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| author | Jakub Jelinek <jakub@redhat.com> | 2015-01-27 10:58:00 +0100 |
|---|---|---|
| committer | Yury Gribov <ygribov@gcc.gnu.org> | 2015-01-27 09:58:00 +0000 |
| commit | f4bdb96a3476e1e10655173cb8df2c41ea33038e (patch) | |
| tree | 07e1b3004f5755f9ffcdb4ab6e91855bc8a0dd52 /gcc | |
| parent | d9c1646658cfa8c81c1d37b8a67fa7af59748546 (diff) | |
| download | gcc-f4bdb96a3476e1e10655173cb8df2c41ea33038e.zip gcc-f4bdb96a3476e1e10655173cb8df2c41ea33038e.tar.gz gcc-f4bdb96a3476e1e10655173cb8df2c41ea33038e.tar.bz2 | |
re PR sanitizer/64741 (Incorrect size of UBSan type descriptors)
2015-01-27 Jakub Jelinek <jakub@redhat.com>
Yury Gribov <y.gribov@samsung.com>
PR ubsan/64741
* ubsan.c (ubsan_source_location): Refactor code.
(ubsan_type_descriptor): Update type size. Refactor code.
Co-Authored-By: Yury Gribov <y.gribov@samsung.com>
From-SVN: r220159
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/ubsan.c | 26 |
2 files changed, 22 insertions, 11 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7972a4d..9a7d553 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-01-27 Jakub Jelinek <jakub@redhat.com> + Yury Gribov <y.gribov@samsung.com> + + PR ubsan/64741 + * ubsan.c (ubsan_source_location): Refactor code. + (ubsan_type_descriptor): Update type size. Refactor code. + 2015-01-27 Richard Biener <rguenther@suse.de> PR tree-optimization/56273 diff --git a/gcc/ubsan.c b/gcc/ubsan.c index a9df290..036e67e 100644 --- a/gcc/ubsan.c +++ b/gcc/ubsan.c @@ -328,10 +328,9 @@ ubsan_source_location (location_t loc) else { /* Fill in the values from LOC. */ - size_t len = strlen (xloc.file); - str = build_string (len + 1, xloc.file); - TREE_TYPE (str) = build_array_type (char_type_node, - build_index_type (size_int (len))); + size_t len = strlen (xloc.file) + 1; + str = build_string (len, xloc.file); + TREE_TYPE (str) = build_array_type_nelts (char_type_node, len); TREE_READONLY (str) = 1; TREE_STATIC (str) = 1; str = build_fold_addr_expr (str); @@ -504,6 +503,13 @@ ubsan_type_descriptor (tree type, enum ubsan_print_style pstyle) tinfo = get_ubsan_type_info_for_type (type); /* Create a new VAR_DECL of type descriptor. */ + const char *tmp = pp_formatted_text (&pretty_name); + size_t len = strlen (tmp) + 1; + tree str = build_string (len, tmp); + TREE_TYPE (str) = build_array_type_nelts (char_type_node, len); + TREE_READONLY (str) = 1; + TREE_STATIC (str) = 1; + char tmp_name[32]; static unsigned int type_var_id_num; ASM_GENERATE_INTERNAL_LABEL (tmp_name, "Lubsan_type", type_var_id_num++); @@ -514,14 +520,12 @@ ubsan_type_descriptor (tree type, enum ubsan_print_style pstyle) DECL_ARTIFICIAL (decl) = 1; DECL_IGNORED_P (decl) = 1; DECL_EXTERNAL (decl) = 0; + DECL_SIZE (decl) + = size_binop (PLUS_EXPR, DECL_SIZE (decl), TYPE_SIZE (TREE_TYPE (str))); + DECL_SIZE_UNIT (decl) + = size_binop (PLUS_EXPR, DECL_SIZE_UNIT (decl), + TYPE_SIZE_UNIT (TREE_TYPE (str))); - const char *tmp = pp_formatted_text (&pretty_name); - size_t len = strlen (tmp); - tree str = build_string (len + 1, tmp); - TREE_TYPE (str) = build_array_type (char_type_node, - build_index_type (size_int (len))); - TREE_READONLY (str) = 1; - TREE_STATIC (str) = 1; tree ctor = build_constructor_va (dtype, 3, NULL_TREE, build_int_cst (short_unsigned_type_node, tkind), NULL_TREE, |