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POLinked list insertion results in sysmalloc assertion error
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9061267
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9061359
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4
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5
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2012-01-30T08:44:03.553
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2012-01-30T09:58:36.883
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2012-01-30T09:58:36.883
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418748
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1171061
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1
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0
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300
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I have written a code to add a new member to a list . Its working fine when I take add two members. However, as soon as I add third and compile and run the code gives me an error. The code and error are as follow: <pre><code>#include<stdio.h> #include<stdlib.h> struct list_no { struct list_no *prev,*nest; struct linked_list *fnl; int seq_no; }; static int counter = 0; struct list_no *lists,*first; int add_list() { struct list_no *temp; counter++; if(lists == '\0') { lists = (struct list_no *)malloc(sizeof(struct list_no)); lists->prev = '\0'; lists->nest = '\0'; lists->fnl = '\0'; lists->seq_no = 1; first = lists; } else { temp = lists; lists->nest = (struct list_no *)malloc(sizeof(struct linked_list)); lists = lists->nest; lists->fnl = '\0'; lists->prev = temp; lists->nest = NULL; lists->seq_no = counter; } return 0; } int main() { int i=0,lcount; int i=0,lcount; char ch = 'y'; first = '\0'; lists = first; int w; while(i != 3) { add_list(); printf("\n the val ::%d\n",lists->seq_no); i++; } return 0; } </code></pre> the error message coming after ./a.out is : <pre><code>the val ::1 the val ::2 a.out: malloc.c:3097: sYSMALLOc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask) == 0)' failed. Aborted </code></pre> Why its not able to add third member?
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Linked list insertion results in sysmalloc assertion error
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