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Full Discussion: Why does this occur? *** glibc detected *** malloc(): memory corruption: 0x10013ff8 ***
Top Forums Programming Why does this occur? *** glibc detected *** malloc(): memory corruption: 0x10013ff8 *** Post 302366864 by shamrock on Friday 30th of October 2009 02:56:20 PM
Old 10-30-2009
Quote:
Originally Posted by cdbug
Linux 3.2.3-59

Code:
struct  vertex {
        int id;
        int seq;
        int pos;
        int clique;
        int numOfVer;
        int numOfPrev;
        int numOfNext;
        int *prev;
        int *next;
        vertex *front;
        vertex *back;
        vertex *left;
        vertex *right;
};

static void make_vertex(vertex **ver, int index, int s, int ps) {
       
        *ver = NULL;
        if( *ver == NULL ) {
                *ver = (vertex *) malloc(sizeof(vertex));
                if( *ver == NULL ) {
                        printf("memory allocation error\n");
                        exit(1);
                }
        }
        (*ver)->id        = index;
        (*ver)->seq       = s;
        (*ver)->pos       = ps;
        (*ver)->clique    = 0;
        (*ver)->numOfPrev = 0;
        (*ver)->numOfVer  = 0;
        (*ver)->numOfNext = 0;
        (*ver)->prev      = NULL;
        (*ver)->next      = NULL;
        (*ver)->front     = NULL;
        (*ver)->back      = NULL;
        (*ver)->left      = NULL;
        (*ver)->right     = NULL;
}

Regards
Allocate storage for ver before mallocing memory for *ver as ver maybe pointing to some arbitrary location producing the malloc corruption.
 

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LEARN ABOUT OPENSOLARIS

elf32_fsize

elf32_fsize(3ELF)					       ELF Library Functions						 elf32_fsize(3ELF)

NAME

       elf32_fsize, elf64_fsize - return the size of an object file type

SYNOPSIS

       cc [ flag ... ] file ... -lelf [ library ... ]
       #include <libelf.h>

       size_t elf32_fsize(Elf_Type type, size_t count, unsigned ver);

       size_t elf64_fsize(Elf_Type type, size_t count, unsigned ver);

DESCRIPTION

       elf32_fsize() gives the size in bytes of the 32-bit file representation of count data objects with the given type. The library uses version
       ver to calculate the size. See elf(3ELF) and elf_version(3ELF).

       Constant values are available for the sizes of fundamental types:

	 Elf_Type  File Size Memory Size
	 ELF_T_ADDR	ELF32_FSZ_ADDR sizeof(Elf32_Addr)
	 ELF_T_BYTE	1    sizeof(unsigned char)
	 ELF_T_HALF	ELF32_FSZ_HALF sizeof(Elf32_Half)
	 ELT_T_OFF ELF32_FSZ_OFF  sizeof(Elf32_Off)
	 ELF_T_SWORD	ELF32_FSZ_SWORD     sizeof(Elf32_Sword)
	 ELF_T_WORD	ELF32_FSZ_WORD sizeof(Elf32_Word)

       elf32_fsize() returns 0 if the value of type or ver is unknown. See elf32_xlatetof(3ELF) for a list of the type values.

       For the 64-bit class, replace 32 with 64 as appropriate.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Stable			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       elf(3ELF), elf32_xlatetof(3ELF), elf_version(3ELF), libelf(3LIB), attributes(5)

SunOS 5.11							    11 Jul 2001 						 elf32_fsize(3ELF)
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