How Can I Demangle GCC\'s Mangled Type Names from typeid.name()?

Demangling Unmangled Type Names with typeid.name() in GCC

When utilizing typeid.name() to retrieve the name of a type, different compilers may provide varying results. For instance, GCC is known to return a "mangled" name, while Visual C delivers an unmangled name.

This discrepancy stems from the fact that typeid.name()'s return value is implementation-defined. As per the C standard, each implementation has the discretion to determine how to represent type names.

In the case of GCC, the name returned by typeid.name() carries additional information known as a "mangled name." This format includes decorations that serve internal compiler purposes. To obtain the unmangled type name, you can employ the c filt command or the __cxa_demangle function.

c filt 4Blah

Output: struct Blah

__cxa_demangle("4Blah", nullptr, nullptr, nullptr)

Output: Blah

By utilizing these tools, you can demangle the decorated type names and retrieve the desired unmangled representation.

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