OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR sanitizer/67941 (calls on function pointer from a captureless lambda cause ubsan warning)

Browse Source 
PR c++/67941
	* lambda.c (maybe_add_lambda_conv_op): Mark _FUN as
	no_sanitize_undefined.

From-SVN: r230897
This commit is contained in:
Jason Merrill 2015-11-25 13:58:11 -05:00 committed by Jason Merrill
parent 917124c302
commit 5546e16045
3 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gcc/cp/ChangeLog
View File

@ -1,5 +1,9 @@
2015-11-25 Jason Merrill <jason@redhat.com>
PR c++/67941
* lambda.c (maybe_add_lambda_conv_op): Mark _FUN as
no_sanitize_undefined.
* cp-ubsan.c (cp_ubsan_instrument_vptr_p): Use
do_ubsan_in_current_function.

6
gcc/cp/lambda.c
View File

@ -1053,6 +1053,12 @@ maybe_add_lambda_conv_op (tree type)
if (generic_lambda_p)
fn = add_inherited_template_parms (fn, DECL_TI_TEMPLATE (callop));
/* Don't UBsan this function; we're deliberately calling op() with a null
object argument. */
tree attrs = build_tree_list (get_identifier ("no_sanitize_undefined"),
NULL_TREE);
cplus_decl_attributes (&fn, attrs, 0);
add_method (type, fn, NULL_TREE);
if (nested)

5
gcc/testsuite/g++.dg/ubsan/null-6.C Normal file
View File

@ -0,0 +1,5 @@
// PR c++/67941
// { dg-do run { target c++11 } }
// { dg-options -fsanitize=null }
int main(){ (+[](){})(); }