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PR27100, final link failed: bad value

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The failure on this PR is due to using the same bfd section for
multiple output sections.  Commit 21401fc7bf67 managed to create
duplicate linker script output section statements, but not the actual
bfd sections.

	PR 27100
	* ldlang.h (lang_output_section_statement_type): Add dup_output.
	* ldlang.c (lang_output_section_statement_lookup): Set dup_output.
	(init_os): Test dup_output rather than constraint.
	* testsuite/ld-scripts/pr27100.d,
	* testsuite/ld-scripts/pr27100.s,
	* testsuite/ld-scripts/pr27100.t: New test.
	* testsuite/ld-scripts/data.exp: Run it.  Don't exclude aout here.
	* testsuite/ld-scripts/data.d: Do so here instead.
	* testsuite/ld-scripts/fill.d: Likewise.
	* testsuite/ld-scripts/fill16.d: Likewise.
This commit is contained in:
Alan Modra
2020-12-24 15:56:23 +10:30
parent 62fa7b3c6a
commit de34d42812
10 changed files with 38 additions and 9 deletions
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4
ld/ldlang.c
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@ -1526,6 +1526,8 @@ lang_output_section_statement_lookup (const char *name,
entry->s.output_section_statement.name = name;
entry->s.output_section_statement.constraint = constraint;
entry->s.output_section_statement.dup_output = (create == 2
|| constraint == SPECIAL);
return &entry->s.output_section_statement;
}
@ -2387,7 +2389,7 @@ init_os (lang_output_section_statement_type *s, flagword flags)
if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
einfo (_("%F%P: illegal use of `%s' section\n"), DISCARD_SECTION_NAME);
if (s->constraint != SPECIAL)
if (!s->dup_output)
s->bfd_section = bfd_get_section_by_name (link_info.output_bfd, s->name);
if (s->bfd_section == NULL)
s->bfd_section = bfd_make_section_anyway_with_flags (link_info.output_bfd,