* clang build fails with `../grub-core/lib/gnulib/regex.h:682:20: error: variable length array used [-Werror,-Wvla]`
@ 2022-03-25 7:12 Paul Menzel
2022-03-25 12:24 ` Darren Kenny
0 siblings, 1 reply; 2+ messages in thread
From: Paul Menzel @ 2022-03-25 7:12 UTC (permalink / raw)
To: grub-devel
Dear GRUB folks,
On Debian sid/unstable clang 13.0.1 fails to build GRUB due to a problem
in Gnulib:
```
$ git log --oneline -1 --no-decorate
7c316e183 term/efi/console: Do not set cursor until the first text output
$ ./configure --with-platform=coreboot CC=clang && make
[…]
clang -DHAVE_CONFIG_H -I. -I.. -Wall -W -DGRUB_MACHINE_COREBOOT=1
-DGRUB_MACHINE=I386_COREBOOT -m32 -msoft-float -Xclang -msoft-float
-Xclang -no-implicit-float -nostdinc -isystem
/usr/lib/llvm-13/lib/clang/13.0.1/include -I../include -I../include
-DGRUB_FILE=\"commands/regexp.c\" -I. -I. -I.. -I.. -I../include
-I../include -I../grub-core/lib/libgcrypt-grub/src/
-I../grub-core/lib/posix_wrap -I../grub-core/lib/gnulib
-I../grub-core/lib/gnulib -D_FILE_OFFSET_BITS=64 -std=gnu99 -fno-common
-Os -m32 -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 -g
-Wredundant-decls -Wmissing-prototypes -Wmissing-declarations -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 -march=i386
-falign-functions=1 -freg-struct-return -mno-mmx -mno-sse -mno-sse2
-mno-sse3 -mno-3dnow -fno-dwarf2-cfi-asm -mno-stack-arg-probe
-fno-asynchronous-unwind-tables -fno-unwind-tables -fno-ident -Qn
-Qunused-arguments -fno-stack-protector -Werror -ffreestanding
-fno-builtin -Wno-undef -Wno-sign-compare -Wno-unused
-Wno-unused-parameter -Wno-redundant-decls -Wno-unreachable-code
-Wno-conversion -MT commands/regexp_module-regexp.o -MD -MP -MF
commands/.deps-core/regexp_module-regexp.Tpo -c -o
commands/regexp_module-regexp.o `test -f 'commands/regexp.c' || echo
'./'`commands/regexp.c
In file included from commands/regexp.c:28:
../grub-core/lib/gnulib/regex.h:682:20: error: variable length array
used [-Werror,-Wvla]
_REGEX_NELTS (__nmatch)],
^~~~~~~~
../grub-core/lib/gnulib/regex.h:528:27: note: expanded from macro
'_REGEX_NELTS'
# define _REGEX_NELTS(n) n
^
1 error generated.
make[3]: *** [Makefile:41321: commands/regexp_module-regexp.o] Fehler 1
```
I tried to use latest Gnulib (not the one defined in `bootstrap.conf`),
but the error remains.
How to deal with that, if I am unsure how to fix it? Report it to the
Gnulib folks?
Kind regards,
Paul
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: clang build fails with `../grub-core/lib/gnulib/regex.h:682:20: error: variable length array used [-Werror,-Wvla]`
2022-03-25 7:12 clang build fails with `../grub-core/lib/gnulib/regex.h:682:20: error: variable length array used [-Werror,-Wvla]` Paul Menzel
@ 2022-03-25 12:24 ` Darren Kenny
0 siblings, 0 replies; 2+ messages in thread
From: Darren Kenny @ 2022-03-25 12:24 UTC (permalink / raw)
To: Paul Menzel, grub-devel
Hi Paul,
I'm seeing that same issue, and I sent an e-mail to the gnulib list
about it yesterday. I've not gotten a response to it yet though - but it
is on my radar to get fixed since it's also blocking some other work I'm
doing.
Thanks,
Darren.
On Friday, 2022-03-25 at 08:12:16 +01, Paul Menzel wrote:
> Dear GRUB folks,
>
>
> On Debian sid/unstable clang 13.0.1 fails to build GRUB due to a problem
> in Gnulib:
>
> ```
> $ git log --oneline -1 --no-decorate
> 7c316e183 term/efi/console: Do not set cursor until the first text output
> $ ./configure --with-platform=coreboot CC=clang && make
> […]
> clang -DHAVE_CONFIG_H -I. -I.. -Wall -W -DGRUB_MACHINE_COREBOOT=1
> -DGRUB_MACHINE=I386_COREBOOT -m32 -msoft-float -Xclang -msoft-float
> -Xclang -no-implicit-float -nostdinc -isystem
> /usr/lib/llvm-13/lib/clang/13.0.1/include -I../include -I../include
> -DGRUB_FILE=\"commands/regexp.c\" -I. -I. -I.. -I.. -I../include
> -I../include -I../grub-core/lib/libgcrypt-grub/src/
> -I../grub-core/lib/posix_wrap -I../grub-core/lib/gnulib
> -I../grub-core/lib/gnulib -D_FILE_OFFSET_BITS=64 -std=gnu99 -fno-common
> -Os -m32 -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 -g
> -Wredundant-decls -Wmissing-prototypes -Wmissing-declarations -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 -march=i386
> -falign-functions=1 -freg-struct-return -mno-mmx -mno-sse -mno-sse2
> -mno-sse3 -mno-3dnow -fno-dwarf2-cfi-asm -mno-stack-arg-probe
> -fno-asynchronous-unwind-tables -fno-unwind-tables -fno-ident -Qn
> -Qunused-arguments -fno-stack-protector -Werror -ffreestanding
> -fno-builtin -Wno-undef -Wno-sign-compare -Wno-unused
> -Wno-unused-parameter -Wno-redundant-decls -Wno-unreachable-code
> -Wno-conversion -MT commands/regexp_module-regexp.o -MD -MP -MF
> commands/.deps-core/regexp_module-regexp.Tpo -c -o
> commands/regexp_module-regexp.o `test -f 'commands/regexp.c' || echo
> './'`commands/regexp.c
> In file included from commands/regexp.c:28:
> ../grub-core/lib/gnulib/regex.h:682:20: error: variable length array
> used [-Werror,-Wvla]
> _REGEX_NELTS (__nmatch)],
> ^~~~~~~~
> ../grub-core/lib/gnulib/regex.h:528:27: note: expanded from macro
> '_REGEX_NELTS'
> # define _REGEX_NELTS(n) n
> ^
> 1 error generated.
> make[3]: *** [Makefile:41321: commands/regexp_module-regexp.o] Fehler 1
> ```
>
> I tried to use latest Gnulib (not the one defined in `bootstrap.conf`),
> but the error remains.
>
> How to deal with that, if I am unsure how to fix it? Report it to the
> Gnulib folks?
>
>
> Kind regards,
>
> Paul
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-03-25 12:24 UTC | newest]
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2022-03-25 7:12 clang build fails with `../grub-core/lib/gnulib/regex.h:682:20: error: variable length array used [-Werror,-Wvla]` Paul Menzel
2022-03-25 12:24 ` Darren Kenny
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