[Lapack] a possible but in ?tgsen

[Daniel Waggoner]

Dear Sirs:

I am using LAPACK 3.2.  I have found that the routine dtgsen() 
occasionally crashes.  Upon further investigation, on line 704 of 
dtgsen.f, it appears that the matrix Q is referenced even if WANTQ is 
false.  I suspect that there should be an if statement and that Q should 
only be changed only if WANTQ is true.

Hope you find this of use and, as you know, LAPACK 3.2 is a great 
collection of programs.

Daniel Waggoner