[Bug c/47538] [4.6 Regression] GNU Scientific Library miscompiled by gcc 4.6

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47538

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-30 19:24:16 
UTC ---
Revision 168440 also miscompiled the test:

make[4]: Entering directory `/export/gnu/import/rrs/pr47538/bld/linalg'
  3[0]: 1.13399061720677903e-312                      1.5
  3[1]:    2.50000000000000044                     -0.5   
FAIL:   solve_TDN_cyc dim=2 A [233839]                 
  5[0]: 1.13399061436096091e-312    -0.227272727272727265
  5[1]:   -15.2579617834394945    -0.136363636363636354
  5[2]:   -29.8280254777070013      1.31818181818181812
  5[3]:  -0.216560509554140079    -0.409090909090909116
  5[4]:    1.73885350318471321      1.95454545454545459
FAIL:   solve_TDN_cyc dim=5 [233840]    
FAIL: Tridiagonal nonsymmetric cyclic solve [233841]
FAIL: test