[Dwarf-Discuss] compilers generating ABI non-compliant function calls?

[Cary Coutant]

> Speculation beyond the original question:
> Given that it's a pretty common/core feature of a debugger to call functions, perhaps a start would be some way for the producer to communicate, via DWARF, that it has changed the ABI of a function and so the consumer should not try to synthesize calls to it. Providing much more functionality than that I think will amount to encoding the ad-hoc ABIs that compilers create in these situations (possible, but a fairly non-trivial proposal/enhancement to DWARF)

I believe that's what DW_AT_calling_convention and DW_CC_nocall are
for (Section 3.3.1.1).

-cary