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A number of valgrind errors #220

Description

@deepfire
Game: /nix/store/d4qb15n9kycxbbngwnnngl6xzjf0nc8s-glxinfo-8.3.0/bin/glxinfo

Tracefile: glxinfo.bin
Logfile: /tmp/vogltrace.glxinfo.2017_03_19-05_44_19.log (will have PID appended)
==32397== Conditional jump or move depends on uninitialised value(s)
==32397==    at 0x4C2D820: rindex (in /nix/store/j6575j2yywgbymdr3pbnz9b5caa6jyz0-valgrind-3.12
.0/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==32397==    by 0x6879C26: dirname (in /nix/store/68sa3m89shpfaqq1b9xp5p1360vqhwx6-glibc-2.25/l
ib/libc-2.25.so)
==32397==    by 0x4273CD: tool_trace_mode(vogl::vector<vogl::command_line_param_desc>*) (in /ni
x/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/bin/vogl64)
==32397==    by 0x406A6D: main (in /nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/
bin/vogl64)
==32397==
==32397== Conditional jump or move depends on uninitialised value(s)
==32397==    at 0x6879C2A: dirname (in /nix/store/68sa3m89shpfaqq1b9xp5p1360vqhwx6-glibc-2.25/l
ib/libc-2.25.so)
==32397==    by 0x4273CD: tool_trace_mode(vogl::vector<vogl::command_line_param_desc>*) (in /ni
x/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/bin/vogl64)
==32397==    by 0x406A6D: main (in /nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/
bin/vogl64)
==32397==
==32397== Conditional jump or move depends on uninitialised value(s)
==32397==    at 0x6879C2F: dirname (in /nix/store/68sa3m89shpfaqq1b9xp5p1360vqhwx6-glibc-2.25/l
ib/libc-2.25.so)
==32397==    by 0x4273CD: tool_trace_mode(vogl::vector<vogl::command_line_param_desc>*) (in /ni
x/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/bin/vogl64)
==32397==    by 0x406A6D: main (in /nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/
bin/vogl64)
==32397==
==32397== Use of uninitialised value of size 8
==32397==    at 0x6879C31: dirname (in /nix/store/68sa3m89shpfaqq1b9xp5p1360vqhwx6-glibc-2.25/l
ib/libc-2.25.so)
==32397==    by 0x4273CD: tool_trace_mode(vogl::vector<vogl::command_line_param_desc>*) (in /ni
x/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/bin/vogl64)
==32397==    by 0x406A6D: main (in /nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/
bin/vogl64)
==32397==
==32397== Use of uninitialised value of size 8
==32397==    at 0x6879C50: dirname (in /nix/store/68sa3m89shpfaqq1b9xp5p1360vqhwx6-glibc-2.25/l
ib/libc-2.25.so)
==32397==    by 0x4273CD: tool_trace_mode(vogl::vector<vogl::command_line_param_desc>*) (in /ni
x/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/bin/vogl64)
==32397==    by 0x406A6D: main (in /nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/
bin/vogl64)
==32397==
==32397== Use of uninitialised value of size 8
==32397==    at 0x6879C81: dirname (in /nix/store/68sa3m89shpfaqq1b9xp5p1360vqhwx6-glibc-2.25/l
ib/libc-2.25.so)
==32397==    by 0x4273CD: tool_trace_mode(vogl::vector<vogl::command_line_param_desc>*) (in /ni
x/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/bin/vogl64)
==32397==    by 0x406A6D: main (in /nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/
bin/vogl64)
==32397==

LD_PRELOAD="/nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05-13/bin/libvogltrace64.so:$
LD_PRELOAD"

VOGL_CMD_LINE="--vogl_tracefile glxinfo.bin --vogl_logfile /tmp/vogltrace.glxinfo.2017_03_19-05
_44_19.log"

launch string:
VOGL_CMD_LINE="--vogl_tracefile glxinfo.bin --vogl_logfile /tmp/vogltrace.glxinfo.2017_03_19-05_44_19.log" LD_PRELOAD="/nix/store/39zy0ghhwspl84afgfy7gravdh04i4y1-vogl-2016-05
-13/bin/libvogltrace64.so:$LD_PRELOAD"  /nix/store/d4qb15n9kycxbbngwnnngl6xzjf0nc8s-glxinfo-8.3
.0/bin/glxinfo
name of display: :1
Segmentation fault

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