SEGV part II

gistfile1.txt

dogbert@dogbert-VirtualBox ~/repos/rakudo $ ./perl6-valgrind-m -I lib t/spec/S04-declarations/constant.rakudo.moar 
================================================================================================
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 2016.11.31.g.17604.e.3 built on MoarVM version 2016.11,
running on ubuntu (14.04.3.LTS.Trusty.Tahr) / linux (3.19.0.32.generic)
------------------------------------------------------------------------------------------------
==6607== Memcheck, a memory error detector
==6607== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==6607== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==6607== 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 -I lib t/spec/S04-declarations/constant.rakudo.moar
==6607== 
==6607== Invalid free() / delete / delete[] / realloc()
==6607==    at 0x4105E53: MVM_fixed_size_free_at_safepoint (fixedsizealloc.c:286)
==6607==    by 0x4197E79: twiddle_trie_node (nfg.c:132)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607==    by 0x419809F: add_synthetic (nfg.c:188)
==6607==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6607==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6607==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6607==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6607==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6607==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6607==    by 0x419573F: MVM_string_utf8_decode (utf8.c:198)
==6607==    by 0x40E882E: MVM_cu_obtain_string (compunit.c:228)
==6607==  Address 0x46890c4 is 0 bytes inside a block of size 16 client-defined
==6607==    at 0x41059B3: alloc_slow_path (fixedsizealloc.c:131)
==6607==    by 0x4105B3E: MVM_fixed_size_alloc (fixedsizealloc.c:181)
==6607==    by 0x4197B6B: twiddle_trie_node (nfg.c:46)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607==    by 0x419809F: add_synthetic (nfg.c:188)
==6607==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6607==    by 0x41981FA: MVM_nfg_crlf_grapheme (nfg.c:232)
==6607==    by 0x4193D26: MVM_string_decode_stream_sep_default (decode_stream.c:522)
==6607==    by 0x411A3BA: MVM_io_syncstream_from_uvstream (syncstream.c:347)
==6607==    by 0x411C763: MVM_file_get_stdstream (fileops.c:357)
==6607==    by 0x41BBCA6: setup_std_handles (moar.c:270)
==6607==    by 0x41BBC5B: MVM_vm_create_instance (moar.c:260)
==6607== 
==6607== Invalid free() / delete / delete[] / realloc()
==6607==    at 0x4105E53: MVM_fixed_size_free_at_safepoint (fixedsizealloc.c:286)
==6607==    by 0x4197E79: twiddle_trie_node (nfg.c:132)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607==    by 0x419809F: add_synthetic (nfg.c:188)
==6607==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6607==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6607==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6607==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6607==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6607==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6607==    by 0x419573F: MVM_string_utf8_decode (utf8.c:198)
==6607==  Address 0x89b2f3c is 0 bytes inside a block of size 16 client-defined
==6607==    at 0x41059B3: alloc_slow_path (fixedsizealloc.c:131)
==6607==    by 0x4105B3E: MVM_fixed_size_alloc (fixedsizealloc.c:181)
==6607==    by 0x4197B6B: twiddle_trie_node (nfg.c:46)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607==    by 0x419809F: add_synthetic (nfg.c:188)
==6607==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6607==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6607==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6607==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6607==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6607==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6607== 
==6607== Invalid free() / delete / delete[] / realloc()
==6607==    at 0x4105E53: MVM_fixed_size_free_at_safepoint (fixedsizealloc.c:286)
==6607==    by 0x4197E79: twiddle_trie_node (nfg.c:132)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607==    by 0x419809F: add_synthetic (nfg.c:188)
==6607==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6607==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6607==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6607==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6607==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6607==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6607==  Address 0x89b30a4 is 0 bytes inside a block of size 16 client-defined
==6607==    at 0x41059B3: alloc_slow_path (fixedsizealloc.c:131)
==6607==    by 0x4105B3E: MVM_fixed_size_alloc (fixedsizealloc.c:181)
==6607==    by 0x4197B6B: twiddle_trie_node (nfg.c:46)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607==    by 0x419809F: add_synthetic (nfg.c:188)
==6607==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6607==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6607==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6607==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6607==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6607== 
