On 5/9/22 09:37, Jakub Jelinek via Gcc-patches wrote:
> On Mon, May 09, 2022 at 01:02:07PM +0530, Siddhesh Poyarekar wrote:
>> On 07/02/2022 17:37, Jakub Jelinek wrote:
>>> On Mon, Feb 07, 2022 at 05:31:58PM +0530, Siddhesh Poyarekar wrote:
>>>> Use __builtin_dynamic_object_size to get object sizes for ubsan.
>>>>
>>>> gcc/ChangeLog:
>>>>
>>>> middle-end/70090
>>>> * ubsan.cc (ubsan_expand_objsize_ifn): Allow non-constant SIZE.
>>>> (instrument_object_size): Get dynamic object size expression.
>>>>
>>>> gcc/testsuite/ChangeLog:
>>>>
>>>> middle-end/70090
>>>> * gcc.dg/ubsan/object-size-dyn.c: New test.
>>>>
>>>> Signed-off-by: Siddhesh Poyarekar <siddh...@gotplt.org>
>>>> ---
>>>> Proposing for gcc13 since I reckoned this is not feasible for stage 4.
>>>
>>> Ok for stage1.
>>>
>>> Jakub
>>>
>>
>> Hi Jakub, may I rebase and push this now?
>
> Yes.
>
> Jakub
>
Hi.
The revision caused:
$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/ubsan/bind-c-intent-out-2.f90
-fsanitize=undefined -c -O
during GIMPLE pass: ubsan
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/ubsan/bind-c-intent-out-2.f90:39:19:
39 | end program alloc_p
| ^
internal compiler error: Segmentation fault
0x14b45c7 crash_signal
/home/marxin/Programming/gcc/gcc/toplev.cc:322
0x7ffff78b83cf ???
/usr/src/debug/glibc-2.35-2.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0xc2cf10 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/home/marxin/Programming/gcc/gcc/tree.h:3570
0x19100d1 build_call_expr_loc_array(unsigned int, tree_node*, int, tree_node**)
/home/marxin/Programming/gcc/gcc/tree.cc:10629
0x19102ff build_call_expr_loc(unsigned int, tree_node*, int, ...)
/home/marxin/Programming/gcc/gcc/tree.cc:10662
0x14f59a3 instrument_object_size
/home/marxin/Programming/gcc/gcc/ubsan.cc:2173
0x14f6770 execute
/home/marxin/Programming/gcc/gcc/ubsan.cc:2428
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Martin
