "Testcase"
   https://bugs.launchpad.net/bugs/1439451/+attachment/4363638/+files/i_will_destroy_you.cpp

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https://bugs.launchpad.net/bugs/1439451

Title:
  std::uncaught_exception() returns true after catching an exception
  thrown with std::rethrow_exception

Status in gcc-4.9 package in Ubuntu:
  New

Bug description:
  See attached testcase.

  On debugging, it seems that std::rethrow_exception isn't incrementing
  __cxa_get_globals()->uncaughtExceptions, so when the exception is
  caught it's decremented from 0 to MAXINT.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: libstdc++6 4.9.2-10ubuntu12
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Apr  2 10:50:37 2015
  Dependencies:
   gcc-4.9-base 4.9.2-10ubuntu12
   gcc-5-base 5-20150328-0ubuntu2
   libc6 2.21-0ubuntu4
   libgcc1 1:5-20150328-0ubuntu2
   multiarch-support 2.21-0ubuntu4
  InstallationDate: Installed on 2013-08-06 (603 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  SourcePackage: gcc-4.9
  UpgradeStatus: Upgraded to vivid on 2013-08-06 (603 days ago)

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