Hello, everyone
I am using LLDB API to implement a gui debugger, but if I set a breakpoint
using the following code:
// variable i is the line number to set breakpoint at.SBBreakpoint b =
m_target.BreakpointCreateByLocation(m_target.GetExecutable().GetFilename(),
i);qDebug("Created Breakpoint %s At Line %d.",
qPrintable(QString::number(b.GetNumLocations()).toLocal8Bit()), i);
When I launch the program using m_target.LaunchSimple(NULL, NULL, "/") and when
the target hit the breakpoint, the gui debugger crashes and exits. If I start
the gui debugger using lldb I can see the following output:
(lldb) rProcess 14932 launched:
'/home/szm/Documents/workSpace/qt/build-studio2-LLVM_qt5-Debug/studio2'
(x86_64)Process 14932 stopped and restarted: thread 1 received signal:
SIGCHLDCreated Breakpoint 0 At Line 7. <-- this is my program's
output.Process 14932 stopped and restarted: thread 9 received signal:
SIGCHLDProcess 14932 stopped* thread #9: tid = 14953, 0x00007f1c5d5fa102
liblldb.so`ProcessMonitor::ServeOperation(ProcessMonitor::OperationArgs*) + 50,
name = 'operation', stop reason = invalid address (fault address: 0x11)
frame #0: 0x00007f1c5d5fa102
liblldb.so`ProcessMonitor::ServeOperation(ProcessMonitor::OperationArgs*) +
50liblldb.so`ProcessMonitor::ServeOperation(ProcessMonitor::OperationArgs*) +
50:-> 0x7f1c5d5fa102: callq *0x10(%rdx) 0x7f1c5d5fa105: movq %rbp, %rdi
0x7f1c5d5fa108: callq 0x7f1c5c8c1a80 ; symbol stub for: sem_post
0x7f1c5d5fa10d: jmp 0x7f1c5d5fa0f0 ;
ProcessMonitor::ServeOperation(ProcessMonitor::OperationArgs*) + 32(lldb)
Seems that the program got SIGCHLD because the "invalid address", but I have no
idea how to fix it. (I'm using ubuntu 14.04 with lldb-3.4-dev from apt-get.)
Thanks,Song Ziming
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