[rasmusneckelmann]

Thanks for the explanation, I must have missed that when figuring out which type of licenses we should get.

Below is my GDB log from when I stopped debugging. I don’t see anything that could be a problem (but sure, I don’t know much about GDB).

Anyway, I’ve found that the problem is related to threads (using pthread). If I don’t create any threads, then everything work just fine. If I write a minimal program that creates a thread, then GDB is going to hang when I try to stop it. I can also reproduce this problem when I’m using GDB directly from the command line, so I’m not gonna blame VisualGDB.

gdb7121 --interpreter mi --args "/tmp/VisualGDB/d/blue/code/servers/file_server_head/Debug/file_server_head" -worker_threads 1 -storage_path ~/data -unit_tests
[ 0 ms] -gdb-version
[ 0 ms] -gdb-version
[ 0 ms] =thread-group-added,id="i1"
[ 0 ms] ~"GNU gdb (GDB) 7.12.1 [GDB v7.12.1 for FreeBSD]\n"
[ 0 ms] ~"Copyright (C) 2017 Free Software Foundation, Inc.\n"
[ 0 ms] ~"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\nand \"show warranty\" for details.\n"
[ 0 ms] ~"This GDB was configured as \"x86_64-portbld-freebsd11.0\".\nType \"show configuration\" for configuration details."
[ 0 ms] ~"\nFor bug reporting instructions, please see:\n"
[ 0 ms] ~"<http://www.gnu.org/software/gdb/bugs/>.\n"
[ 0 ms] ~"Find the GDB manual and other documentation resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"
[ 0 ms] ~"For help, type \"help\".\n"
[ 0 ms] ~"Type \"apropos word\" to search for commands related to \"word\"...\n"
[ 2 ms] ~"Reading symbols from /tmp/VisualGDB/d/blue/code/servers/file_server_head/Debug/file_server_head..."
[ 9 ms] ~"done.\n"
[ 10 ms] ~"GNU gdb (GDB) 7.12.1 [GDB v7.12.1 for FreeBSD]\n"
[ 10 ms] ~"Copyright (C) 2017 Free Software Foundation, Inc.\n"
[ 11 ms] ~"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\nand \"show warranty\" for details.\n"
[ 11 ms] ~"This GDB was configured as \"x86_64-portbld-freebsd11.0\".\nType \"show configuration\" for configuration details."
[ 11 ms] ~"\nFor bug reporting instructions, please see:\n"
[ 11 ms] ~"<http://www.gnu.org/software/gdb/bugs/>.\n"
[ 11 ms] ~"Find the GDB manual and other documentation resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"
[ 11 ms] ~"For help, type \"help\".\n"
[ 11 ms] ~"Type \"apropos word\" to search for commands related to \"word\".\n"
[ 11 ms] ^done
[ 11 ms] -list-features
[ 11 ms] ^done,features=["frozen-varobjs","pending-breakpoints","thread-info","data-read-memory-bytes","breakpoint-notifications","ada-task-info","language-option","info-gdb-mi-command","undefined-command-error-code","exec-run-start-option","python"]
[ 11 ms] -gdb-set disassembly-flavor intel
[ 11 ms] ^done
[ 11 ms] -gdb-set print demangle off
[ 11 ms] ^done
[ 11 ms] -break-insert -f main
[ 12 ms] ^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x0000000000406c03",func="main(int, char**)",file="main.cpp",fullname="/tmp/VisualGDB/d/blue/code/servers/file_server_head/main.cpp",line="123",thread-groups=["i1"],times="0",original-location="main"}
[ 884 ms] -inferior-tty-set /dev/pts/3
[ 884 ms] ^done
[ 892 ms] info target
[ 893 ms] &"info target\n"
[ 893 ms] ~"Symbols from \"/tmp/VisualGDB/d/blue/code/servers/file_server_head/Debug/file_server_head\".\n"
[ 893 ms] ~"Local exec file:\n"
[ 893 ms] ~"\t`/tmp/VisualGDB/d/blue/code/servers/file_server_head/Debug/file_server_head', file type elf64-x86-64-freebsd.\n"
[ 893 ms] ~"\tEntry point: 0x401c40\n"
[ 893 ms] ~"\t0x0000000000400200 - 0x0000000000400215 is .interp\n"
[ 893 ms] ~"\t0x0000000000400218 - 0x0000000000400248 is .note.tag\n"
[ 893 ms] ~"\t0x0000000000400248 - 0x0000000000400494 is .hash\n"
[ 893 ms] ~"\t0x0000000000400498 - 0x0000000000400be8 is .dynsym\n"
[ 893 ms] ~"\t0x0000000000400be8 - 0x0000000000400f65 is .dynstr\n"
[ 893 ms] ~"\t0x0000000000400f66 - 0x0000000000401002 is .gnu.version\n"
[ 893 ms] ~"\t0x0000000000401008 - 0x00000000004010c8 is .gnu.version_r\n"
[ 893 ms] ~"\t0x00000000004010c8 - 0x0000000000401128 is .rela.dyn\n"
[ 893 ms] ~"\t0x0000000000401128 - 0x00000000004017b8 is .rela.plt\n"
[ 893 ms] ~"\t0x00000000004017b8 - 0x00000000004017cb is .init\n"
[ 893 ms] ~"\t0x00000000004017d0 - 0x0000000000401c40 is .plt\n"
