[lldb-dev] Compilation failure on FreeBSD 8.

[Filipe Cabecinhas]

Hi,

The versions of gcc that are available on FreeBSD (even on the 9.0 beta,
though I haven't tested them all) will yield that error. clang compiles it
fine, though. What I did was use clang to compile that file. You can also
compile lldb using only clang.

If you have any more problems, please tell. But I remind you that the
FreeBSD port is still very incomplete and can't be used for debugging, yet.

Regards,

  Filipe

On Thu, Sep 22, 2011 at 07:29, Enrico Granata <granata.enrico at gmail.com>wrote:

> The reason for this error looks like an ambiguity in template resolution.
> In order to implement a "special" behavior for regex-based summaries, the
> Delete_Impl call uses template specialization:
>     template<typename K, typename V>
>     bool
>     Delete_Impl (ConstString type, Types<K,V>)
> vs.
>     template<typename V>
>     bool
>     Delete_Impl (ConstString type, Types<lldb::RegularExpressionSP,V>)
>
> Your compiler seems to be inferring correctly the template arguments, but
> has a doubt on whether it should pick the specialized function, or the
> general one replacing K = lldb::RegularExpressionSP
>
> This is the first time I see a compiler being confused at this (LLDB is
> routinely compiled with clang and I guess several people compile it on Linux
> with GCC as well). This idiom is actually a quite common way to obtain
> one-function-specialization-inside-class-template.
>
> In order to try and solve this, could you try to clean your LLDB build
> folder and try to build LLDB alone without the rest of LLVM, or using a
> different more recent version of GCC?
>
> - *Enrico Granata*
>
> On Sep 22, 2011, at 4:07 PM, arrowdodger wrote:
>
> Hello. I'm compiling trunk LLVM + trunk lldb on i386 FreeBSD 8 system (GCC
> 4.2.1) and see this error:
>
> /usr/code/llvm/tools/lldb/source/Commands/../../include/lldb/Core/FormatNavigator.h:
> In member function 'bool lldb_private::FormatNavigator<KeyType,
> ValueType>::Delete(lldb_private::ConstString) [with KeyType =
> lldb_private::SharingPtr<lldb_private::RegularExpression>, ValueType =
> lldb_private::SummaryFormat]':
> CommandObjectType.cpp:1064:   instantiated from here
> /usr/code/llvm/tools/lldb/source/Commands/../../include/lldb/Core/FormatNavigator.h:269:
> error: call of overloaded 'Delete_Impl(lldb_private::ConstString&,
> lldb_private::FormatNavigator<lldb_private::SharingPtr<lldb_private::RegularExpression>,
> lldb_private::SummaryFormat>::Types<lldb_private::SharingPtr<lldb_private::RegularExpression>,
> lldb_private::SummaryFormat>)' is ambiguous
> /usr/code/llvm/tools/lldb/source/Commands/../../include/lldb/Core/FormatNavigator.h:333:
> note: candidates are: bool lldb_private::FormatNavigator<KeyType,
> ValueType>::Delete_Impl(lldb_private::ConstString,
> lldb_private::FormatNavigator<KeyType, ValueType>::Types<K, V>) [with K =
> lldb_private::SharingPtr<lldb_private::RegularExpression>, V =
> lldb_private::SummaryFormat, KeyType =
> lldb_private::SharingPtr<lldb_private::RegularExpression>, ValueType =
> lldb_private::SummaryFormat]
> /usr/code/llvm/tools/lldb/source/Commands/../../include/lldb/Core/FormatNavigator.h:340:
> note:                 bool lldb_private::FormatNavigator<KeyType,
> ValueType>::Delete_Impl(lldb_private::ConstString,
> lldb_private::FormatNavigator<KeyType,
> ValueType>::Types<lldb_private::SharingPtr<lldb_private::RegularExpression>,
> V>) [with V = lldb_private::SummaryFormat, KeyType =
> lldb_private::SharingPtr<lldb_private::RegularExpression>, ValueType =
> lldb_private::SummaryFormat]
>
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