http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46971
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2010-12-15 21:45:06 UTC --- Confirmed (on x86_64-apple-darwin10.5.0 the compilation hangs). The test passes if I remove four characters to both Molecular_Abundances_Structure and molecularAbundancesStructure.