http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57546
Bug ID: 57546
Summary: templated gnu multiversion function pointer returns
wrong value
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mib.bugzilla at gmail dot com
/rdrive/ref/gcc/bin/g++48 fum.cpp -std=c++0x
-bash-4.1$ ./a.out
FAILED i:0 j:0x80499c6
-bash-4.1$ cat fum.cpp
template <typename T>
class Foo
{
public:
/* Default version of foo. */
__attribute__ ((target("default")))
T foo () { return 0; }
/* corei7 version of foo. */
__attribute__ ((target("arch=corei7")))
T foo () { return 0; }
T (Foo::*p)() = &Foo::foo; // pointer to member
};
#include <stdio.h>
int main ()
{
Foo<int> f;
int i = f.foo();
int j = (f.*(f.p))(); // pointer to member call
if (i==j && j==0) {
printf("PASSED\n");
return 0;
} else {
printf("FAILED i:%d j:0x%x\n", i, j);
return -1;
}
}
-bash-4.1$ /rdrive/ref/gcc/bin/g++48 -v
Using built-in specs.
COLLECT_GCC=/rdrive/ref/gcc/4.8.1/rhel60/x86/bin/g++
COLLECT_LTO_WRAPPER=/site/spt/rdrive/ref/gcc/4.8.1/rhel60/x86/bin/../libexec/gcc/i686-pc-linux-gnu/4.8.1/lto-wrapper
Target: i686-pc-linux-gnu
Configured with:
/rusers/sys_cron/grab_gcc/downloads_rel/4.8.1/gcc-4.8.1/configure
--prefix=/rdrive/ref/gcc/4.8.1/rhel60/x86 --enable-languages=c,c++,objc,fortran
--disable-multilib --target=i686-pc-linux-gnu --disable-bootstrap
--enable-decimal-float
--with-gmp=/rusers/sys_cron/grab_gcc/downloads_rel/lib/x86
--with-mpfr=/rusers/sys_cron/grab_gcc/downloads_rel/lib/x86
--with-mpc=/rusers/sys_cron/grab_gcc/downloads_rel/lib/x86
Thread model: posix
gcc version 4.8.1 (GCC)
