[Lldb-commits] [PATCH] Update ObjectFileELF to detect ELF triple based on ELF notes and the ELF header.

[Todd Fiala]

Hey Greg,

On Thu, Jun 26, 2014 at 2:52 PM, Greg Clayton <gclayton at apple.com> wrote:

> A few things with respect to triple comparison:
>
> The strings really shouldn't be compared, but the arch/vendor/os enums
> should be. You might also have a "unspecified 'unknown'" or a "specified
> 'unknown'".
>
> For example if you type:
>
> (lldb) file --arch x86_64 ...
>
> The triple will be:
>
> arch = x86_64
> vendor = "unspecified 'unknown'"
> os = "unspecified 'unknown'"
>
> But if you type:
>
>
> (lldb) file --arch x86_64-unknown-unknown ...
>
> The triple will be:
>
> arch = x86_64
> vendor = "specified 'unknown'"
> os = "specified 'unknown'"
>

Is there a way to mark just the vendor portion as "unspecified 'unknown'"
without having to use the string form?  I have a code path where I want to
literally clear it meaning "I really don't know what it is, but I know it's
not what it is currently set to..."  (I hit that when the arch was
defaulting to x86_64-apple-{something} but I was refining the vendor idea
of a Linux x86_64 elf file based on note content).




-- 
Todd Fiala | Software Engineer | tfiala at google.com | 650-943-3180
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