[email protected] said:
> Somehow the use of %fs smells like the compiler is assuming its building
> code for the host and applying some trickery.
>
> In fact, libc for rumprun-posix on the same ubuntu host contains the
> same %fs assembly snippet, but works.
>
> Maybe you can compare the cc default settings and also the output for cc
> -E for lib/libc/stdio/vnsprintf.c
The compiler flags and indeed the entire command line used to compile
vsnprintf.o are identical. However, on the ubuntu machine I see strange
warnings about redefining vsnprintf, among other things.
Not sure what is going on here. I've attached the relevant portions of the
build logs to this message.
Martin
----Debian----
--- vsnprintf.o ---
# compile libc/vsnprintf.o
/home/mato/rumpkernel/rumprun-xen/rumptools/bin/x86_64--netbsd-gcc -O2 -g
-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
-Wno-sign-compare -Wno-traditional -Wreturn-type -Wswitch -Wshadow
-Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -Wno-sign-compare
-Wold-style-definition -Wsign-compare -Wformat=2 -Wno-format-zero-length
-D__NetBSD__ -Ulinux -U__linux -U__linux__ -U__gnu_linux__
-I/home/mato/rumpkernel/rumprun-xen/rumptools/dest/usr/include -DMAXPHYS=32768
-D_LIBC -DLIBC_SCCS -DSYSLIBC_SCCS -D_REENTRANT -D_DIAGNOSTIC -DMLIBDIR=\"\"
-DHESIOD -DINET6 -DNLS
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/include
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/quad
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/string
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/arch/x86_64/string
-D__DBINTER
FACE_PRIVATE -I/home/mato/rumpkernel/rumprun-xen/rumpsrc/libexec/ld.elf_so
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/dlfcn
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/gdtoa
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/locale -DNO_FENV_H
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/arch/x86_64/gdtoa
-DWITH_RUNE -I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc
-DPOSIX_MISTAKE -DCOMPAT__RES -DUSE_POLL -DPORTMAP -DWIDE_DOUBLE -DALL_STATE
-DUSG_COMPAT -c
/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf.c -o
vsnprintf.o
--- vsnprintf_ss.o ---
# compile libc/vsnprintf_ss.o
/home/mato/rumpkernel/rumprun-xen/rumptools/bin/x86_64--netbsd-gcc -O2 -g
-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
-Wno-sign-compare -Wno-traditional -Wreturn-type -Wswitch -Wshadow
-Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -Wno-sign-compare
-Wold-style-definition -Wsign-compare -Wformat=2 -Wno-format-zero-length
-D__NetBSD__ -Ulinux -U__linux -U__linux__ -U__gnu_linux__
-I/home/mato/rumpkernel/rumprun-xen/rumptools/dest/usr/include -DMAXPHYS=32768
-D_LIBC -DLIBC_SCCS -DSYSLIBC_SCCS -D_REENTRANT -D_DIAGNOSTIC -DMLIBDIR=\"\"
-DHESIOD -DINET6 -DNLS
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/include
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/quad
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/string
-ib/libc/arch/x86_64/string -D__/lib/libc/arch/x86_64/string
-D__/lib/libc/arch/x86_64/string -D__DBINTER
FACE_PRIVATE -I/home/mato/rumpkernel/rumprun-xen/rumpsrc/libexec/ld.elf_so
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/dlfcn
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/gdtoa
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/locale -DNO_FENV_H
-I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/arch/x86_64/gdtoa
-DWITH_RUNE -I/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc
-DPOSIX_MISTAKE -DCOMPAT__RES -DUSE_POLL -DPORTMAP -DWIDE_DOUBLE -DALL_STATE
-DUSG_COMPAT -c
/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c -o
vsnprintf_ss.o
In file included from
/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/include/extern.h:28:0,
from
/home/mato/rumpkernel/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c:54:
/home/mato/rumpkernel/rumprun-xen/rumptools/dest/usr/include/ucontext.h:41:1:
warning: function declaration isn't a prototype [-Wstrict-prototypes]
void makecontext(ucontext_t *, void (*)(), int, ...);
^
----Ubuntu----
--- vsnprintf.o ---
# compile libc/vsnprintf.o
/home/mato/rumprun-xen/rumptools/bin/x86_64--netbsd-gcc -O2 -g -std=gnu99
-Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
-Wno-sign-compare -Wno-traditional -Wreturn-type -Wswitch -Wshadow
-Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -Wno-sign-compare
-Wold-style-definition -Wsign-compare -Wformat=2 -Wno-format-zero-length
-D__NetBSD__ -Ulinux -U__linux -U__linux__ -U__gnu_linux__
-I/home/mato/rumprun-xen/rumptools/dest/usr/include -DMAXPHYS=32768 -D_LIBC
-DLIBC_SCCS -DSYSLIBC_SCCS -D_REENTRANT -D_DIAGNOSTIC -DMLIBDIR=\"\" -DHESIOD
-DINET6 -DNLS -I/home/mato/rumprun-xen/rumpsrc/lib/libc/include
-I/home/mato/rumprun-xen/rumpsrc/lib/libc
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/quad
