/usr/src/gcc-4.8/debian/libasan0.symbols.32 is in gcc-4.8-source 4.8.2-19ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | _Znaj@Base 4.8
_ZnajRKSt9nothrow_t@Base 4.8
_Znwj@Base 4.8
_ZnwjRKSt9nothrow_t@Base 4.8
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