building curren head,
git clone https://git.savannah.gnu.org/git/grub.git
cd grub
git describe
grub-2.04-71-g552c9fd08
with soon(ish)-to-be-release GCC10
gcc --version
gcc (SUSE Linux) 10.0.1 20200320 (experimental) [revision
7d4549b2cd209eb621453ce13be7ffd84ffa720a]
config's OK
unset CC CPP
./bootstrap
./autogen.sh
./configure
build fails,
make V=1
...
gcc -DHAVE_CONFIG_H -I. -Wall -W -DGRUB_UTIL=1 -D_FILE_OFFSET_BITS=64
-I./include -DGRUB_FILE=\"grub-core/disk/mdraid1x_linux.c\" -I. -I. -I. -I.
-I./include -I./include -I./grub-core/lib/libgcrypt-grub/src/
-I./grub-core/lib/minilzo -I./grub-core/lib/xzembed -I./grub-core/lib/zstd
-DMINILZO_HAVE_CONFIG_H -O3 -Wall -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fmessage-length=0 -grecord-gcc-switches
-march=native -mtune=native -D_FORTIFY_SOURCE=2 -D_FILE_OFFSET_BITS=64 -Wall -W
-Wshadow -Wpointer-arith -Wundef -Wchar-subscripts -Wcomment
-Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wfloat-equal
-Wformat-extra-args -Wformat-security -Wformat-y2k -Wimplicit
-Wimplicit-function-declaration -Wimplicit-int -Wmain -Wmissing-braces
-Wmissing-format-attribute -Wmultichar -Wparentheses -Wreturn-type
-Wsequence-point -Wshadow -Wsign-compare -Wswitch -Wtrigraphs -Wunknown-pragmas
-Wunused -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value
-Wunused-variable -Wwrite-strings -Wnested-externs -Wstrict-prototypes
-Wcast-align -Wextra -Wattributes -Wendif-labels -Winit-self
-Wint-to-pointer-cast -Winvalid-pch -Wmissing-field-initializers -Wnonnull
-Woverflow -Wvla -Wpointer-to-int-cast -Wstrict-aliasing -Wvariadic-macros
-Wvolatile-register-var -Wpointer-sign -Wmissing-include-dirs
-Wmissing-prototypes -Wmissing-declarations -Wformat=2 -Werror -fno-builtin
-Wno-undef -O3 -Wall -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fmessage-length=0 -grecord-gcc-switches
-march=native -mtune=native -MT grub-core/disk/libgrubmods_a-mdraid1x_linux.o
-MD -MP -MF grub-core/disk/.deps-util/libgrubmods_a-mdraid1x_linux.Tpo -c -o
grub-core/disk/libgrubmods_a-mdraid1x_linux.o `test -f
'grub-core/disk/mdraid1x_linux.c' || echo './'`grub-core/disk/mdraid1x_linux.c
grub-core/disk/mdraid1x_linux.c: In function ‘grub_mdraid_detect’:
grub-core/disk/mdraid1x_linux.c:181:15: error: array subscript
<unknown> is outside array bounds of ‘grub_uint16_t[0]’ {aka ‘short unsigned
int[0]’} [-Werror=array-bounds]
181 | (char *) &sb.dev_roles[grub_le_to_cpu32 (sb.dev_number)]
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
grub-core/disk/mdraid1x_linux.c:98:17: note: while referencing
‘dev_roles’
98 | grub_uint16_t dev_roles[0]; /* Role in array, or 0xffff for a
spare, or 0xfffe for faulty. */
| ^~~~~~~~~
grub-core/disk/mdraid1x_linux.c:127:33: note: defined here ‘sb’
127 | struct grub_raid_super_1x sb;
| ^~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:7059:
grub-core/disk/libgrubmods_a-mdraid1x_linux.o] Error 1
make[2]: Leaving directory '/usr/local/src/grub'
make[1]: *** [Makefile:11920: all-recursive] Error 1
make[1]: Leaving directory '/usr/local/src/grub'
make: *** [Makefile:3772: all] Error 2
known/expected issue? bug-worthy? or still too early for GCC10 issues?
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