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fix(debuginfo): Prefer DWARF names for Dart functions (#293)
We generally trust the symbol table to contain more accurate names than DW_AT_name and other attributes on DIEs in DWARF debug information. Some C++ compilers have been known to output truncated or simplified names into these attributes, whereas the symbol table always contains accurately mangled names. The Dart compiler is an exception to this case. Its name mangling appears to be lossy and there is no generally available demangler. Thus, we need to prefer the demangled DW_AT_name.
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