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From: "hstong at ca dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/51854] New: ICE in mangle.c with literal of complex floating type
Date: Fri, 13 Jan 2012 22:25:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D51854

             Bug #: 51854
           Summary: ICE in mangle.c with literal of complex floating type
    Classification: Unclassified
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hstong@ca.ibm.com
              Host: powerpc64-unknown-linux-gnu
            Target: powerpc64-unknown-linux-gnu


ICE with imaginary component in mangled expression.

## Small self-contained source (cmplxfMangle.cpp):
template <unsigned N> struct A;

template <typename U, typename V>
char foo(U, V);

template <typename U>
void bar(A<sizeof(foo(U(), 1.0fj))> *);

int main() {
   bar<int>(0);
}


## Compiler invocation:
g++-4.6.0 cmplxfMangle.cpp -c


## Compiler output:
cmplxfMangle.cpp: In instantiation of =C3=A2void bar(A<sizeof (char foo(U(),
(__complex__ float){0.0f, 1.0e+0f}))>*) [with U =3D int]=C3=A2:
cmplxfMangle.cpp:10:15:   instantiated from here
cmplxfMangle.cpp:7:6: internal compiler error: in write_template_arg_litera=
l,
at cp/mangle.c:2772
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


## g++ -v output:
Using built-in specs.
COLLECT_GCC=3Dg++-4.6.0
COLLECT_LTO_WRAPPER=3D/data/gcc/libexec/gcc/powerpc64-unknown-linux-gnu/4.6=
.0/lto-wrapper
Target: powerpc64-unknown-linux-gnu
Configured with: ./configure --prefix=3D/data/gcc --program-suffix=3D-4.6.0
--disable-libssp --disable-libgcj --enable-version-specific-runtime-libs
--with-cpu=3Ddefault32 --enable-secureplt --with-long-double-128 --enable-s=
hared
--enable-__cxa_atexit --enable-threads=3Dposix --enable-languages=3Dc,c++,f=
ortran
--with-gmp=3D/usr/local
Thread model: posix
gcc version 4.6.0 (GCC)