CASE .1 int *a; /* pointer variable declaration */ int b; /* actual variable declaration */ *a=11;//Not valid means you are not owner of the address where a now pointing it is unknown and accessing this will segfault/ a=&b;/* store address of b in pointer variable*/ This is going to be segmentation fault because the … Read more
raise() can be used to raise a segfault: raise(SIGSEGV);
strtok modifies its first argument, hence it should be modifiable. Maybe ReadName() returns a pointer to a read-only char array.Can you show us your ReadName() function. If that is the reason for seg-faullt, you can create a copy of the char array before you pass it to strtok using the strdup function like: char *copy … Read more
“Segmentation fault” message might be generated by a shell. To find out, whether the process is kill by SIGSEGV, check proc.returncode == -signal.SIGSEGV. If you want to see the message, you could run the command in the shell: #!/usr/bin/env python from subprocess import Popen, PIPE proc = Popen(shell_command, shell=True, stdout=PIPE, stderr=PIPE) out, err = proc.communicate() … Read more
Classic Heisenbug. From Wikipedia: Time can also be a factor in heisenbugs. Executing a program under control of a debugger can change the execution timing of the program as compared to normal execution. Time-sensitive bugs such as race conditions may not reproduce when the program is slowed down by single-stepping source lines in the debugger. … Read more
scanf requires the addresses of the variables to be passed to it. Replace your scanf by scanf(“%d %d”,&hour,&min); You should be good to go.
To expand on Matthew Savage’s comment, do this: brew install imagemagick –disable-openmp and it starts working again. No need to edit the files. (I’m not sure if thats what he’s actually saying or if he’s saying remove the flag, but the above homebrew command works for me on OSX 10.6) If you already have imagemagick … Read more
Call webview.clearCache(); and webView2.destroyDrawingCache(); That should solve the problem.
Allocate memory before using the pointer. If you don’t allocate memory *point = 12 is undefined behavior. int *fun() { int *point = malloc(sizeof *point); /* Mandatory. */ *point=12; return point; } Also your printf is wrong. You need to dereference (*) the pointer. printf(“%d”, *ptr); ^
You probably don’t have 10 megabytes of stack space. Make that array global, declare it with static, or allocate it dynamically using malloc(). If you choose the latter, don’t forget to free() it. Later, when you need to use the 100,000,000 element array, make sure to use a new allocation for it!