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t/04-nativecall/08-callbacks.t generates invalid reads under valgrind #5745

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p6rt opened this issue Oct 12, 2016 · 1 comment
Open

t/04-nativecall/08-callbacks.t generates invalid reads under valgrind #5745

p6rt opened this issue Oct 12, 2016 · 1 comment
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@p6rt
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p6rt commented Oct 12, 2016

Migrated from rt.perl.org#129860 (status was 'new')

Searchable as RT129860$

@p6rt
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p6rt commented Oct 12, 2016

From @dogbert17

When running valgrind on t/04-nativecall/08-callbacks.t, a number of invalid
reads are caught. Possibly it might be due to me running on a 32 bit VM.

Output from valgrind

============================================================================

This is Rakudo Perl 6 running in valgrind, a tool for debugging and
profiling programs.
Running a program in valgrind usually takes *a lot* more time than running
it directly,
so please be patient.
This Rakudo version is 2016.09.180.g.0.d.09178 built on MoarVM version
2016.09.46.geceb.429,
running on ubuntu (14.04.3.LTS.Trusty.Tahr) / linux (3.19.0.32.generic)



==988== Memcheck, a memory error detector
==988== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==988== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==988== Command​: /home/dogbert/repos/rakudo/install/bin/moar --full-cleanup
--execname=./perl6-valgrind-m
--libpath=/home/dogbert/repos/rakudo/install/share/nqp/lib --libpath=.
/home/dogbert/repos/rakudo/perl6.moarvm -Ilib t/04-nativecall/08-callbacks.t
==988==
1..8
ok 1 - simple callback
==988== Invalid read of size 4
==988== at 0x41CC6B6​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== Address 0xbee6fc34 is on thread 1's stack
==988== 12 bytes below stack pointer
==988==
==988== Invalid read of size 4
==988== at 0x41CC6C0​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== Address 0xbee6fc38 is on thread 1's stack
==988== 4 bytes below stack pointer
==988==
==988== Invalid read of size 4
==988== at 0x41CC6CB​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB429​: dcCallVoid (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B57B​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988== Address 0xbee6fc18 is on thread 1's stack
==988== 36 bytes below stack pointer
==988==
==988== Invalid read of size 4
==988== at 0x41CC6CD​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB429​: dcCallVoid (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B57B​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988== Address 0xbee6fc1c is on thread 1's stack
==988== 32 bytes below stack pointer
==988==
ok 2 - int callback argument
ok 3 - string callback argument
ok 4 - struct callback string argument
ok 5 - struct callback int argument
==988== Invalid read of size 8
==988== at 0x41CC6D4​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB4A5​: dcCallInt (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B615​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988== Address 0xbee6fc08 is on thread 1's stack
==988== 36 bytes below stack pointer
==988==
ok 6 - callback returned a float to C
==988== Invalid read of size 4
==988== at 0x41CC6CB​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB4A5​: dcCallInt (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B615​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988== Address 0xbee6fbf8 is on thread 1's stack
==988== 36 bytes below stack pointer
==988==
==988== Invalid read of size 4
==988== at 0x41CC6CD​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB4A5​: dcCallInt (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B615​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988== Address 0xbee6fbfc is on thread 1's stack
==988== 32 bytes below stack pointer
==988==
ok 7 - callback returned a string to C
ok 8 - callback returned a struct to C
==988==
==988== HEAP SUMMARY​:
==988== in use at exit​: 153,766 bytes in 4,656 blocks
==988== total heap usage​: 447,900 allocs, 443,244 frees, 120,151,371 bytes
allocated
==988==
==988== 4 bytes in 4 blocks are definitely lost in loss record 2 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41079BD​: MVM_malloc (alloc.h​:2)
==988== by 0x4108F43​: unmarshal_callback (nativecall_dyncall.c​:137)
