[Bug target/91441] ICE in asan_shadow_offset at asan.c:342 on riscv64 target

[kito at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91441

--- Comment #2 from kito at gcc dot gnu.org ---
Author: kito
Date: Mon Aug 19 03:21:44 2019
New Revision: 274631

URL: https://gcc.gnu.org/viewcvs?rev=274631&root=gcc&view=rev
Log:
PR target/91441 - Turn off -fsanitize=kernel-address if
TARGET_ASAN_SHADOW_OFFSET is not implemented.

 - -fsanitize=kernel-address will call targetm.asan_shadow_offset ()
   at asan_shadow_offset, so it will crash if TARGET_ASAN_SHADOW_OFFSET
   is not implemented, that's mean -fsanitize=kernel-address is not
   supported for target without TARGET_ASAN_SHADOW_OFFSET implementation.

gcc/ChangeLog:

        PR target/91441
        * toplev.c (process_options): Check TARGET_ASAN_SHADOW_OFFSET is
        implemented for -fsanitize=kernel-address, and merge check logic
        with -fsanitize=address.

testsuite/ChangeLog:

        PR target/91441
        * gcc.target/riscv/pr91441.c: New.

Added:
    trunk/gcc/testsuite/gcc.target/riscv/pr91441.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/toplev.c