structs and allocation of mem

h/w · 12-21-2003, 06:40 PM

C code:

Code:

	struct member {
		int i;
		struct mem *next;
	} list;
		
	struct member *p = (struct member *) malloc (sizeof (struct member));

im not sure when memory is allocated above. does mem get allocated when i declare "list" (im thinking yes). in that case, would the malloc for the pointer be an extra block of memory for the same object?

as always, thanks a lot.

h/w · 12-21-2003, 07:12 PM

pls disregard my question (i think its about time for a break).

infamous41md · 12-21-2003, 10:31 PM

heh heh heh i know exactly how u feel

infamous41md · 12-22-2003, 03:34 AM

ahh damn, wanna see how dumb i am? i was writing this asm routine to print out a string to stdout. first the function would append a newline to the string tho. now its supposed to first get the string length, then move in a newline character(hex 0xa) into the last byte where the NULL would usually be. soo, for the last 30 friggin minutes my dumbass kept trying to figure out why my string length function was returning 0 when it was workin fine b4. turns out i was doing this:
movl $0xa, (%ecx, %eax, 1) ;//add a newline where NULL terminator would be

instead of
movb $0xa, (%ecx, %eax, 1) ;//add a newline where NULL terminator would be

so i was moving in 0x0a000000 and trashing the rest of my strings on the stack, instead of just moving in a single by 0x0a!!! uuh duhhhhhhhhhhhhhh!! *checks clock, 4:30 am!!!* fsck maybe this has something to do with it!!! lol

h/w · 12-22-2003, 12:21 PM

heh, i think i need a break from computers for a while. last sunday, i didnt have internet connection, and it was like i hit a wall alluva sudden. i dont know what a day is like anymore without my laptop or a computer someplace. ive turned into one of those guys who looks at the cheap travel ads in the metro talkin bout gettin away from the computer to some touristy place, and dreams bout it. lol
not good.