==988== by 0x410ACCD​: MVM_nativecall_invoke (nativecall_dyncall.c​:556)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 8 bytes in 1 blocks are definitely lost in loss record 3 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x803072F​: ???
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB429​: dcCallVoid (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B57B​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 16 bytes in 1 blocks are definitely lost in loss record 4 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41A1DA0​: MVM_malloc (alloc.h​:2)
==988== by 0x41A32AC​: MVM_string_utf8_encode_C_string (utf8.c​:473)
==988== by 0x41063BD​: MVM_nativecall_unmarshal_string (nativecall.c​:277)
==988== by 0x4109BF4​: callback_handler (nativecall_dyncall.c​:374)
==988== by 0x41CC6B1​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x80307B2​: ???
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB4A5​: dcCallInt (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B615​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988==
==988== 31 (8 direct, 23 indirect) bytes in 1 blocks are definitely lost in
loss record 10 of 56
==988== at 0x402C109​: calloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x4158C64​: MVM_calloc (alloc.h​:11)
==988== by 0x4159B4F​: initialize (CStruct.c​:341)
==988== by 0x40CD3DD​: MVM_interp_run (interp.c​:1730)
==988== by 0x4109987​: callback_handler (nativecall_dyncall.c​:318)
==988== by 0x41CC6B1​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x80307F7​: ???
==988== by 0x41CBE57​: ??? (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB854​: dc_callvm_call_x86_cdecl (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x41CB4A5​: dcCallInt (in
/home/dogbert/repos/rakudo/install/lib/libmoar.so)
==988== by 0x410B615​: MVM_nativecall_invoke (nativecall_dyncall.c​:584)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988==
==988== 36 bytes in 9 blocks are definitely lost in loss record 14 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x4161E16​: MVM_malloc (alloc.h​:2)
==988== by 0x4162132​: deserialize_repr_data (NativeRef.c​:45)
==988== by 0x4177469​: deserialize_stable (serialization.c​:2599)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x416ECB4​: MVM_sc_get_sc_object (sc.c​:199)
==988== by 0x40D5BAF​: MVM_interp_run (interp.c​:3013)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 112 bytes in 2 blocks are definitely lost in loss record 19 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41700D5​: MVM_malloc (alloc.h​:2)
==988== by 0x4176DCF​: deserialize_stable (serialization.c​:2497)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x416ECB4​: MVM_sc_get_sc_object (sc.c​:199)
==988== by 0x40D5BAF​: MVM_interp_run (interp.c​:3013)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 112 bytes in 14 blocks are definitely lost in loss record 20 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41700D5​: MVM_malloc (alloc.h​:2)
==988== by 0x4176F1E​: deserialize_stable (serialization.c​:2516)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x40EF8EC​: MVM_frame_vivify_lexical (frame.c​:1100)
==988== by 0x414DCD0​: at_key (MVMContext.c​:61)
==988== by 0x40D175B​: MVM_interp_run (interp.c​:2297)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 121 bytes in 7 blocks are definitely lost in loss record 21 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41A330C​: MVM_malloc (alloc.h​:2)
==988== by 0x41A4A24​: MVM_string_utf8_c8_encode_C_string (utf8_c8.c​:551)
==988== by 0x410678A​: MVM_nativecall_build (nativecall.c​:377)
==988== by 0x40DC4E2​: MVM_interp_run (interp.c​:3949)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 256 bytes in 32 blocks are definitely lost in loss record 25 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41700D5​: MVM_malloc (alloc.h​:2)
==988== by 0x4176F1E​: deserialize_stable (serialization.c​:2516)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x416ECB4​: MVM_sc_get_sc_object (sc.c​:199)
==988== by 0x40D5BAF​: MVM_interp_run (interp.c​:3013)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 328 (28 direct, 300 indirect) bytes in 1 blocks are definitely lost
in loss record 26 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41079BD​: MVM_malloc (alloc.h​:2)
==988== by 0x41082FE​: unmarshal_callback (nativecall_dyncall.c​:95)
==988== by 0x410ACCD​: MVM_nativecall_invoke (nativecall_dyncall.c​:556)