==6614== Memcheck, a memory error detector
==6614== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==6614== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==6614== 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 --target=mbc --output=/home/dogbert/repos/rakudo/lib/.precomp/F0A740B460EBBFD6453D5130FA482D73FB62CF2F.1479834515.74086/64/640AB2BAE07BEDC4C163F679A746F7AB7FB5D1FA.bc --source-name=/home/dogbert/repos/rakudo/lib/Test.pm6\ (Test) /home/dogbert/repos/rakudo/lib/Test.pm6
==6614== 
==6614== Invalid free() / delete / delete[] / realloc()
==6614==    at 0x4105E53: MVM_fixed_size_free_at_safepoint (fixedsizealloc.c:286)
==6614==    by 0x4197E79: twiddle_trie_node (nfg.c:132)
==6614==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6614==    by 0x419809F: add_synthetic (nfg.c:188)
==6614==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6614==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6614==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6614==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6614==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6614==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6614==    by 0x419573F: MVM_string_utf8_decode (utf8.c:198)
==6614==    by 0x40E882E: MVM_cu_obtain_string (compunit.c:228)
==6614==  Address 0x46890c4 is 0 bytes inside a block of size 16 client-defined
==6614==    at 0x41059B3: alloc_slow_path (fixedsizealloc.c:131)
==6614==    by 0x4105B3E: MVM_fixed_size_alloc (fixedsizealloc.c:181)
==6614==    by 0x4197B6B: twiddle_trie_node (nfg.c:46)
==6614==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6614==    by 0x419809F: add_synthetic (nfg.c:188)
==6614==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6614==    by 0x41981FA: MVM_nfg_crlf_grapheme (nfg.c:232)
==6614==    by 0x4193D26: MVM_string_decode_stream_sep_default (decode_stream.c:522)
==6614==    by 0x411A3BA: MVM_io_syncstream_from_uvstream (syncstream.c:347)
==6614==    by 0x411C763: MVM_file_get_stdstream (fileops.c:357)
==6614==    by 0x41BBCA6: setup_std_handles (moar.c:270)
==6614==    by 0x41BBC5B: MVM_vm_create_instance (moar.c:260)
==6614== 
==6614== Invalid free() / delete / delete[] / realloc()
==6614==    at 0x4105E53: MVM_fixed_size_free_at_safepoint (fixedsizealloc.c:286)
==6614==    by 0x4197E79: twiddle_trie_node (nfg.c:132)
==6614==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6614==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6614==    by 0x419809F: add_synthetic (nfg.c:188)
==6614==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6614==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6614==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6614==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6614==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6614==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6614==    by 0x419573F: MVM_string_utf8_decode (utf8.c:198)
==6614==  Address 0x89dfb4c is 0 bytes inside a block of size 16 client-defined
==6614==    at 0x41059B3: alloc_slow_path (fixedsizealloc.c:131)
==6614==    by 0x4105B3E: MVM_fixed_size_alloc (fixedsizealloc.c:181)
==6614==    by 0x4197B6B: twiddle_trie_node (nfg.c:46)
==6614==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6614==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6614==    by 0x419809F: add_synthetic (nfg.c:188)
==6614==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6614==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6614==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6614==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6614==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6614==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6614== 
==6614== Invalid free() / delete / delete[] / realloc()
==6614==    at 0x4105E53: MVM_fixed_size_free_at_safepoint (fixedsizealloc.c:286)
==6614==    by 0x4197E79: twiddle_trie_node (nfg.c:132)
==6614==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6614==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6614==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6614==    by 0x419809F: add_synthetic (nfg.c:188)
==6614==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6614==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6614==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6614==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6614==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6614==    by 0x4194E86: MVM_unicode_normalizer_process_codepoint_to_grapheme (normalize.h:119)
==6614==  Address 0x89dfcb4 is 0 bytes inside a block of size 16 client-defined
==6614==    at 0x41059B3: alloc_slow_path (fixedsizealloc.c:131)
==6614==    by 0x4105B3E: MVM_fixed_size_alloc (fixedsizealloc.c:181)
==6614==    by 0x4197B6B: twiddle_trie_node (nfg.c:46)