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/string
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/arch/x86_64/string
-D__DBINTERFACE_PRIVATE -I/home/mato/rumprun-xen/rumpsrc/libexec/ld.elf_so
-I/home/mato/
rumprun-xen/rumpsrc/lib/libc/dlfcn
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/gdtoa
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/locale -DNO_FENV_H
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/arch/x86_64/gdtoa -DWITH_RUNE
-I/home/mato/rumprun-xen/rumpsrc/lib/libc -DPOSIX_MISTAKE -DCOMPAT__RES
-DUSE_POLL -DPORTMAP -DWIDE_DOUBLE -DALL_STATE -DUSG_COMPAT -c
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf.c -o vsnprintf.o
--- vsnprintf_ss.o ---
# compile libc/vsnprintf_ss.o
/home/mato/rumprun-xen/rumptools/bin/x86_64--netbsd-gcc -O2 -g -std=gnu99
-Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
-Wno-sign-compare -Wno-traditional -Wreturn-type -Wswitch -Wshadow
-Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -Wno-sign-compare
-Wold-style-definition -Wsign-compare -Wformat=2 -Wno-format-zero-length
-D__NetBSD__ -Ulinux -U__linux -U__linux__ -U__gnu_linux__
-I/home/mato/rumprun-xen/rumptools/dest/usr/include -DMAXPHYS=32768 -D_LIBC
-DLIBC_SCCS -DSYSLIBC_SCCS -D_REENTRANT -D_DIAGNOSTIC -DMLIBDIR=\"\" -DHESIOD
-DINET6 -DNLS -I/home/mato/rumprun-xen/rumpsrc/lib/libc/include
-I/home/mato/rumprun-xen/rumpsrc/lib/libc
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/quad
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/string
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/../../common/lib/libc/arch/x86_64/string
-D__DBINTERFACE_PRIVATE -I/home/mato/rumprun-xen/rumpsrc/libexec/ld.elf_so
-I/home/mato/
rumprun-xen/rumpsrc/lib/libc/dlfcn
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/gdtoa
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/locale -DNO_FENV_H
-I/home/mato/rumprun-xen/rumpsrc/lib/libc/arch/x86_64/gdtoa -DWITH_RUNE
-I/home/mato/rumprun-xen/rumpsrc/lib/libc -DPOSIX_MISTAKE -DCOMPAT__RES
-DUSE_POLL -DPORTMAP -DWIDE_DOUBLE -DALL_STATE -DUSG_COMPAT -c
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c -o vsnprintf_ss.o
--- vsnprintf.o ---
In file included from
/home/mato/rumprun-xen/rumptools/dest/usr/include/stdio.h:594:0,
from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf.c:49:
/home/mato/rumprun-xen/rumptools/dest/usr/include/ssp/stdio.h:61:0: warning:
"snprintf" redefined [enabled by default]
#define snprintf(str, len, ...) \
^
In file included from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf.c:44:0:
/home/mato/rumprun-xen/rumpsrc/lib/libc/include/namespace.h:621:0: note: this
is the location of the previous definition
#define snprintf _snprintf
^
In file included from
/home/mato/rumprun-xen/rumptools/dest/usr/include/stdio.h:594:0,
from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf.c:49:
/home/mato/rumprun-xen/rumptools/dest/usr/include/ssp/stdio.h:64:0: warning:
"vsnprintf" redefined [enabled by default]
#define vsnprintf(str, len, fmt, ap) \
^
In file included from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf.c:44:0:
/home/mato/rumprun-xen/rumpsrc/lib/libc/include/namespace.h:731:0: note: this
is the location of the previous definition
#define vsnprintf _vsnprintf
^
--- vsnprintf_ss.o ---
In file included from
/home/mato/rumprun-xen/rumptools/dest/usr/include/stdio.h:594:0,
from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c:49:
/home/mato/rumprun-xen/rumptools/dest/usr/include/ssp/stdio.h:61:0: warning:
"snprintf" redefined [enabled by default]
#define snprintf(str, len, ...) \
^
In file included from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c:44:0:
/home/mato/rumprun-xen/rumpsrc/lib/libc/include/namespace.h:621:0: note: this
is the location of the previous definition
#define snprintf _snprintf
^
In file included from
/home/mato/rumprun-xen/rumptools/dest/usr/include/stdio.h:594:0,
from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c:49:
/home/mato/rumprun-xen/rumptools/dest/usr/include/ssp/stdio.h:64:0: warning:
"vsnprintf" redefined [enabled by default]
#define vsnprintf(str, len, fmt, ap) \
^
In file included from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c:44:0:
/home/mato/rumprun-xen/rumpsrc/lib/libc/include/namespace.h:731:0: note: this
is the location of the previous definition
#define vsnprintf _vsnprintf
^
In file included from
/home/mato/rumprun-xen/rumpsrc/lib/libc/include/extern.h:28:0,
from
/home/mato/rumprun-xen/rumpsrc/lib/libc/stdio/vsnprintf_ss.c:54:
/home/mato/rumprun-xen/rumptools/dest/usr/include/ucontext.h:41:1: warning:
function declaration isn't a prototype [-Wstrict-prototypes]
void makecontext(ucontext_t *, void (*)(), int, ...);
^
------------------------------------------------------------------------------
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