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PR c/69911 Check main_input_filename and DECL_SOURCE_FILE are not NULL.

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DECL_SOURCE_FILE can be NULL (for example when DECL_ARTIFICIAL).
So make sure to check before comparing against main_input_filename.

gcc/ChangeLog

	PR c/69911
	* cgraphunit.c (check_global_declaration): Check main_input_filename
	and DECL_SOURCE_FILE are not NULL.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r233627
This commit is contained in:
Mark Wielaard 2016-02-23 11:47:19 +00:00 committed by Mark Wielaard
parent 20c5e09e3f
commit 261e741f64
2 changed files with 12 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2016-02-23 Mark Wielaard <mjw@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR c/69911
* cgraphunit.c (check_global_declaration): Check main_input_filename
and DECL_SOURCE_FILE are not NULL.
2016-02-23 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/69666

7
gcc/cgraphunit.c
View File

@ -917,6 +917,7 @@ walk_polymorphic_call_targets (hash_set<void *> *reachable_call_targets,
static void
check_global_declaration (symtab_node *snode)
{
const char *decl_file;
tree decl = snode->decl;
/* Warn about any function declared static but not defined. We don't
@ -944,8 +945,10 @@ check_global_declaration (symtab_node *snode)
|| (((warn_unused_variable && ! TREE_READONLY (decl))
|| (warn_unused_const_variable > 0 && TREE_READONLY (decl)
&& (warn_unused_const_variable == 2
|| filename_cmp (main_input_filename,
DECL_SOURCE_FILE (decl)) == 0)))
|| (main_input_filename != NULL
&& (decl_file = DECL_SOURCE_FILE (decl)) != NULL
&& filename_cmp (main_input_filename,
decl_file) == 0))))
&& TREE_CODE (decl) == VAR_DECL))
&& ! DECL_IN_SYSTEM_HEADER (decl)
&& ! snode->referred_to_p (/*include_self=*/false)