Summary: gcc 4.0 produces corrupted shared library if it is statically linked
with libstdc++ and etc. stuff
>g++ -v
Using built-in specs.
Target: sparc-sun-solaris2.9
Configured with: ../gcc-4.0.0/configure
--prefix=/home2/anton/opt/gcc-4.0.0-noshared --with-gnu-ld
--with-ld=/home2/anton/opt/bin/ld --with-gnu-as
--with-as=/home2/anton/opt/bin/as --disable-libgcj --enable-languages=c,c++
--disable-shared
Thread model: posix
gcc version 4.0.0
>uname -a
SunOS solaris 5.9 Generic_117171-07 sun4u sparc SUNW,Sun-Blade-100
Source code of shared library:
=== q.cpp start ===
#include <stdio.h>
extern "C" {
void foo() {
printf("sizeof(void*)=%d\n", sizeof(void*));
}
}
=== q.cpp end ===
>g++ -m64 -fPIC q.cpp -shared -o libq.so
>file libq.so
libq.so: ELF 64-bit MSB dynamic lib SPARCV9 Version 1, dynamically
linked, not stripped
>ldd -Ur libq.so
libm.so.1 => /usr/lib/64/libm.so.1
libc.so.1 => /usr/lib/64/libc.so.1
libdl.so.1 => /usr/lib/64/libdl.so.1
/usr/platform/SUNW,Sun-Blade-100/lib/sparcv9/libc_psr.so.1
unreferenced object=/usr/lib/64/libm.so.1; unused dependency of ./libq.so
unused object=/usr/lib/64/libm.so.1; member of cyclic group [1]
Everything seems to be OK.
But when we load .so with the following simple program test.cpp, it prints error
message:
=== test.cpp start ===
#include <dlfcn.h> /* defines dlopen(), etc. */
#include <stdlib.h>
#include <stdio.h>
int main() {
void* lib_handle = dlopen("/home2/anton/projects/frekenbok/libq.so",
RTLD_LAZY);
if (!lib_handle) {
fprintf(stderr, "Error during dlopen(): %s\n", dlerror());
exit(1);
}
}
=== test.cpp end ===
>g++ -m64 test.cpp
>./a.out
Error during dlopen(): ld.so.1: a.out: fatal: relocation error: R_SPARC_WDISP30:
file /home2/anton/projects/frekenbok/libq.so: symbol strcpy: value 0x6053f9f7
does not fit
There is no problem if gcc is configured with shared enabled (i.e. without
"--disable-shared" flag), and .so is dynamically linked with libstdc++.so etc.
As well everything is fine in 32 bit mode (-m32), even statically linked.
So the problem appears _only_ in 64 bit mode and _only_ when resulting shared
library is statically linked.
--
Summary: gcc 4.0 fails to statically link on Solaris SPARC 64 bit
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: critical
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: info at yourkit dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21277
