[Bug 30030] New: [r300g, bisected] Crash in loop_control_visitor::visit_leave(ir_loop*) ()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30030

           Summary: [r300g, bisected] Crash in
                    loop_control_visitor::visit_leave(ir_loop*) ()
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: Magnus.Kessler at gmx.net


Since commit 8df2dbf91ddfd0c1590e33015e85470b67e69319 the OpenSceneGraph based
fgfs (flightgear) crashes in loop_control_visitor::visit_leave(ir_loop*) ()
with the following backtrace:

#0  0x00007f920dc15785 in *__GI_raise (sig=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007f920dc16c06 in *__GI_abort () at abort.c:92
#2  0x00007f920dc0e305 in *__GI___assert_fail (
    assertion=0x7f920b875c89 "ls != __null", file=<value optimized out>, 
    line=177, function=<value optimized out>) at assert.c:81
#3  0x00007f920b6ddb6f in loop_control_visitor::visit_leave(ir_loop*) ()
   from /usr/lib64/dri/r300_dri.so
#4  0x00007f920b6ceb48 in visit_list_elements(ir_hierarchical_visitor*,
exec_list*) () from /usr/lib64/dri/r300_dri.so
#5  0x00007f920b6cf4ff in ir_if::accept(ir_hierarchical_visitor*) ()
   from /usr/lib64/dri/r300_dri.so
#6  0x00007f920b6ceb48 in visit_list_elements(ir_hierarchical_visitor*,
exec_list*) () from /usr/lib64/dri/r300_dri.so
#7  0x00007f920b6ceced in
ir_function_signature::accept(ir_hierarchical_visitor*) () from
/usr/lib64/dri/r300_dri.so
#8  0x00007f920b6ceb48 in visit_list_elements(ir_hierarchical_visitor*,
exec_list*) () from /usr/lib64/dri/r300_dri.so
#9  0x00007f920b6ced5c in ir_function::accept(ir_hierarchical_visitor*) ()
   from /usr/lib64/dri/r300_dri.so
#10 0x00007f920b6ceb48 in visit_list_elements(ir_hierarchical_visitor*,
exec_list*) () from /usr/lib64/dri/r300_dri.so
#11 0x00007f920b6ddbd5 in set_loop_controls(exec_list*, loop_state*) ()
   from /usr/lib64/dri/r300_dri.so
#12 0x00007f920b6bfcce in do_common_optimization(exec_list*, bool) ()
   from /usr/lib64/dri/r300_dri.so
#13 0x00007f920b6dbe55 in link_shaders(__GLcontextRec*, gl_shader_program*) ()
   from /usr/lib64/dri/r300_dri.so
#14 0x00007f920b6a80ab in _mesa_glsl_link_shader ()
   from /usr/lib64/dri/r300_dri.so
#15 0x00007f920e852add in osg::Program::PerContextProgram::linkProgram (
    this=0x7f91ece190e0, state=<value optimized out>)
    at
/usr/src/debug/dev-games/openscenegraph-9999/openscenegraph-9999/src/osg/Program.cpp:518
#16 0x00007f920e851ca0 in osg::Program::apply (this=0x1044bcd0, state=...)
[...]

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