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Always add input_statement to statement_list 

I think this is safer than leaving an input_statement added during
open_input_bfds off the list.  There are a number of places that
fiddle with various lists and might be confused by an off-list
statement, eg. orphan handling.

	* ldlang.c (new_afile): Remove add_to_list parameter.
	(lang_add_input_file): Update new_afile calls.
	(lookup_name): Splice input_statement added by new_afile into
	statement_list after current input_file_chain entry.
	(lang_process): Update comment.
This commit is contained in:
Alan Modra 2019-09-13 11:09:41 +09:30
parent ec6c8338a8
commit 1f1f5b92e8
2 changed files with 32 additions and 17 deletions
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8
ld/ChangeLog
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@ -1,3 +1,11 @@
2019-09-13 Alan Modra <amodra@gmail.com>
* ldlang.c (new_afile): Remove add_to_list parameter.
(lang_add_input_file): Update new_afile calls.
(lookup_name): Splice input_statement added by new_afile into
statement_list after current input_file_chain entry.
(lang_process): Update comment.
2019-09-12 Alan Modra <amodra@gmail.com>
* ldlang.c (print_input_statement): Do not exclude linker created

41
ld/ldlang.c
View File

@ -1080,22 +1080,13 @@ new_statement (enum statement_enum type,
static lang_input_statement_type *
new_afile (const char *name,
lang_input_file_enum_type file_type,
const char *target,
bfd_boolean add_to_list)
const char *target)
{
lang_input_statement_type *p;
lang_has_input_file = TRUE;
if (add_to_list)
p = new_stat (lang_input_statement, stat_ptr);
else
{
p = stat_alloc (sizeof (lang_input_statement_type));
p->header.type = lang_input_statement_enum;
p->header.next = NULL;
}
p = new_stat (lang_input_statement, stat_ptr);
memset (&p->the_bfd, 0,
sizeof (*p) - offsetof (lang_input_statement_type, the_bfd));
p->target = target;
@ -1177,12 +1168,12 @@ lang_add_input_file (const char *name,
within the sysroot subdirectory.) */
unsigned int outer_sysrooted = input_flags.sysrooted;
input_flags.sysrooted = 0;
ret = new_afile (sysrooted_name, file_type, target, TRUE);
ret = new_afile (sysrooted_name, file_type, target);
input_flags.sysrooted = outer_sysrooted;
return ret;
}
return new_afile (name, file_type, target, TRUE);
return new_afile (name, file_type, target);
}
struct out_section_hash_entry
@ -2861,8 +2852,25 @@ lookup_name (const char *name)
}
if (search == NULL)
search = new_afile (name, lang_input_file_is_search_file_enum,
default_target, FALSE);
{
/* Arrange to splice the input statement added by new_afile into
statement_list after the current input_file_chain tail.
We know input_file_chain is not an empty list, and that
lookup_name was called via open_input_bfds. Later calls to
lookup_name should always match an existing input_statement. */
lang_statement_union_type **tail = stat_ptr->tail;
lang_statement_union_type **after
= (void *) ((char *) input_file_chain.tail
- offsetof (lang_input_statement_type, next_real_file)
+ offsetof (lang_input_statement_type, header.next));
lang_statement_union_type *rest = *after;
stat_ptr->tail = after;
search = new_afile (name, lang_input_file_is_search_file_enum,
default_target);
*stat_ptr->tail = rest;
if (*tail == NULL)
stat_ptr->tail = tail;
}
/* If we have already added this file, or this file is not real
don't add this file. */
@ -7501,8 +7509,7 @@ lang_process (void)
if (*prev != (void *) plugin_insert->next_real_file)
{
/* We didn't find the expected input statement.
This can happen due to lookup_name creating input
statements not linked into the statement list. */
Fall back to adding after plugin_insert. */
prev = &plugin_insert->header.next;
}
}