hiraditya added a comment.

In https://reviews.llvm.org/D25624#582756, @mehdi_amini wrote:

> In https://reviews.llvm.org/D25624#582752, @mehdi_amini wrote:
>
> > (The commit message is confusing, it mentions "Currently basic_string's 
> > destructor is not getting inlined. So adding 'inline' attribute to 
> > ~basic_string()", please add the quote of the standard and mention that it 
> > enables instantiation)
>
>
> (i.e. "inline" does not cause directly "inlining" here, this comes as a side 
> effect of just starting to emit it)


You are right. The problem was that the function definition wasn't getting 
generated in the translation unit as a result the inliner cannot inline. For 
some reason clang does not generate the definition of available_externally 
functions. Sorry for the confusion, this patch is sitting for a long time so I 
forgot about it. Just adding inline should also have the same effect. I can 
commit a separate patch with just the inline specifier if there is an agreement.


https://reviews.llvm.org/D25624



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