[Bug 251150] Cannot compile zfsboot: no previous prototype for function 'main' [-Werror,-Wmissing-prototypes]

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251150

            Bug ID: 251150
           Summary: Cannot compile zfsboot: no previous prototype for
                    function 'main' [-Werror,-Wmissing-prototypes]
           Product: Base System
           Version: CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: markiyan.kushnir at gmail.com

cc  -O2 -pipe -fno-common   -I/work/src.svn/stand/i386/btx/lib -nostdinc   
-I/work/obj/work/src.svn/amd64.amd64/stand/libsa32 -I/work/src.svn/stand/libsa
-D_STANDALONE -I/work/src.svn/sys -Ddouble=jagged-little-pill
-Dfloat=floaty-mcfloatface -ffunction-sections -fdata-sections
-DLOADER_GELI_SUPPORT -I/work/src.svn/stand/libsa/geli -DLOADER_DISK_SUPPORT
-m32 -ffreestanding -mno-mmx -mno-sse -mno-avx -mno-avx2 -msoft-float
-march=i386 -mno-relax -I. -Iinclude -DBOOTPROG=\"zfsboot\"  -O1  -DBOOT2 
-DLOADER_GPT_SUPPORT  -DLOADER_MBR_SUPPORT  -DLOADER_ZFS_SUPPORT 
-DLOADER_UFS_SUPPORT  -DSIOPRT=0x3f8  -DSIOFMT=0x3  -DSIOSPD=9600 
-I/work/src.svn/stand/common  -I/work/src.svn/stand/i386/common 
-I/work/src.svn/stand/i386/libi386  -I/work/src.svn/stand/libsa/zfs 
-I/work/src.svn/sys/crypto/skein  -I/work/src.svn/sys/cddl/boot/zfs 
-I/work/src.svn/sys/contrib/openzfs/include 
-I/work/src.svn/sys/contrib/openzfs/include/os/freebsd/spl 
-I/work/src.svn/sys/contrib/openzfs/include/os/freebsd/zfs 
-I/work/src.svn/sys/cddl/contrib/opensolaris/common/lz4 
-I/work/src.svn/stand/i386/boot2  -Wall -Waggregate-return -Wbad-function-cast
-Wno-cast-align  -Wmissing-declarations -Wmissing-prototypes -Wnested-externs 
-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings -g -MD 
-MF.depend.zfsboot.o -MTzfsboot.o -std=gnu99 -Wno-format-zero-length
-nobuiltininc -idirafter /usr/lib/clang/9.0.1/include -Wsystem-headers -Werror
-Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int
-Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value
-Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
-Wno-unused-local-typedef -Wno-address-of-packed-member -Wno-switch
-Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses  -Oz
-Qunused-arguments    -c /work/src.svn/stand/i386/zfsboot/zfsboot.c -o
zfsboot.o
/work/src.svn/stand/i386/zfsboot/zfsboot.c:165:1: error: no previous prototype
for function 'main' [-Werror,-Wmissing-prototypes]
main(void)
^
/work/src.svn/stand/i386/zfsboot/zfsboot.c:164:1: note: declare 'static' if the
function is not intended to be used outside of this translation unit
int
^
static
1 error generated.
*** Error code 1

Stop.
make: stopped in /work/src.svn/stand/i386/zfsboot


I'd suggest to add the main() declaration much like it's in gptboot.

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