Andersbakken
commented
10 years ago Hi
This is actually a clang bug. Somehow clang will crash on us a lot of the time if the files being indexed are changed underneath them. I've put in some code that I hope addresses this (it's hard to reproduce reliably) by reading the file into memory ourselves and then using their CXUnsavedFiles API to prevent them from hitting the file system. If you find a way to reliably reproduce this problem I would love to have you try with 01c466e applied.
regards
Anders
On Tue, Jun 24, 2014 at 8:26 AM, Gravemind notifications@github.com wrote:
I got sevral time the same crash when editing "not-yet-buildable" code in emacs
Here the gdb with a debug build
[ 36%] 10/28 17:02:47 ~/documents/?????????????????.cpp error in 899ms. (1 deps) (dirty). libclang: crash detected during parsing: { 'source_filename' : '/home/??????????????' 'command_line_args' : ['-Wall', '-Wextra', '-ffast-math', '-O2', '-g', '-m64', '-fno-strict-aliasing', '-mfpmath=sse', '-Wno-unused-variable', '-Wno-unused-parameter', '-Wno-unused-but-set-variable', '-Wno-attributes', '-Wno-unused-local-typedefs', '-std=gnu++0x', '-fno-exceptions', '-c', '-ferror-limit=0', '-Wall', '-fspell-checking', '-Wno-unknown-warning-option', '???????????'], 'unsaved_files' : [], 'options' : 1, } got failure clang -Wall -Wextra -ffast-math -O2 -g -m64 -fno-strict-aliasing -mfpmath=sse -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-attributes -Wno-unused-local-typedefs -std=gnu++0x -fno-exceptions -c -ferror-limit=0 -Wall -fspell-checking -Wno-unknown-warning-option ??????????
[ 39%] 11/28 17:02:47 ~/documents/??????????????????.cpp error in 906ms. (1 deps) (dirty). libclang: crash detected during parsing: { 'source_filename' : '/home/????????????????.cpp' 'command_line_args' : ['-Wall', '-Wextra', '-ffast-math', '-O2', '-g', '-m64', '-fno-strict-aliasing', '-mfpmath=sse', '-Wno-unused-variable', '-Wno-unused-parameter', '-Wno-unused-but-set-variable', '-Wno-attributes', '-Wno-unused-local-typedefs', '-std=gnu++0x', '-fno-exceptions', '-c', '-ferror-limit=0', '-Wall', '-fspell-checking', '-Wno-unknown-warning-option', '???????????????'], 'unsaved_files' : [], 'options' : 1, } got failure clang -Wall -Wextra -ffast-math -O2 -g -m64 -fno-strict-aliasing -mfpmath=sse -Wno-unused-variable -Wno-unused-parameter -Wno-unused-but-set-variable -Wno-attributes -Wno-unused-local-typedefs -std=gnu++0x -fno-exceptions -c -ferror-limit=0 -Wall -fspell-checking -Wno-unknown-warning-option ???????????
Program received signal SIGPIPE, Broken pipe. 0x00007ffff714460d in write () from /usr/lib/libpthread.so.0 (gdb) bt
0 0x00007ffff714460d in write () from /usr/lib/libpthread.so.0
1 0x00007ffff5a6214f in Process::handleInput (this=0x3bfb720, fd=18) at /home/jo/bin/rtags/src/rct/rct/Process.cpp:617
2 0x00007ffff5a61d6b in Process::processCallback (this=0x3bfb720, fd=18, mode=2) at /home/jo/bin/rtags/src/rct/rct/Process.cpp:564
3 0x00007ffff5a69fdf in std::_Memfn<void (Process::*)(int, int)>::operator()<int, unsigned int, void>(Process, int&&, unsigned int&&) const (this=0x43fb080, __object=0x3bfb720) at /usr/include/c++/4.9.0/functional:569
4 0x00007ffff5a68e42 in std::_Bind<std::_Memfn<void (Process::)(int, int)> (Process_, std::_Placeholder<1>, std::_Placeholder<2>)>::__call<void, int&&, unsigned int&&, 0ul, 1ul, 2ul>(std::tuple<int&&, unsigned int&&>&&, std::_Index_tuple<0ul, 1ul, 2ul>) (
this=0x43fb080, __args=<unknown type in /home/jo/bin/rtags/src/rct/librct.so, CU 0x1005ae, DIE 0x130fdf>) at /usr/include/c++/4.9.0/functional:12645 0x00007ffff5a6701d in std::_Bind<std::_Memfn<void (Process::)(int, int)> (Process_, std::_Placeholder<1>, std::_Placeholder<2>)>::operator()<int, unsigned int, void>(int&&, unsigned int&&) (this=0x43fb080) at /usr/include/c++/4.9.0/functional:1323
6 0x00007ffff5a65359 in std::_Function_handler<void (int, unsigned int), std::_Bind<std::_Memfn<void (Process::)(int, int)> (Process*, std::_Placeholder<1>, std::_Placeholder<2>)> >::_M_invoke(std::_Any_data const&, int, unsigned int) (functor=..., args#0=18,
__args#1=2) at /usr/include/c++/4.9.0/functional:20397 0x00007ffff5a3ee4c in std::function<void (int, unsigned int)>::operator()(int, unsigned int) const (this=0x7fffffffd680, args#0=18, args#1=2) at /usr/include/c++/4.9.0/functional:2439
8 0x00007ffff5a3a8e7 in EventLoop::fireSocket (this=0x62d270, fd=18, mode=2) at /home/jo/bin/rtags/src/rct/rct/EventLoop.cpp:648
9 0x00007ffff5a3ad91 in EventLoop::processSocketEvents (this=0x62d270, events=0x7fffffffd840, eventCount=1) at /home/jo/bin/rtags/src/rct/rct/EventLoop.cpp:788
10 0x00007ffff5a3b0f4 in EventLoop::exec (this=0x62d270, timeoutTime=-1) at /home/jo/bin/rtags/src/rct/rct/EventLoop.cpp:893
11 0x000000000041324c in main (argc=2, argv=0x7fffffffe718) at /home/jo/bin/rtags/src/rdm.cpp:547
(gdb) f 1
1 0x00007ffff5a6214f in Process::handleInput (this=0x3bfb720, fd=18) at /home/jo/bin/rtags/src/rct/rct/Process.cpp:617
617 eintrwrap(w, ::write(fd, front.mid(mStdInIndex).constData(), want)); (gdb) l 612 //printf("Process::handleInput in loop\n"); 613 int w, want; 614 const String& front = mStdInBuffer.front(); 615 if (mStdInIndex) { 616 want = front.size() - mStdInIndex; 617 eintrwrap(w, ::write(fd, front.mid(mStdInIndex).constData(), want)); 618 } else { 619 want = front.size(); 620 eintrwrap(w, ::write(fd, front.constData(), want)); 621 } (gdb)
gdb fails to generate a core file, I hope this will be enough.
— Reply to this email directly or view it on GitHub https://github.com/Andersbakken/rtags/issues/188.
Gravemind
jhanssen
I got sevral time the same crash when editing "not-yet-buildable" code in emacs
Here the gdb with a debug build
gdb fails to generate a core file, I hope this will be enough.