[LLVMdev] funny llvm bug

[Serge Pavlov]

Yes, I see, the test MC/ELF/section-quoting.s checks that. Description
of this attbitute in GCC manual also implies names only, not
attributes.
Thank you for clarification!


2013/4/19 Joerg Sonnenberger <joerg at britannica.bec.de>:
> On Fri, Apr 19, 2013 at 04:38:20PM +0700, Serge Pavlov wrote:
>> This is a feature (or bug) of MCSectionELF::PrintSwitchToSection. For
>> ELF target this function tries to escape string if it founds
>> 'suspicious' character, see implementation in MCSectionELF.cpp:
>>
>>   StringRef name = getSectionName();
>>   if (name.find_first_not_of("0123456789_."
>>                              "abcdefghijklmnopqrstuvwxyz"
>>                              "ABCDEFGHIJKLMNOPQRSTUVWXYZ") == name.npos) {
>>     OS << "\t.section\t" << name;
>>   } else {
>>     OS << "\t.section\t\"";
>>
>> As section "name" is something like .mySection,\"aw\", at progbits# ,
>> this method puts all the string in quotes.
>> Other targets (COFF and MachO) doesn't have such treatment.
>>
>> If looks like the code that transforms section names should be
>> removed. Does anybody know what this transformation is for?
>
> It is exactly intended to handle section names as what they are --
> section names. The only reason it works with GCC is because it writes an
> assembler stream.
>
> reed: correct use is to declare the section with inline asm first with
> the desired attributes, followed by .previous to reset the old section.
>
> Joerg
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-- 
Thanks,
--Serge