[ 893 ms] ~"\t0x0000000000401c40 - 0x000000000040cec6 is .text\n"
[ 893 ms] ~"\t0x000000000040cec8 - 0x000000000040ced6 is .fini\n"
[ 893 ms] ~"\t0x000000000040cee0 - 0x000000000040e492 is .rodata\n"
[ 893 ms] ~"\t0x000000000040e494 - 0x000000000040ec20 is .eh_frame_hdr\n"
[ 893 ms] ~"\t0x000000000040ec20 - 0x0000000000410bc4 is .eh_frame\n"
[ 893 ms] ~"\t0x0000000000410bc4 - 0x0000000000410dfd is .gcc_except_table\n"
[ 893 ms] ~"\t0x0000000000611000 - 0x0000000000611010 is .ctors\n"
[ 893 ms] ~"\t0x0000000000611010 - 0x0000000000611020 is .dtors\n"
[ 893 ms] ~"\t0x0000000000611020 - 0x0000000000611028 is .jcr\n"
[ 893 ms] ~"\t0x0000000000611040 - 0x0000000000611118 is .data.rel.ro\n"
[ 893 ms] ~"\t0x0000000000611118 - 0x00000000006112f8 is .dynamic\n"
[ 893 ms] ~"\t0x00000000006112f8 - 0x0000000000611540 is .got.plt\n"
[ 893 ms] ~"\t0x0000000000611540 - 0x0000000000611548 is .data\n"
[ 893 ms] ~"\t0x0000000000611550 - 0x0000000000611580 is .bss\n"
[ 893 ms] ^done
[ 900 ms] -exec-run
[ 909 ms] =thread-group-started,id="i1",pid="83801"
[ 909 ms] =thread-created,id="1",group-id="i1"
[ 919 ms] =library-loaded,id="/libexec/ld-elf.so.1",target-name="/libexec/ld-elf.so.1",host-name="/libexec/ld-elf.so.1",symbols-loaded="0",thread-group="i1"
[ 920 ms] ^running
[ 920 ms] *running,thread-id="all"
[ 923 ms] =library-loaded,id="/usr/local/lib/gcc49/libstdc++.so.6",target-name="/usr/local/lib/gcc49/libstdc++.so.6",host-name="/usr/local/lib/gcc49/libstdc++.so.6",symbols-loaded="0",thread-group="i1"
[ 924 ms] =library-loaded,id="/lib/libm.so.5",target-name="/lib/libm.so.5",host-name="/lib/libm.so.5",symbols-loaded="0",thread-group="i1"
[ 924 ms] =library-loaded,id="/lib/libgcc_s.so.1",target-name="/lib/libgcc_s.so.1",host-name="/lib/libgcc_s.so.1",symbols-loaded="0",thread-group="i1"
[ 924 ms] =library-loaded,id="/lib/libthr.so.3",target-name="/lib/libthr.so.3",host-name="/lib/libthr.so.3",symbols-loaded="0",thread-group="i1"
[ 924 ms] =library-loaded,id="/lib/libc.so.7",target-name="/lib/libc.so.7",host-name="/lib/libc.so.7",symbols-loaded="0",thread-group="i1"
[ 1075 ms] =breakpoint-modified,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x0000000000406c03",func="main(int, char**)",file="main.cpp",fullname="/tmp/VisualGDB/d/blue/code/servers/file_server_head/main.cpp",line="123",thread-groups=["i1"],times="1",original-location="main"}
[ 1075 ms] ~"\n"
[ 1075 ms] ~"Breakpoint 1, main (argc=6, argv=0x7fffffffe958) at main.cpp:123\n"
[ 1075 ms] ~"123\t\tcommand_line::get_instance()->init(argc, argv);\n"
[ 1075 ms] *stopped,reason="breakpoint-hit",disp="keep",bkptno="1",frame={addr="0x0000000000406c03",func="main",args=[{name="argc",value="6"},{name="argv",value="0x7fffffffe958"}],file="main.cpp",fullname="/tmp/VisualGDB/d/blue/code/servers/file_server_head/main.cpp",line="123"},thread-id="1",stopped-threads="all"
[ 1076 ms] info shared
[ 1076 ms] &"info shared\n"
[ 1077 ms] ~"From To Syms Read Shared Object Library\n"
[ 1077 ms] ~"0x00000008006135b0 0x0000000800629a19 Yes /libexec/ld-elf.so.1\n"
[ 1077 ms] ~"0x000000080088c1a0 0x00000008008fc846 Yes /usr/local/lib/gcc49/libstdc++.so.6\n"
[ 1077 ms] ~"0x0000000800b49d70 0x0000000800b63538 Yes /lib/libm.so.5\n"
[ 1077 ms] ~"0x0000000800d721d0 0x0000000800d7b468 Yes /lib/libgcc_s.so.1\n"
[ 1077 ms] ~"0x0000000800f85780 0x0000000800f949f8 Yes /lib/libthr.so.3\n"
[ 1077 ms] ~"0x00000008011e0c20 0x00000008012fe868 Yes /lib/libc.so.7\n"
[ 1077 ms] ^done
[ 1080 ms] -break-delete 1
[ 1080 ms] ^done
[ 1080 ms] -exec-continue
[ 1080 ms] ^running
[ 1080 ms] *running,thread-id="all"
[ 1151 ms] =thread-created,id="2",group-id="i1"
[ 1152 ms] ~"[New LWP 100689 of process 83801]\n"
[ 1152 ms] =thread-created,id="3",group-id="i1"
[ 1152 ms] ~"[New LWP 100690 of process 83801]\n"
[ 12853 ms] ~"\nThread "
[ 12853 ms] ~"1 received signal SIGINT, Interrupt.\n"
[ 12853 ms] ~"0x00000008012e698a in _kevent () from /lib/libc.so.7\n"
[ 12853 ms] *stopped,reason="signal-received",signal-name="SIGINT",signal-meaning="Interrupt",frame={addr="0x00000008012e698a",func="_kevent",args=[],from="/lib/libc.so.7"},thread-id="1",stopped-threads="all"
[ 13244 ms] -gdb-exit
[ 13245 ms] ^exit

 

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