APP FAILURE spec2k ammp on xp64 compiled with mingw g77 run under DrMem fails

_From [derek.br...@gmail.com](https://code.google.com/u/117968039472581148324/) on December 10, 2010 17:45:25_

PR 615015

natively it succeeds.
compiled w/ cl it succeeds natively and under DrMem.

% cat ../benchmarks/spec2000/fp/ammp/release-xp64-test/ammp.out.mis
0023: 1184.181101 bond energy
1.#QNAN0 bond energy
^
0024: 2142.294444 angle energy
66.916289 angle energy
^
0025: 58.175584 hybrid energy
1.#QNAN0 hybrid energy
^
0026: 528.275613 torsion energy
1.#QNAN0 torsion energy
^
0027: -15510.199509 non-bonded energy
1.#QNAN0 non-bonded energy
^
0028: -11597.272767 total potential energy
1.#QNAN0 total potential energy
^
0029: 8562.611532 total kinetic energy
1.#QNAN0 total kinetic energy
^
0030: -3034.661236 total energy
1.#QNAN0 total energy
^
0031: 20159.884299 total action
1.#QNAN0 total action
^
0035: RMSD 0.000003 Maximum Deviation 0.000015
RMSD 1.#QNAN0 Maximum Deviation 0.249758
^
0036: RMSD after superposition 0.000003
RMSD after superposition 1.#QNAN0

_Original issue: http://code.google.com/p/drmemory/issues/detail?id=90_