https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79052
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Here's a complete set of warnings from a bootstrap configured with
--with-build-config=bootstrap-ubsan and --disable-werror. I think GCC builds
libraries without -Werror so those are probably not causing any trouble. I
don't know what else it builds without it. Those might be worth reviewing.
I'll try to look into the -Wformat-{truncation,overflow}, -Wnonnull, and
-Walloc-size-larger-than instances when I have a chance.
Diagnostic Count Unique Files
-Wmaybe-uninitialized 327 82 41
-Wimplicit-fallthrough= 58 11 4
-Wunused-parameter 20 3 2
-Wimplicit-function-declaration 18 5 2
-Wformat-truncation= 14 5 3
-Wunused-but-set-variable 12 3 2
-Wnonnull 12 4 2
-Wformat-overflow= 8 4 4
-Wsign-compare 6 3 3
-Wcpp 4 1 1
-Wstringop-overflow= 2 1 1
-Walloc-size-larger-than= 2 1 1
-Walloc-size-larger-than Instances:
gcc/../include/libiberty.h:356
-Wcpp Instances:
/usr/include/features.h:148
-Wformat-overflow Instances:
gcc/ada/env.c:193
gcc/c/c-typeck.c:7022
gcc/c-family/c-cppbuiltin.c:848
gcc/stmt.c:670
-Wformat-truncation Instances:
libgfortran/intrinsics/date_and_time.c:165
libgfortran/intrinsics/date_and_time.c:168
libgfortran/intrinsics/date_and_time.c:172
libiberty/simple-object-coff.c:571
libiberty/simple-object-xcoff.c:655
-Wimplicit-fallthrough Instances:
gengtype-lex.c:365
libgcc/soft-fp/op-common.h:900
libgcc/soft-fp/op-common.h:913
libgcc/soft-fp/soft-fp.h:213
libgfortran/io/list_read.c:1032
libgfortran/io/list_read.c:1400
libgfortran/io/list_read.c:1523
libgfortran/io/list_read.c:1645
libgfortran/io/list_read.c:1704
libgfortran/io/list_read.c:851
libgfortran/io/list_read.c:974
-Wimplicit-function-declaration Instances:
libmpx/mpxrt/mpxrt.c:255
socket.c:127
socket.c:137
socket.c:147
socket.c:155
-Wmaybe-uninitialized Instances:
g-comlin.adb:583
g-debpoo.adb:1418
gcc/ada/atree.adb:2568
gcc/ada/checks.adb:8117
gcc/ada/checks.adb:8326
gcc/ada/checks.adb:8414
gcc/ada/exp_attr.adb:1342
gcc/ada/exp_attr.adb:1413
gcc/ada/exp_ch4.adb:4026
gcc/ada/exp_ch7.adb:8289
gcc/ada/exp_ch7.adb:8686
gcc/ada/exp_ch7.adb:8866
gcc/ada/exp_ch9.adb:3292
gcc/ada/exp_ch9.adb:6147
gcc/ada/exp_ch9.adb:9955
gcc/ada/exp_disp.adb:1060
gcc/ada/exp_disp.adb:1561
gcc/ada/exp_disp.adb:1577
gcc/ada/exp_disp.adb:1687
gcc/ada/exp_disp.adb:5186
gcc/ada/exp_dist.adb:10036
gcc/ada/exp_dist.adb:1533
gcc/ada/exp_dist.adb:1538
gcc/ada/exp_dist.adb:1555
gcc/ada/exp_dist.adb:1574
gcc/ada/freeze.adb:1177
gcc/ada/inline.adb:3471
gcc/ada/par-ch3.adb:3854
gcc/ada/par-ch9.adb:125
gcc/ada/par-ch9.adb:471
gcc/ada/put_spark_xrefs.adb:167
gcc/ada/put_spark_xrefs.adb:174
gcc/ada/sem.adb:760
gcc/ada/sem_aggr.adb:4651
gcc/ada/sem_case.adb:488
gcc/ada/sem_ch12.adb:13652
gcc/ada/sem_ch12.adb:4678
gcc/ada/sem_ch12.adb:5692
gcc/ada/sem_ch13.adb:13421
gcc/ada/sem_ch13.adb:13450
gcc/ada/sem_ch13.adb:1842
gcc/ada/sem_ch13.adb:6674
gcc/ada/sem_ch3.adb:6515
gcc/ada/sem_ch4.adb:1070
gcc/ada/sem_ch4.adb:1489
gcc/ada/sem_ch4.adb:400
gcc/ada/sem_ch4.adb:8937
gcc/ada/sem_ch5.adb:1446
gcc/ada/sem_ch5.adb:2174
gcc/ada/sem_ch6.adb:1140
gcc/ada/sem_ch6.adb:445
gcc/ada/sem_ch9.adb:3527
gcc/ada/sem_ch9.adb:651
gcc/ada/sem_ch9.adb:692
gcc/ada/sem_ch9.adb:835
gcc/ada/sem_disp.adb:772
gcc/ada/sem_eval.adb:2334
gcc/ada/sem_eval.adb:6699
gcc/ada/sem_intr.adb:170
gcc/ada/sem_prag.adb:10786
gcc/ada/sem_prag.adb:27743
gcc/ada/sem_prag.adb:5671
gcc/ada/sem_res.adb:1520
gcc/ada/sem_res.adb:4679
gcc/ada/sem_util.adb:15639
gcc/ada/sem_util.adb:15640
gcc/ada/sem_util.adb:2814
gcc/ada/sem_util.adb:9838
gcc/ada/xref_lib.adb:1039
gcc/ada/xref_lib.adb:1143
gcc/ada/xref_lib.adb:770
gcc/ada/xr_tabls.adb:1015
gcc/ada/xr_tabls.adb:1065
gcc/fortran/error.c:1084
libsanitizer/asan/asan_interceptors.cc:57
libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:2746
libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:2795
libsanitizer/sanitizer_common/sanitizer_posix.cc:213
libsanitizer/tsan/tsan_interceptors.cc:2185
libsanitizer/ubsan/ubsan_handlers_cxx.cc:109
s-stoele.adb:82
s-stusta.adb:228
-Wnonnull Instances:
adaint.c:2837
adaint.c:2839
gcc/ada/adaint.c:2837
gcc/ada/adaint.c:2839
-Wsign-compare Instances:
gcc/config/i386/i386.c:12415
gcc/dwarf2out.c:2060
gcc/varasm.c:2703
-Wstringop-overflow Instances:
gcc/ada/adaint.c:3405
-Wunused-but-set-variable Instances:
expect.c:391
terminals.c:1379
terminals.c:1564
-Wunused-parameter Instances:
socket.c:98
terminals.c:1377
terminals.c:1540
