[Bug bootstrap/71819] New: [7 regression] Bootstrap fail on S/390 32 bit starting with r238078

["krebbel at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71819

            Bug ID: 71819
           Summary: [7 regression] Bootstrap fail on S/390 32 bit starting
                    with r238078
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: krebbel at gcc dot gnu.org
  Target Milestone: ---

Reghunt found that this failed occurred first after r238078

There appear to be two errors in the build output:

/home/andreas/bisect/build/./prev-gcc/xg++
-B/home/andreas/bisect/build/./prev-gcc/
-B/home/andreas/bisect/gcc-238078-install/s390-ibm-linux-gnu/bin/ -nostdinc++
-B/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/src/.libs
-B/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/libsupc++/.libs

-I/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/include/s390-ibm-linux-gnu
 -I/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/include 
-I/home/andreas/gcc/libstdc++-v3/libsupc++
-L/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/src/.libs
-L/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/libsupc++/.libs
-c   -g -O2 -gtoggle -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common
 -DHAVE_CONFIG_H -DGENERATOR_FILE -fno-PIE -I. -Ibuild
-I/home/andreas/bisect/../gcc/gcc -I/home/andreas/bisect/../gcc/gcc/build
-I/home/andreas/bisect/../gcc/gcc/../include 
-I/home/andreas/bisect/../gcc/gcc/../libcpp/include  \
        -o build/gencodes.o /home/andreas/bisect/../gcc/gcc/gencodes.c
/home/andreas/bisect/../gcc/gcc/genattrtab.c: In function 'rtx_def*
simplify_and_tree(rtx, rtx_def**, int, int)':
/home/andreas/bisect/../gcc/gcc/genattrtab.c:2131:1: error: non-trivial
conversion at assignment
 simplify_and_tree (rtx exp, rtx *pterm, int insn_code, int insn_index)
 ^~~~~~~~~~~~~~~~~
struct rtx_def *
int
# VUSE <.MEM_49>
pretmp_132 = MEM[(union u *)exp_106 + 8B];
/home/andreas/bisect/../gcc/gcc/genattrtab.c:2131:1: error: non-trivial
conversion at assignment
struct rtx_def *
int
# VUSE <.MEM_49>
pretmp_141 = MEM[(union u *)_16 + 8B];

....

/home/andreas/bisect/build/./prev-gcc/xg++
-B/home/andreas/bisect/build/./prev-gcc/
-B/home/andreas/bisect/gcc-238078-install/s390-ibm-linux-gnu/bin/ -nostdinc++
-B/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/src/.libs
-B/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/libsupc++/.libs

-I/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/include/s390-ibm-linux-gnu
 -I/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/include 
-I/home/andreas/gcc/libstdc++-v3/libsupc++
-L/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/src/.libs
-L/home/andreas/bisect/build/prev-s390-ibm-linux-gnu/libstdc++-v3/libsupc++/.libs
-c   -g -O2 -gtoggle -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common
 -DHAVE_CONFIG_H -DGENERATOR_FILE -fno-PIE -I. -Ibuild
-I/home/andreas/bisect/../gcc/gcc -I/home/andreas/bisect/../gcc/gcc/build
-I/home/andreas/bisect/../gcc/gcc/../include 
-I/home/andreas/bisect/../gcc/gcc/../libcpp/include  \
        -o build/gencheck.o /home/andreas/bisect/../gcc/gcc/gencheck.c
0x11538b3 verify_gimple_in_cfg(function*, bool)
        /home/andreas/bisect/../gcc/gcc/tree-cfg.c:5212
0xfbb427 execute_function_todo
        /home/andreas/bisect/../gcc/gcc/passes.c:1964
0xfba2b3 do_per_function
        /home/andreas/bisect/../gcc/gcc/passes.c:1648
0xfbb677 execute_todo
        /home/andreas/bisect/../gcc/gcc/passes.c:2016
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[3]: *** [build/genattrtab.o] Error 1
make[3]: *** Waiting for unfinished jobs....