> Ah, yes. That is what I thought first too. But gcc is sneaky :)
> If gcc detects gas has support for the .loc directive, it will not
> output the section itself, but let gas generate it (because the
> assembler has exact info on instruction sizes).
Sure, but there is no .loc in there! In fact, it's gas that is quite
sneaky here.
/* If there is no line information and no non-empty .debug_info
section, or if there is both a non-empty .debug_info and a non-empty
.debug_line, then we do nothing. */
So its the presence of some .section .debug_info content (even without any
.file, let alone .loc) that makes it emit the .debug_line header.
If there is a bug here, it's a gas bug.
Thanks,
Roland
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