[lldb-dev] How to deal with STL type names in C++ code?

[Enrico Granata via lldb-dev]

Hi Eugene,

> On Aug 6, 2015, at 2:02 PM, Eugene Birukov via lldb-dev <lldb-dev at lists.llvm.org> wrote:
> 
> Hi,
> 
> I am using LLDB C++ API to create custom debugger and trying to dump variables with their types. To do that I am using SBValue.GetTypeName() API. Some types are OK, but some others - especially ones related to STL - are quite unreadable:
> 

those type names are the actual fully-specialized STL type names. I am not sure how to control GDB to stop truncating your string formatting, but after the “…” there actually is more text
It looks like what you have is std::unique_ptr<std::vector<std::string> > > and those templates all take more arguments which are defaulted so you don’t have to type them in code - but are reflected in the type name

> (gdb) p value.GetTypeName()
> $1 = 0x7fffe419be40 "std::__1::unique_ptr<std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char"...
> (gdb) p value.GetDisplayTypeName()
> $2 = 0x7fffe419be40 "std::__1::unique_ptr<std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char"...
> (gdb) 
> 
> So, is there any way to convert them into some more human-friendly form?

Not currently. What one would have to do is hook into the C++ type printing logic such that it would know to leave out these extra template arguments when they have a default value

> 
> Thanks,
> Eugene
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Thanks,
- Enrico
📩 egranata@.com ☎️ 27683

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