https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92379
Bug ID: 92379 Summary: rs6000.c:5598:13: runtime error: shift exponent 64 is too large for 64-bit type 'long int' Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org Target Milestone: --- Host: powerpc64-unknown-linux-gnu Target: powerpc64-unknown-linux-gnu Build: powerpc64-unknown-linux-gnu Using latest GCC master I see following UBSAN error: $ export UBSAN_OPTIONS="print_stacktrace=1" $ make all-host -k CFLAGS="-O0 -g -fsanitize=undefined -ldl" CXXFLAGS="-O0 -g -fsanitize=undefined" LDFLAGS="-fsanitize=undefined -ldl" $ ./xgcc -B./ -B/home/marxin/bin/gcc/powerpc64le-unknown-linux-gnu/bin/ -isystem /home/marxin/bin/gcc/powerpc64le-unknown-linux-gnu/include -isystem /home/marxin/bin/gcc/powerpc64le-unknown-linux-gnu/sys-include -L/home/marxin/Programming/gcc/objdir/gcc/../ld -xc -nostdinc /dev/null -S -o /dev/null -fself-test=../../gcc/testsuite/selftests ../../gcc/config/rs6000/rs6000.c:5598:13: runtime error: shift exponent 64 is too large for 64-bit type 'long int' #0 0x13299f48 in num_insns_constant_multi ../../gcc/config/rs6000/rs6000.c:5598 #1 0x1329bc44 in num_insns_constant(rtx_def*, machine_mode) ../../gcc/config/rs6000/rs6000.c:5686 #2 0x132ce1d4 in rs6000_emit_move(rtx_def*, rtx_def*, machine_mode) ../../gcc/config/rs6000/rs6000.c:9889 #3 0x13c07e6c in gen_movdi(rtx_def*, rtx_def*) ../../gcc/config/rs6000/rs6000.md:7171 #4 0x110da4d4 in insn_gen_fn::operator()(rtx_def*, rtx_def*) const ../../gcc/recog.h:318 #5 0x1106eaac in emit_move_insn_1(rtx_def*, rtx_def*) ../../gcc/expr.c:3727 #6 0x11070318 in emit_move_insn(rtx_def*, rtx_def*) ../../gcc/expr.c:3823 #7 0x1104078c in convert_move(rtx_def*, rtx_def*, int) ../../gcc/expr.c:247 #8 0x11082cc0 in store_expr(tree_node*, rtx_def*, int, bool, bool) ../../gcc/expr.c:5656 #9 0x1107fa40 in expand_assignment(tree_node*, tree_node*, bool) ../../gcc/expr.c:5482 #10 0x10a6cea4 in expand_gimple_stmt_1 ../../gcc/cfgexpand.c:3777 #11 0x10a6d934 in expand_gimple_stmt ../../gcc/cfgexpand.c:3875 #12 0x10a86d94 in expand_gimple_basic_block ../../gcc/cfgexpand.c:5914 #13 0x10a8d504 in execute ../../gcc/cfgexpand.c:6554 #14 0x144d2b5c in test_expansion_to_rtl ../../gcc/function-tests.c:609 #15 0x144d3818 in selftest::function_tests_c_tests() ../../gcc/function-tests.c:691 #16 0x149690bc in selftest::run_tests() ../../gcc/selftest-run-tests.c:102 #17 0x123602c8 in toplev::run_self_tests() ../../gcc/toplev.c:2240 #18 0x12360924 in toplev::main(int, char**) ../../gcc/toplev.c:2318 #19 0x14ad4d8c in main ../../gcc/main.c:39 #20 0x3fff8fbd50fc in generic_start_main.isra.0 (/lib64/libc.so.6+0x250fc)