[llvm-dev] [RFH] "cannot apply asm label to function after its first use" on sparc64

[John Paul Adrian Glaubitz via llvm-dev]

Hello Harald!

On 3/10/21 7:06 PM, Harald van Dijk wrote:
> Hi,
> 
> On 10/03/2021 12:13, John Paul Adrian Glaubitz via llvm-dev wrote:
>> /usr/include/bits/stdio-ldbl.h:26:20: error: cannot apply asm label to function after its first use
>> __LDBL_REDIR_DECL (vfprintf)
>> ~~~~~~~~~~~~~~~~~~~^~~~~~~~~
>> /usr/include/sys/cdefs.h:467:26: note: expanded from macro '__LDBL_REDIR_DECL'
>>    extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name));
>>                           ^           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> 1 error generated.
>>
>> Does anyone have any idea what this error message actually means?
> 
> This error message means you cannot use the asm keyword to change how the function is named
> in the generated assembly after you have already done something that relies on that name. For instance:
> (...)
> produces the same error on Ubuntu x86-64 with libc6-dev 2.32-0ubuntu3. This is not actually a valid
> configuration, but may be good enough to make the problem easier to track down.

Thanks a lot for the very thorough explanation, I actually understand the problem now.

So, do you think this issue should be reported as a bug in glibc then?

Adrian

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