==6614==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6614==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6614==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6614==    by 0x419809F: add_synthetic (nfg.c:188)
==6614==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6614==    by 0x419818C: MVM_nfg_codes_to_grapheme (nfg.c:217)
==6614==    by 0x41AC963: grapheme_composition (normalize.c:558)
==6614==    by 0x41ACD0B: MVM_unicode_normalizer_process_codepoint_full (normalize.c:661)
==6614==    by 0x4194E5A: MVM_unicode_normalizer_process_codepoint (normalize.h:111)
==6614== 
==6614== Syscall param write(buf) points to uninitialised byte(s)
==6614==    at 0x44BC003: __write_nocancel (syscall-template.S:81)
==6614==    by 0x444FD20: _IO_file_write@@GLIBC_2.1 (fileops.c:1261)
==6614==    by 0x444EF5E: new_do_write (fileops.c:538)
==6614==    by 0x44503D1: _IO_file_xsputn@@GLIBC_2.1 (fileops.c:1343)
==6614==    by 0x4445891: fwrite (iofwrite.c:43)
==6614==    by 0x4171EF7: MVM_mast_to_file (driver.c:75)
==6614==    by 0x40D5F3B: MVM_interp_run (interp.c:3102)
==6614==    by 0x41BBE9F: MVM_vm_run_file (moar.c:309)
==6614==    by 0x8048EA5: main (main.c:192)
==6614==  Address 0xc1eb597 is 31,607 bytes inside a block of size 143,308 alloc'd
==6614==    at 0x402A17C: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==6614==    by 0x416B95F: MVM_malloc (alloc.h:2)
==6614==    by 0x4170CC0: form_bytecode_output (compiler.c:1427)
==6614==    by 0x41717C8: MVM_mast_compile (compiler.c:1602)
==6614==    by 0x4171E8A: MVM_mast_to_file (driver.c:75)
==6614==    by 0x40D5F3B: MVM_interp_run (interp.c:3102)
==6614==    by 0x41BBE9F: MVM_vm_run_file (moar.c:309)
==6614==    by 0x8048EA5: main (main.c:192)
==6614== 
==6614== 
==6614== HEAP SUMMARY:
==6614==     in use at exit: 152,912 bytes in 4,612 blocks
==6614==   total heap usage: 1,932,359 allocs, 625,639 frees, 411,749,889 bytes allocated
==6614== 
==6614== LEAK SUMMARY:
==6614==    definitely lost: 5,474 bytes in 182 blocks
==6614==    indirectly lost: 14,052 bytes in 670 blocks
==6614==      possibly lost: 120,032 bytes in 3,751 blocks
==6614==    still reachable: 13,354 bytes in 9 blocks
==6614==         suppressed: 0 bytes in 0 blocks
==6614== Rerun with --leak-check=full to see details of leaked memory
==6614== 
==6614== For counts of detected and suppressed errors, rerun with: -v
==6614== Use --track-origins=yes to see where uninitialised values come from
==6614== ERROR SUMMARY: 9 errors from 4 contexts (suppressed: 0 from 0)
================================================================================================
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 2016.11.31.g.17604.e.3 built on MoarVM version 2016.11,
running on ubuntu (14.04.3.LTS.Trusty.Tahr) / linux (3.19.0.32.generic)
------------------------------------------------------------------------------------------------
MoarVM panic: Internal error: invalid thread ID 201287872 in GC work pass
==6607== 
==6607== HEAP SUMMARY:
==6607==     in use at exit: 77,924,943 bytes in 372,357 blocks
==6607==   total heap usage: 2,132,188 allocs, 284,958 frees, 387,170,470 bytes allocated
==6607== 
==6607== Block 0x46890c4..0x46890d3 overlaps with block 0x46890c4..0x46890cb
==6607== Blocks allocation contexts:
==6607==    at 0x41059B3: alloc_slow_path (fixedsizealloc.c:131)
==6607==    by 0x4105B3E: MVM_fixed_size_alloc (fixedsizealloc.c:181)
==6607==    by 0x4197B6B: twiddle_trie_node (nfg.c:46)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607==    by 0x419809F: add_synthetic (nfg.c:188)
==6607==    by 0x4198135: lookup_or_add_synthetic (nfg.c:202)
==6607==    by 0x41981FA: MVM_nfg_crlf_grapheme (nfg.c:232)
==6607==    by 0x4193D26: MVM_string_decode_stream_sep_default (decode_stream.c:522)
==6607==    by 0x411A3BA: MVM_io_syncstream_from_uvstream (syncstream.c:347)
==6607==    by 0x411C763: MVM_file_get_stdstream (fileops.c:357)
==6607==    by 0x41BBCA6: setup_std_handles (moar.c:270)
==6607==    by 0x41BBC5B: MVM_vm_create_instance (moar.c:260)
==6607== 
==6607==    at 0x4105B1B: MVM_fixed_size_alloc (fixedsizealloc.c:175)
==6607==    by 0x4197CD9: twiddle_trie_node (nfg.c:82)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197BDD: twiddle_trie_node (nfg.c:52)
==6607==    by 0x4197EC2: add_synthetic_to_trie (nfg.c:138)
==6607== This is usually caused by using VALGRIND_MALLOCLIKE_BLOCKin an inappropriate way.

Memcheck: mc_leakcheck.c:1777 (vgMemCheck_detect_memory_leaks): the 'impossible' happened.

host stacktrace:
==6607==    at 0x3805A504: ??? (in /usr/lib/valgrind/memcheck-x86-linux)

sched status:
  running_tid=1


Note: see also the FAQ in the source distribution.
It contains workarounds to several common problems.
In particular, if Valgrind aborted or crashed after
identifying problems in your program, there's a good chance
that fixing those problems will prevent Valgrind aborting or
crashing, especially if it happened in m_mallocfree.c.

If that doesn't help, please report this bug to: www.valgrind.org

In the bug report, send all the above text, the valgrind
version, and what OS and version you are using.  Thanks.