Messages in this thread | | | Date | Fri, 9 Mar 2018 09:04:28 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 12/12] efi: make const array 'apple' static |
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* Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
> > Also, would it make sense to rename it to something more descriptive like > > "apple_unicode_str[]" or so? > > > > Plus an unicode string literal initializer would be pretty descriptive as well, > > instead of the weird looking character array, i.e. something like: > > > > static efi_char16_t const apple_unicode_str[] = u"Apple"; > > > > ... or so? > > > > is u"xxx" the same as L"xxx"?
So "L" literals map to wchar_t, which wide character type is implementation specific IIRC, could be 16-bit or 32-bit wide.
u"" literals OTOH are specified by the C11 spec to be char16_t, i.e. 16-bit wide characters - which I assume is the EFI type as well?
> In any case, this is for historical reasons: at some point (and I > don't remember the exact details) we had a conflict at link time with > objects using 4 byte wchar_t, so we started using this notation to be > independent of the size of wchar_t. That issue no longer exists so we > should be able to get rid of this.
Yes, my guess is that those problems were due to L"xyz" mapping to wchar_t and having a different type in the kernel build and the host build side - but u"xyz" should solve that.
Thanks,
Ingo
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