I have the following program:
main.cpp
--------------------------------------------------
struct Foo
{
void foobar() {}
};
typedef void (*plain_foobar_t)(Foo*);
int main()
{
asm("push %0;"
:
: "i"((plain_foobar_t)&Foo::foobar));
}
--------------------------------------------------
If I compile this with
g++ -Wno-pmf-conversions main.cpp
I get the following:
main.cpp: In function 'void test()':
main.cpp:12: warning: asm operand 0 probably doesn't match constraints
main.cpp:12: error: impossible constraint in 'asm'
If I compile it using -ftree-ter, like this:
g++ -Wno-pmf-conversions -ftree-ter main.cpp
I do not get any error.
Some info about my system:
$ gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--enable-multiarch --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc
--enable-targets=all --disable-werror --with-arch-32=i486 --with-tune=generic
--enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu
--target=i486-linux-gnu
Thread model: posix
gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
$ uname -a
Linux squatpc 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 06:07:29 UTC 2010
i686 GNU/Linux
I suspect this is a bug, but since I'm not completely sure, I posted this
question on the mailing list
(http://gcc.gnu.org/ml/gcc-help/2010-08/msg00126.html) but I didn't get any
answers.
--
Summary: Compile error when not using -ftree-ter
Product: gcc
Version: 4.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jobnoorman at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45303
