*** glibc detected *** ./a.out: malloc(): memory corruption (fast):
Posted A minute ago
M trying to make multiway tree and dont know what happend when this part of code get executed:
01void ins(NODE *ptr)
02{
03 //working
04 if(ptr!=NULL)
05 {
06 SNODE *var=NULL;
07 var=(SNODE *)malloc(sizeof(SNODE));
08 var->next=start;
09 start=var;
10 var->info=ptr;
11 }//end if
12}//end ins()
error :
*** glibc detected *** ./a.out: malloc(): memory corruption (fast): 0x08bde038 ***
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(+0x6ebc2)[0xb76a7bc2]
/lib/i386-linux-gnu/libc.so.6(+0x70cf3)[0xb76a9cf3]
/lib/i386-linux-gnu/libc.so.6(__libc_calloc+0xae)[0xb76ac4ce]
./a.out[0x80485f9]
./a.out[0x8048985]
./a.out[0x8048ce4]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb7652113]
./a.out[0x80484c1]
======= Memory map: ========
08048000-0804a000 r-xp 00000000 08:01 117539 /home/utkarsh/Desktop/c-code/Data_structures/trees/a.out
0804a000-0804b000 r--p 00001000 08:01 117539 /home/utkarsh/Desktop/c-code/Data_structures/trees/a.out
0804b000-0804c000 rw-p 00002000 08:01 117539 /home/utkarsh/Desktop/c-code/Data_structures/trees/a.out
08bde000-08bff000 rw-p 00000000 00:00 0 [heap]
b7500000-b7521000 rw-p 00000000 00:00 0
b7521000-b7600000 ---p 00000000 00:00 0
b7605000-b7621000 r-xp 00000000 08:01 94286 /lib/i386-linux-gnu/libgcc_s.so.1
b7621000-b7622000 r--p 0001b000 08:01 94286 /lib/i386-linux-gnu/libgcc_s.so.1
b7622000-b7623000 rw-p 0001c000 08:01 94286 /lib/i386-linux-gnu/libgcc_s.so.1
b7638000-b7639000 rw-p 00000000 00:00 0
b7639000-b77af000 r-xp 00000000 08:01 94290 /lib/i386-linux-gnu/libc-2.13.so
b77af000-b77b1000 r--p 00176000 08:01 94290 /lib/i386-linux-gnu/libc-2.13.so
b77b1000-b77b2000 rw-p 00178000 08:01 94290 /lib/i386-linux-gnu/libc-2.13.so
b77b2000-b77b5000 rw-p 00000000 00:00 0
b77c8000-b77cc000 rw-p 00000000 00:00 0
b77cc000-b77cd000 r-xp 00000000 00:00 0 [vdso]
b77cd000-b77eb000 r-xp 00000000 08:01 94287 /lib/i386-linux-gnu/ld-2.13.so
b77eb000-b77ec000 r--p 0001d000 08:01 94287 /lib/i386-linux-gnu/ld-2.13.so
b77ec000-b77ed000 rw-p 0001e000 08:01 94287 /lib/i386-linux-gnu/ld-2.13.so
bfd86000-bfda7000 rw-p 00000000 00:00 0 [stack]
Aborted
pls guys tell me exactly what happend and what does the error massage means and also a solution pls.
thanks!!