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Re: CVS Build problem (what.m missing?)
From: |
John W. Eaton |
Subject: |
Re: CVS Build problem (what.m missing?) |
Date: |
Wed, 31 Oct 2007 21:26:27 -0400 |
On 31-Oct-2007, John Swensen wrote:
| OK...this may be one of the strangest result I have ever seen. In the
| conftest.f file generated for the BLAS calling convention test, there
| are the following lines:
| 10 continue
| retval = zdotu (n, zx, incx, zy, incy)
| Now, since I couldn't seem to get meaningful information from GDB, I
| decided to use the time tested debug practice of littering the file with
| print statements to see how far along it was getting. After messing
| around a little, I discovered that if I put a print statement between
| the two lines mentioned above, namely:
| 10 continue
| print *, ''
| retval = zdotu (n, zx, incx, zy, incy)
| that the illegal instruction error went away and it printed out:
| <empty line>
| succeeded
|
| I have never really programmed in fortran, but this seems like some sort
| of compiler bug.
Or just that you are seeing unpredictible results because the call to
zdotu is compiled using one convention for returning complex values
from a function and the library that provides zdotu is compiled using
another convention? If the code is writing over the stack in some
way, then I think the fact that the behavior changes when you insert
print statements is not too surprising.
What is the value of retval after the call? Is it really correct?
jwe
- Re: CVS Build problem (what.m missing?), (continued)
- Re: CVS Build problem (what.m missing?), Fredrik Lingvall, 2007/10/26
- Re: CVS Build problem (what.m missing?), John W. Eaton, 2007/10/26
- Re: CVS Build problem (what.m missing?), Fredrik Lingvall, 2007/10/31
- Re: CVS Build problem (what.m missing?), John W. Eaton, 2007/10/31
- Re: CVS Build problem (what.m missing?), Fredrik Lingvall, 2007/10/31
- Re: CVS Build problem (what.m missing?), John Swensen, 2007/10/31
- Re: CVS Build problem (what.m missing?), John W. Eaton, 2007/10/31
- Re: CVS Build problem (what.m missing?), Fredrik Lingvall, 2007/10/31
- Re: CVS Build problem (what.m missing?), John W. Eaton, 2007/10/31
- Re: CVS Build problem (what.m missing?), John Swensen, 2007/10/31
- Re: CVS Build problem (what.m missing?),
John W. Eaton <=
- Re: CVS Build problem (what.m missing?), John Swensen, 2007/10/31
- Re: CVS Build problem (what.m missing?), John W. Eaton, 2007/10/31
- Re: CVS Build problem (what.m missing?), John W. Eaton, 2007/10/25