how to view a core dump file

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# 1  
Old 01-09-2008
how to view a core dump file

by what name does a core dump file stored???

like i wrote a test code:


char *p=NULL;

of course the above code will produce a segmentation fault. but i cant see any file named core in my CWD. am using SUN0S 5.9
# 2  
Old 01-09-2008
You have some very strange behavior if that causes a segfault.
# 3  
Old 01-10-2008
Originally Posted by ramen_noodle
You have some very strange behavior if that causes a segfault.
whats so strange about it buddy. Of course trying to dereference a NULL pointer will cause a SEGMENTATION FAULT.
# 4  
Old 01-10-2008
See this article you will need "more coding" in your C program to generate core dumps.
# 5  
Old 01-10-2008
am not able to open that link. guess it has been removed. can you tell me this "do all segmentation call produce core dump". if NO, then when will a segmentation fault produce a core dump
# 6  
Old 01-10-2008
I can open that link fine. Smilie

Dereferencing a null pointer is illegal, but illegal behavior does not have guaranteed results. It may or may not cause a core dump.
# 7  
Old 01-11-2008
I'll instruct you despite your tone.
That's not an invalid memory location (your NULL pointer is a misleading term), it's a pointer to type char assigned NULL. There is a valid memory location assigned to this pointer but no additional storage has been allocated. Thus the assignment of NULL and the printing of the assignment is perfectly legal.
printf("Pointer at %p and value assigned =%s\n",&p,p);

Perhaps this is what you meant to say would segfault as it is a dereference.

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