the GDB process terminated unexpectedly (exit code3) - debugging

Question

i am coding in Qt 5.7 on win 7. my app is run correctly. but when i use the debugger, a error dialog box showed: the GDB process terminated unexpectedly (exit code3).
last part of debugger log :
>~"../../../../src/gdb-7.10.1/gdb/utils.c:1071: internal-error: virtual memory exhausted.\nA problem internal to GDB has been detected,\nfurther debugging may prove unreliable.\nCreate a core file of GDB? "
>~"(y or n) [answered Y; input not from terminal]\n"
dUNEXPECTED GDB STDERR:
dThis application has requested the Runtime to terminate it in an unusual way.
dPlease contact the application's support team for more information.
dGDB PROCESS FINISHED, status 0, exit code 3
dNOTE: ENGINE ILL ******
dFORWARDING STATE TO InferiorShutdownFailed
dState changed BY FORCE from InferiorStopOk(14) to InferiorShutdownFailed(17) [master]
dState changed from InferiorShutdownFailed(17) to EngineShutdownRequested(19) [master]
dQUEUE: SHUTDOWN ENGINE
dCALL: SHUTDOWN ENGINE
dPLAIN ADAPTER SHUTDOWN 19
dINITIATE GDBENGINE SHUTDOWN IN STATE 14, PROC: 0
dNOTE: ENGINE SHUTDOWN OK
dState changed from EngineShutdownRequested(19) to EngineShutdownOk(21) [master]
dState changed from EngineShutdownOk(21) to DebuggerFinished(22) [master]
dQUEUE: FINISH DEBUGGER
dNOTE: FINISH DEBUGGER
dHANDLE RUNCONTROL FINISHED
sDebugger finished.
in a part of my code i used QVector:
int logic_points_number=5;
int logic_input_points[16][logic_points_number] ;
QVector<double> x1_1(2*logic_points_number);
QVector<double> y1_1(32*logic_points_number);
x1_position=x1_last_position_logic;//start from last drawn point
for(int logic_channel=0;logic_channel<16;logic_channel++){
for (int i=0;i<logic_points_number ;i++){
if (logic_channel==0)// set x1_1 only for first channel
x1_1[2*i]= x1_position;
y1_1[(2*logic_channel*logic_points_number)+(2*i)]=(16.2-logic_channel)+(0.6*logic_input_points[logic_channel][i]);
if (logic_channel==0){// set x1_1 and x1_position only for first channel
x1_position = x1_position + x1_step_logic;
x1_1[(2*i)+1]= x1_position;
}
y1_1[(2*logic_channel*logic_points_number)+(2*i)+1]=(16.2-logic_channel)+(0.6*logic_input_points[logic_channel][i]);
}
}
x1_last_position_logic= x1_position;//Set new last drawn point
}
in run there is no problem. when i delete the above code, there is no problem in debugger.
there is no helpful answer in google.what i shall to do?
thanks

Answer 1

In my case error code was 'the cdb process terminated unexpectedly (code -805306181)'. Changing debugger from 32 bit app debugger to 64 bit app debugger fixed this issue