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http://student.csdn.net/space.php?uid=115985&do=blog&id=7654

$ ldd a.out
        linux-vdso.so.1 =>  (0x00007fffdb3ff000)
        libc.so.6 => /lib64/libc.so.6 (0x0000003329000000)
        /lib64/ld-linux-x86-64.so.2 (0x0000003327c00000)
$ nm /lib64/libc.so.6 | grep strcpy
00000033290808f0 t __GI_strcpy
00000033290fc160 T __strcpy_chk
0000003329089e50 T __strcpy_small
00000033290808f0 T strcpy
"T"±íʾstrcpyµÄʵÏÖÔÚlibc.so.6µÄ´úÂë¶Î

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