==988== by 0x40DC5A6​: MVM_interp_run (interp.c​:3955)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 350 bytes in 41 blocks are definitely lost in loss record 27 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41700D5​: MVM_malloc (alloc.h​:2)
==988== by 0x4174A7B​: MVM_serialization_read_cstr (serialization.c​:1631)
==988== by 0x4177425​: deserialize_stable (serialization.c​:2592)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x416ECB4​: MVM_sc_get_sc_object (sc.c​:199)
==988== by 0x40D5BAF​: MVM_interp_run (interp.c​:3013)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 432 bytes in 9 blocks are definitely lost in loss record 35 of 56
==988== at 0x402C109​: calloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x4170116​: MVM_calloc (alloc.h​:11)
==988== by 0x4177041​: deserialize_stable (serialization.c​:2534)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x416ECB4​: MVM_sc_get_sc_object (sc.c​:199)
==988== by 0x40D5BAF​: MVM_interp_run (interp.c​:3013)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 436 bytes in 14 blocks are definitely lost in loss record 36 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41700D5​: MVM_malloc (alloc.h​:2)
==988== by 0x4174A7B​: MVM_serialization_read_cstr (serialization.c​:1631)
==988== by 0x4177425​: deserialize_stable (serialization.c​:2592)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x40EF8EC​: MVM_frame_vivify_lexical (frame.c​:1100)
==988== by 0x414DCD0​: at_key (MVMContext.c​:61)
==988== by 0x40D175B​: MVM_interp_run (interp.c​:2297)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 776 bytes in 14 blocks are definitely lost in loss record 47 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41700D5​: MVM_malloc (alloc.h​:2)
==988== by 0x4176DCF​: deserialize_stable (serialization.c​:2497)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x40EF8EC​: MVM_frame_vivify_lexical (frame.c​:1100)
==988== by 0x414DCD0​: at_key (MVMContext.c​:61)
==988== by 0x40D175B​: MVM_interp_run (interp.c​:2297)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 6,900 (896 direct, 6,004 indirect) bytes in 14 blocks are definitely
lost in loss record 53 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x413E774​: MVM_malloc (alloc.h​:2)
==988== by 0x4141CFA​: deserialize_repr_data (P6opaque.c​:970)
==988== by 0x4177469​: deserialize_stable (serialization.c​:2599)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x40EF8EC​: MVM_frame_vivify_lexical (frame.c​:1100)
==988== by 0x414DCD0​: at_key (MVMContext.c​:61)
==988== by 0x40D175B​: MVM_interp_run (interp.c​:2297)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 10,156 (2,048 direct, 8,108 indirect) bytes in 32 blocks are
definitely lost in loss record 54 of 56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x413E774​: MVM_malloc (alloc.h​:2)
==988== by 0x4141CFA​: deserialize_repr_data (P6opaque.c​:970)
==988== by 0x4177469​: deserialize_stable (serialization.c​:2599)
==988== by 0x4177710​: work_loop (serialization.c​:2666)
==988== by 0x41778CF​: MVM_serialization_demand_object
(serialization.c​:2703)
==988== by 0x416EBC1​: MVM_sc_get_object (sc.c​:183)
==988== by 0x416ECB4​: MVM_sc_get_sc_object (sc.c​:199)
==988== by 0x40D5BAF​: MVM_interp_run (interp.c​:3013)
==988== by 0x41C8D6A​: MVM_vm_run_file (moar.c​:304)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== 120,032 bytes in 3,751 blocks are possibly lost in loss record 56 of
56
==988== at 0x402A17C​: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==988== by 0x41ABFAD​: MVM_malloc (alloc.h​:2)
==988== by 0x41B316E​: generate_property_codes_by_names_aliases
(unicode.c​:49970)
==988== by 0x41B3B4B​: MVM_unicode_name_to_property_code (unicode.c​:49983)
==988== by 0x40CBC97​: MVM_interp_run (interp.c​:1546)
==988== by 0x41C8D40​: MVM_vm_run_file (moar.c​:291)
==988== by 0x8048EA5​: main (main.c​:191)
==988==
==988== LEAK SUMMARY​:
==988== definitely lost​: 5,639 bytes in 196 blocks
==988== indirectly lost​: 14,435 bytes in 677 blocks
==988== possibly lost​: 120,032 bytes in 3,751 blocks
==988== still reachable​: 13,660 bytes in 32 blocks
==988== suppressed​: 0 bytes in 0 blocks
==988== Reachable blocks (those to which a pointer was found) are not shown.
==988== To see them, rerun with​: --leak-check=full --show-leak-kinds=all
==988==
==988== For counts of detected and suppressed errors, rerun with​: -v
==988== ERROR SUMMARY​: 44 errors from 24 contexts (suppressed​: 0 from 0)

@p6rt p6rt added the Bug label Jan 5, 2020
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