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POWhy am I getting this memory access error 'double free or corruption'?
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12548868
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2012-09-23T00:49:56.537
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2017-09-22T14:49:21.873
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2012-09-23T01:11:32.513
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I am getting the following type of error. I know it has something to do with me improperly accessing memory, but I don't exactly how. Please help me see where I have gone wrong. *note I have simplified my function and it is not obvious what the variables are doing, I just need to know how I am implementing the function incorrectly or where I am misusing memory access. <pre><code>int my_function(char const *file_name, size_t max) { myStruct.pStore = fopen(file_name,"w+"); //pStore is a FILE* myStruct.max = max; // fill the with zeros ('0') int numberOfZeros = max*SIZE; char zeros[numberOfZeros]; int i=0; while(i<numberOfZeros) // insert zero's { zeros[i]='0'; i++; } fwrite(zeros,sizeof(char),numberOfZeros,myStruct.pStore); fclose(myStruct.pStore); return EXIT_SUCCESS; </code></pre> The error I am given: <pre><code>*** glibc detected *** /home/.../: double free or corruption (top): 0x0804c008 *** ======= Backtrace: ========= /lib/i386-linux-gnu/libc.so.6(+0x73e42)[0xb7e82e42] /lib/i386-linux-gnu/libc.so.6(fclose+0x154)[0xb7e72384] /home/2012/spatar/cs/specs/release[0x80486b0] /home/2012/spatar/cs/specs/release[0x8048acd] /home/2012/spatar/cs/specs/release[0x8048af0] /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb7e284d3] /home/2012/spatar/cs/specs/release[0x80484e1] ======= Memory map: ======== 08048000-0804a000 r-xp 00000000 00:3b 2331829 /home/2012/spatar/cs/Aspecs/release 0804a000-0804b000 r--p 00001000 00:3b 2331829 /home/2012/spatar/cs/specs/release 0804b000-0804c000 rw-p 00002000 00:3b 2331829 /home/2012/spatar/cs/specs/release 0804c000-0806d000 rw-p 00000000 00:00 0 [heap] b7e0e000-b7e0f000 rw-p 00000000 00:00 0 b7e0f000-b7fae000 r-xp 00000000 00:11 5415 /lib/i386-linux-gnu/libc-2.15.so b7fae000-b7fb0000 r--p 0019f000 00:11 5415 /lib/i386-linux-gnu/libc-2.15.so b7fb0000-b7fb1000 rw-p 001a1000 00:11 5415 /lib/i386-linux-gnu/libc-2.15.so b7fb1000-b7fb4000 rw-p 00000000 00:00 0 b7fbc000-b7fd8000 r-xp 00000000 00:11 5426 /lib/i386-linux-gnu/libgcc_s.so.1 b7fd8000-b7fd9000 r--p 0001b000 00:11 5426 /lib/i386-linux-gnu/libgcc_s.so.1 b7fd9000-b7fda000 rw-p 0001c000 00:11 5426 /lib/i386-linux-gnu/libgcc_s.so.1 b7fda000-b7fdd000 rw-p 00000000 00:00 0 b7fdd000-b7fde000 r-xp 00000000 00:00 0 [vdso] b7fde000-b7ffe000 r-xp 00000000 00:11 5405 /lib/i386-linux-gnu/ld-2.15.so b7ffe000-b7fff000 r--p 0001f000 00:11 5405 /lib/i386-linux-gnu/ld-2.15.so b7fff000-b8000000 rw-p 00020000 00:11 5405 /lib/i386-linux-gnu/ld-2.15.so bffdf000-c0000000 rw-p 00000000 00:00 0 [stack] </code></pre>
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Why am I getting this memory access error 'double free or corruption'?
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