https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111812
--- Comment #4 from seurer at gcc dot gnu.org ---
I tried a build with r14-4659-ga22eeaca5ce753 and I see the following which
looks like it might be the mentioned union issues.
g++ -std=gnu++11 -fno-PIE -c -g -O2 -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 -fno-common
-DHAVE_CONFIG_H -fno-PIE -I. -I. -I/home/seurer/gcc/git/gcc-test/gcc
-I/home/seurer/gcc/git/gcc-test/gcc/.
-I/home/seurer/gcc/git/gcc-test/gcc/../include
-I/home/seurer/gcc/git/gcc-test/gcc/../libcpp/include
-I/home/seurer/gcc/git/gcc-test/gcc/../libcody
-I/home/seurer/gcc/git/build/gcc-test/./gmp -I/home/seurer/gcc/git/gcc-test/gmp
-I/home/seurer/gcc/git/build/gcc-test/./mpfr/src
-I/home/seurer/gcc/git/gcc-test/mpfr/src
-I/home/seurer/gcc/git/gcc-test/mpc/src
-I/home/seurer/gcc/git/gcc-test/gcc/../libdecnumber
-I/home/seurer/gcc/git/gcc-test/gcc/../libdecnumber/dpd -I../libdecnumber
-I/home/seurer/gcc/git/gcc-test/gcc/../libbacktrace
-I/home/seurer/gcc/git/build/gcc-test/./isl/include
-I/home/seurer/gcc/git/gcc-test/isl/include -o cse.o -MT cse.o -MMD -MP -MF
./.deps/cse.TPo /home/seurer/gcc/git/gcc-test/gcc/cse.cc
In file included from /home/seurer/gcc/git/gcc-test/gcc/cse.cc:25:0:
/home/seurer/gcc/git/gcc-test/gcc/rtl.h:66:26: warning: 'rtx_def::code' is too
small to hold all values of 'enum rtx_code' [enabled by default]
#define RTX_CODE_BITSIZE 8
^
/home/seurer/gcc/git/gcc-test/gcc/rtl.h:318:33: note: in expansion of macro
'RTX_CODE_BITSIZE'
ENUM_BITFIELD(rtx_code) code: RTX_CODE_BITSIZE;
^
/home/seurer/gcc/git/gcc-test/gcc/rtl.h:66:26: warning:
'qty_table_elem::comparison_code' is too small to hold all values of 'enum
rtx_code' [enabled by default]
#define RTX_CODE_BITSIZE 8
^
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:252:45: note: in expansion of macro
'RTX_CODE_BITSIZE'
ENUM_BITFIELD(rtx_code) comparison_code : RTX_CODE_BITSIZE;
^
/home/seurer/gcc/git/gcc-test/gcc/cse.cc: In function 'void
add_to_set(vec*, rtx)':
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::rtl' [-Wmissing-field-initializers]
struct set entry = {};
^
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src_elt' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src_hash' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::dest_hash' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::inner_dest' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src_in_memory' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src_volatile' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::mode' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src_const_hash' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src_const' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::src_const_elt' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4236:23: warning: missing initializer
for member 'set::dest_addr_elt' [-Wmissing-field-initializers]
/home/seurer/gcc/git/gcc-test/gcc/cse.cc: In function 'void
cse_insn(rtx_insn*)':
/home/seurer/gcc/git/gcc-test/gcc/cse.cc:4954:19: error: use of deleted
function 'rtx_def::rtx_def()'
struct rtx_def memory_extend_buf;
^
In file included from /home/seurer/gcc/git/gcc-test/gcc/cse.cc:25:0:
/home/seurer/gcc/git/gcc-test/gcc/rtl.h:313:38: note: 'rtx_def::rtx_def()' is
implicitly deleted because the default definition would be ill-formed:
chain_prev ("RTX_PREV (&%h)"))) rtx_def {
^
/home/seurer/gcc/git/gcc-test/gcc/rtl.h:313:38: error: use of deleted function
'rtx_def::u::u()'
/home/seurer/gcc/git/gcc-test/gcc/rtl.h:445:9: note: 'rtx_def::u::u()' is
implicitly deleted because the default definition would be ill-formed:
union u {
^
