00.fastbin_struct
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释放前
0x602000: 0x0000000000000000 0x0000000000000041 <=== chunk1
0x602010: 0x0000000000000000 0x0000000000000000
0x602020: 0x0000000000000000 0x0000000000000000
0x602030: 0x0000000000000000 0x0000000000000000
0x602040: 0x0000000000000000 0x0000000000000041 <=== chunk2
0x602050: 0x0000000000000000 0x0000000000000000
0x602060: 0x0000000000000000 0x0000000000000000
0x602070: 0x0000000000000000 0x0000000000000000
0x602080: 0x0000000000000000 0x0000000000000041 <=== chunk3
0x602090: 0x0000000000000000 0x0000000000000000
0x6020a0: 0x0000000000000000 0x0000000000000000
0x6020b0: 0x0000000000000000 0x0000000000000000
0x6020c0: 0x0000000000000000 0x0000000000020f41 <=== top chunk
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0x602000: 0x0000000000000000 0x0000000000000041 <=== chunk1
0x602010: 0x0000000000000000 0x0000000000000000
0x602020: 0x0000000000000000 0x0000000000000000
0x602030: 0x0000000000000000 0x0000000000000000
0x602040: 0x0000000000000000 0x0000000000000041 <=== chunk2
0x602050: 0x0000000000602000 0x0000000000000000
0x602060: 0x0000000000000000 0x0000000000000000
0x602070: 0x0000000000000000 0x0000000000000000
0x602080: 0x0000000000000000 0x0000000000000041 <=== chunk3
0x602090: 0x0000000000602040 0x0000000000000000
0x6020a0: 0x0000000000000000 0x0000000000000000
0x6020b0: 0x0000000000000000 0x0000000000000000
0x6020c0: 0x0000000000000000 0x0000000000020f41 <=== top chunk