[Bug tree-optimization/50622] [4.7 Regression] ICE: verify_gimple failed for std::complex

[vincenzo.innocente at cern dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50622

vincenzo Innocente <vincenzo.innocente at cern dot ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |blocker

--- Comment #4 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 
2011-10-09 08:40:07 UTC ---
reduced to this (no std)

typedef __complex__ double Value;
struct LorentzVector
{
  LorentzVector & operator+=(const LorentzVector & a) {
    theX += a.theX;
    theY += a.theY;
    theZ += a.theZ;
    theT += a.theT;
    return *this;
  }

  Value theX;
  Value theY;
  Value theZ;
  Value theT;
};

inline LorentzVector
operator+(LorentzVector a, const LorentzVector & b) {
  return a += b;
}

Value ex, et;
LorentzVector sum() {
  LorentzVector v1; v1.theX =ex; v1.theY =ex+et; v1.theZ =ex-et;   v1.theT =et;
  return v1+v1;
}

c++ -O2 -c ice47c.cc
ice47c.cc: In function ‘LorentzVector sum()’:
ice47c.cc:24:15: error: invalid rhs for gimple memory store
a$theX

v1$theX

# .MEM_53 = VDEF <.MEM_13>
a$theX = v1$theX;

ice47c.cc:24:15: error: invalid rhs for gimple memory store
a$theY

v1$theY

# .MEM_54 = VDEF <.MEM_53>
a$theY = v1$theY;

ice47c.cc:24:15: error: invalid rhs for gimple memory store
a$theZ

v1$theZ

# .MEM_55 = VDEF <.MEM_54>
a$theZ = v1$theZ;

ice47c.cc:24:15: error: invalid rhs for gimple memory store
a$theT

v1$theT

# .MEM_56 = VDEF <.MEM_55>
a$theT = v1$theT;

ice47c.cc:24:15: internal compiler error: verify_gimple failed
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See <http://gcc.gnu.org/bugs.html> for instructions.