tree d614a1afd069ab15693dddfebcda02524b326290
parent 51298b330327a568358da069d9808f51c6cb1672
author Alan Modra <amodra@gmail.com> 1631836281 +0930
committer Alan Modra <amodra@gmail.com> 1631919011 +0930

PR28149 part 2, purge generated line info

Mixing compiler generated line info with gas generated line info is
generally just confusing.  Also .loc directives with non-zero view
fields might reference a previous .loc.  It becomes a little more
tricky to locate that previous .loc if there might be gas generated
line info present too.  Mind you, we turn off gas generation of line
info on seeing compiler generated line info, so any reference back
won't hit gas generated line info.  At least, if the view info is
sane.  Unfortunately, gas needs to handle mangled source.

	PR 28149
	* dwarf2dbg.c (purge_generated_debug): New function.
	(dwarf2_directive_filename): Call the above.
	(out_debug_line): Don't segfault after purging.
	* testsuite/gas/i386/dwarf2-line-4.d: Update expected output.
	* testsuite/gas/i386/dwarf4-line-1.d: Likewise.
	* testsuite/gas/i386/dwarf5-line-1.d: Likewise.
	* testsuite/gas/i386/dwarf5-line-2.d: Likewise.