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PR22127, as segfaults assembling invalid .reloc 

"sec" gets set to NULL on errors in the offset expression.  This patch
disables part of the reloc expression processing that needs "sec"
valid.  I didn't disable the entire reloc expression handling so that
errors in the reloc expression are reported even when the offset
expression has an error.

	PR 22127
	* write.c (resolve_reloc_expr_symbols): Don't segfault when
	sec has been set to NULL.
This commit is contained in:
Alan Modra 2017-09-14 10:19:31 +09:30
parent 0952b7101e
commit 2578f2f307
2 changed files with 7 additions and 1 deletions
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6
gas/ChangeLog
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@ -1,3 +1,9 @@
2017-09-14 Alan Modra <amodra@gmail.com>
PR 22127
* write.c (resolve_reloc_expr_symbols): Don't segfault when
sec has been set to NULL.
2017-09-09 H.J. Lu <hongjiu.lu@intel.com>
* config/tc-i386.c (NOTRACK_PREFIX): Removed.

2
gas/write.c
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@ -724,7 +724,7 @@ resolve_reloc_expr_symbols (void)
as_bad_where (r->file, r->line, _("invalid reloc expression"));
sec = NULL;
}
else if (sym != NULL)
else if (sym != NULL && sec != NULL)
{
/* Convert relocs against local symbols to refer to the
corresponding section symbol plus offset instead. Keep