https://bugs.kde.org/show_bug.cgi?id=393387
--- Comment #4 from Milian Wolff <m...@milianw.de> ---
Neither strace, GDB or rr work. But `perf trace` works! And that's actually
quite interesting:
perf trace --no-syscalls record -m 16M -e signal:signal_deliver -e
signal:signal_generate --call-graph dwarf ./AppRun -s test
a SIGCHLD is received while we are writing:
kdevelop 8054 [000] 244815.920388: signal:signal_deliver: sig=17 errno=0
code=1 sa_handler=7fdf2fd03570 sa_flags=4000005
ffffffff8508c817 get_signal ([kernel.kallsyms])
e747b __GI___libc_write (/usr/lib/libc-2.26.so)
791ec _IO_new_file_write (inlined)
784ce new_do_write (/usr/lib/libc-2.26.so)
7a3e8 _IO_new_do_write (inlined)
798e6 _IO_new_file_xsputn (inlined)
4cf7b _IO_vfprintf_internal (inlined)
104d15 ___fprintf_chk (inlined)
7fd2 fprintf (inlined)
7fd2 writeLine<long unsigned int, unsigned int, long
unsigned int> (inlined)
7fd2 handleMalloc (inlined)
7fd2 heaptrack_malloc
(/home/milian/projects/compiled/other/lib/heaptrack/libheaptrack_preload.so)
31d6 malloc
(/home/milian/projects/compiled/other/lib/heaptrack/libheaptrack_preload.so)
8d088 operator new (/usr/lib/libstdc++.so.6.0.24)
220553 QAbstractItemModel::QAbstractItemModel
(/tmp/KDevelop-5.2.1-x86_64/usr/lib/libQt5Core.so.5)
...
then shortly after we get the SIGPIPE when heaptrack_interpret quits after
receiving the bogus data:
kdevelop 8054 [000] 244815.967719: signal:signal_generate: sig=13 errno=0
code=0 comm=kdevelop pid=8054 grp=0 res=1
ffffffff8508ab72 __send_signal ([kernel.kallsyms])
ffffffff8508ab72 __send_signal ([kernel.kallsyms])
e747b __GI___libc_write (/usr/lib/libc-2.26.so)
791ec _IO_new_file_write (inlined)
784ce new_do_write (/usr/lib/libc-2.26.so)
7a3e8 _IO_new_do_write (inlined)
798e6 _IO_new_file_xsputn (inlined)
4e57d _IO_vfprintf_internal (inlined)
104d15 ___fprintf_chk (inlined)
7f5a fprintf (inlined)
7f5a writeLine<long unsigned int, unsigned int> (inlined)
7f5a operator() (inlined)
7f5a index<(anonymous
namespace)::HeapTrack::handleMalloc(void*, size_t, const
Trace&)::<lambda(uintptr_t, uint32_t)> > (inlined)
7f5a handleMalloc (inlined)
7f5a heaptrack_malloc
(/home/milian/projects/compiled/other/lib/heaptrack/libheaptrack_preload.so)
31d6 malloc
(/home/milian/projects/compiled/other/lib/heaptrack/libheaptrack_preload.so)
8d088 operator new (/usr/lib/libstdc++.so.6.0.24)
f8a83 QHashData::rehash
(/tmp/KDevelop-5.2.1-x86_64/usr/lib/libQt5Core.so.5)
...
could that be the reason here?
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