https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71707
Bug ID: 71707
Summary: [regression] ICE in get_stridx_plus_constant
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: clyon at gcc dot gnu.org
Target Milestone: ---
As discussed in https://gcc.gnu.org/ml/gcc-patches/2016-06/msg01975.html,
commit 237841 (PR tree-optimization/71625) causes an ICE in
get_stridx_plus_constant while building glibc on arm targets.
I'm attaching ns_print.i, which was compiled with the following command:
arm-none-linux-gnueabi-gcc ns_print.i -c -O2 -fPIC
ns_print.c: In function 'ns_sprintrrf':
ns_print.c:94:1: internal compiler error: in get_stridx_plus_constant, at
tree-ssa-strlen.c:680
ns_sprintrrf(const u_char *msg, size_t msglen,
^~~~~~~~~~~~
0xcb5a4f get_stridx_plus_constant
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-strlen.c:680
0xcb5c91 get_addr_stridx
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-strlen.c:197
0xcb5e9b get_stridx
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-strlen.c:250
0xcba7a3 handle_pointer_plus
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-strlen.c:2028
0xcba7a3 strlen_optimize_stmt
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-strlen.c:2297
0xcba7a3 strlen_dom_walker::before_dom_children(basic_block_def*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-strlen.c:2456
0x10dd6e7 dom_walker::walk(basic_block_def*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/domwalk.c:265
0xcb4cf1 execute
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-strlen.c:2528
GCC was configured with:
--target=arm-none-linux-gnueabi --with-float=soft --enable-build-with-cxx
--with-mode=arm --with-cpu=cortex-a9
