[Bug translation/82185] New: ICE: Segmentation fault in expand_binop gcc/optabs.c:1137

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82185

            Bug ID: 82185
           Summary: ICE: Segmentation fault in expand_binop
                    gcc/optabs.c:1137
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: translation
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jcmvbkbc at gcc dot gnu.org
  Target Milestone: ---

Created attachment 42157
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42157&action=edit
preprocessed source that triggers the issue

Compiling the attached source for xtensa I get the following ICE with the
current gcc mainline:

drivers/staging/rtl8188eu/core/rtw_ap.c: In function ‘expire_timeout_chk’:
drivers/staging/rtl8188eu/core/rtw_ap.c:266:41: internal compiler error:
Segmentation fault
  if ((psta->sta_stats.last_rx_data_pkts +
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
    psta->sta_stats.last_rx_ctrl_pkts) ==
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0xe6f4ab crash_signal
        ../../gcc/gcc/toplev.c:341
0xd11ec7 expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
        ../../gcc/gcc/optabs.c:1137
0xd1397e expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
        ../../gcc/gcc/optabs.c:1632
0xa4385d expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
        ../../gcc/gcc/expr.c:9613
0x8dcf75 expand_gimple_stmt_1
        ../../gcc/gcc/cfgexpand.c:3691
0x8dd1c7 expand_gimple_stmt
        ../../gcc/gcc/cfgexpand.c:3751
0x8e4667 expand_gimple_basic_block
        ../../gcc/gcc/cfgexpand.c:5750
0x8e5e85 execute
        ../../gcc/gcc/cfgexpand.c:6357


Reproducible with the attached preprocessed source and the following command
line:

cc1 -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
-fno-common -fshort-wchar -Werror-implicit-function-declaration
-Wno-format-security -std=gnu89 -fno-PIE -ffreestanding  -mlongcalls
-mforce-no-pic -fno-delete-null-pointer-checks -Wno-frame-address -O2
--param=allow-store-data-races=0 -DCC_HAVE_ASM_GOTO -fno-reorder-blocks
-fno-ipa-cp-clone -fno-partial-inlining -Wframe-larger-than=1024
-fno-stack-protector -Wno-unused-but-set-variable -Wno-unused-const-variable
-fno-omit-frame-pointer -fno-optimize-sibling-calls
-fno-var-tracking-assignments -fno-inline-functions-called-once
-Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow
-fconserve-stack -Werror=implicit-int -Werror=strict-prototypes
-Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init
rtw_ap.i