[Mesa-dev] [Bug 85199] New: glxinfo segfaults when mesa was compiled with clang & libc++

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Oct 19 07:54:33 PDT 2014


            Bug ID: 85199
           Summary: glxinfo segfaults when mesa was compiled with clang &
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: GLX
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: woskimi at yahoo.de

Created attachment 108064
  --> https://bugs.freedesktop.org/attachment.cgi?id=108064&action=edit
strace glxinfo

$ glxinfo
name of display: :0
Segmentation fault

$ glxinfo -i
name of display: :0
X Error of failed request:  BadValue (integer parameter out of range for
  Major opcode of failed request:  154 (GLX)
  Minor opcode of failed request:  24 (X_GLXCreateNewContext)
  Value in failed request:  0x0
  Serial number of failed request:  40
  Current serial number in output stream:  43

I don't know anything about what happens, but I know that this crash happens
only when mesa was compiled with clang (from git) against libc++.
Building clang and mesa against libstdc++ with otherwise the same build config
does not produce the crash.

I originally stumbled upon this issue because kwin was always crashing with
OpenGL enabled.

thx for your time.

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