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re PR lto/79061 ([LTO][ASAN] LTO plus ASAN fails with "AddressSanitizer: initialization-order-fiasco") 

PR lto/79061
gcc/

	* asan.c (get_translation_unit_decl): New function.
	(asan_add_global): Extract modules file name from globals
	TRANSLATION_UNIT_DECL in lto mode.
	* tree.c (build_translation_unit_decl): Add source location for newly
	built TRANSLATION_UNIT_DECL.

gcc/lto/

	* lto.c (lto_read_decls): accept location cache for
	TRANSLATION_UNIT_DECL.
	
gcc/testsuite/

	* gcc.dg/cpp/mi1.c: Adjust testcase.
	* gcc.dg/pch/cpp-3.c: Likewise.

From-SVN: r244581
This commit is contained in:
Maxim Ostapenko 2017-01-18 16:06:31 +00:00 committed by Maxim Ostapenko
parent 0c6299bbfd
commit 5807fb918d
8 changed files with 58 additions and 5 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2017-01-18 Maxim Ostapenko <m.ostapenko@samsung.com>
PR lto/79061
* asan.c (get_translation_unit_decl): New function.
(asan_add_global): Extract modules file name from globals
TRANSLATION_UNIT_DECL in lto mode.
* tree.c (build_translation_unit_decl): Add source location for newly
built TRANSLATION_UNIT_DECL.
2017-01-18 Matthias Klose <doko@ubuntu.com>
* doc/install.texi: Allow default for --with-target-bdw-gc-include.

25
gcc/asan.c
View File

@ -2372,6 +2372,22 @@ asan_needs_odr_indicator_p (tree decl)
&& TREE_PUBLIC (decl));
}
/* For given DECL return its corresponding TRANSLATION_UNIT_DECL. */
static const_tree
get_translation_unit_decl (tree decl)
{
const_tree context = decl;
while (context && TREE_CODE (context) != TRANSLATION_UNIT_DECL)
{
if (TREE_CODE (context) == BLOCK)
context = BLOCK_SUPERCONTEXT (context);
else
context = get_containing_scope (context);
}
return context;
}
/* Append description of a single global DECL into vector V.
TYPE is __asan_global struct type as returned by asan_global_struct. */
@ -2391,7 +2407,14 @@ asan_add_global (tree decl, tree type, vec<constructor_elt, va_gc> *v)
pp_string (&asan_pp, "<unknown>");
str_cst = asan_pp_string (&asan_pp);
pp_string (&module_name_pp, main_input_filename);
const char *filename = main_input_filename;
if (in_lto_p)
{
const_tree translation_unit_decl = get_translation_unit_decl (decl);
if (translation_unit_decl)
filename = DECL_SOURCE_FILE (translation_unit_decl);
}
pp_string (&module_name_pp, filename);
module_name_cst = asan_pp_string (&module_name_pp);
if (asan_needs_local_alias (decl))

6
gcc/lto/ChangeLog
View File

@ -1,3 +1,9 @@
2017-01-18 Maxim Ostapenko <m.ostapenko@samsung.com>
PR lto/79061
* lto.c (lto_read_decls): accept location cache for
TRANSLATION_UNIT_DECL.
2017-01-11 Jakub Jelinek <jakub@redhat.com>
PR middle-end/50199

8
gcc/lto/lto.c
View File

@ -1707,7 +1707,13 @@ lto_read_decls (struct lto_file_decl_data *decl_data, const void *data,
&& (TREE_CODE (first) == IDENTIFIER_NODE
|| TREE_CODE (first) == INTEGER_CST
|| TREE_CODE (first) == TRANSLATION_UNIT_DECL))
continue;
{
/* For TRANSLATION_UNIT_DECL we need to accept location cache now
to avoid possible reverting during following unify_scc call. */
if (TREE_CODE (first) == TRANSLATION_UNIT_DECL)
data_in->location_cache.accept_location_cache ();
continue;
}
/* Try to unify the SCC with already existing ones. */
if (!flag_ltrans

6
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2017-01-18 Maxim Ostapenko <m.ostapenko@samsung.com>
PR lto/79061
* gcc.dg/cpp/mi1.c: Adjust testcase.
* gcc.dg/pch/cpp-3.c: Likewise.
2016-01-18 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* gcc.target/powerpc/p8vector-builtin-8.c: Add new form for

2
gcc/testsuite/gcc.dg/cpp/mi1.c
View File

@ -13,7 +13,7 @@
/* { dg-do compile }
{ dg-options "-H" }
{ dg-message "mi1c\.h\n\[^\n\]*mi1cc\.h\n\[^\n\]*mi1nd\.h\n\[^\n\]*mi1ndp\.h\n\[^\n\]*mi1x\.h" "redundant include check" { target *-*-* } 0 } */
{ dg-message "mi1c\.h\n\[^\n\]*mi1cc\.h\n\[^\n\]*mi1nd\.h\n\[^\n\]*mi1ndp\.h\n\[^\n\]*mi1x\.h\n\[^\n\]*mi1\.c" "redundant include check" { target *-*-* } 0 } */
#include "mi1c.h"
#include "mi1c.h"

2
gcc/testsuite/gcc.dg/pch/cpp-3.c
View File

@ -1,7 +1,7 @@
/* PR preprocessor/36649 */
/* { dg-do compile } */
/* { dg-options "-H -I." } */
/* { dg-message "cpp-3.h\[^\n\]*(\n\[^\n\]*cpp-3.c)?\n\[^\n\]*cpp-3a.h\n\[^\n\]*cpp-3b.h" "" { target *-*-* } 0 } */
/* { dg-message "cpp-3.h\[^\n\]*(\n\[^\n\]*cpp-3.c)?\n\[^\n\]*cpp-3a.h\n\[^\n\]*cpp-3b.h\n\[^\n\]*cpp-3.c" "" { target *-*-* } 0 } */
#include "cpp-3.h"
#include "cpp-3a.h"

5
gcc/tree.c
View File

@ -4758,7 +4758,10 @@ vec<tree, va_gc> *all_translation_units;
tree
build_translation_unit_decl (tree name)
{
tree tu = build_decl (UNKNOWN_LOCATION, TRANSLATION_UNIT_DECL,
linemap_add (line_table, LC_ENTER, false, main_input_filename, 1);
location_t loc = linemap_line_start (line_table, 1, 0);
linemap_add (line_table, LC_LEAVE, false, NULL, 0);
tree tu = build_decl (loc, TRANSLATION_UNIT_DECL,
name, NULL_TREE);
TRANSLATION_UNIT_LANGUAGE (tu) = lang_hooks.name;
vec_safe_push (all_translation_units, tu);