Re: Problem installing octave-forge packages

[John W. Eaton]

On 13-Apr-2007, John Swensen wrote:

| John Swensen wrote:
| > John W. Eaton wrote:
| >> On  5-Apr-2007, John Swensen wrote:
| >>
| >> | I recently installed the most recent CVS and now I can't get 
| >> packages to | install.
| >>
| >> What is recently?
| >>
| >> | I get a segmentation fault every time.  I dug around for a
| >> I can't duplicate this problem.  Do you have multiple copies of Octave
| >> installed that might be trying to use the same libraries?
| >>
| >> jwe
| >>
| >>   
| > I just tried again with the latest CVS as of 4/10/2007 at about 6PM.  
| > I am still having the same problem.
| > I always install each of my builds to a different directory in 
| > /sw/opt, but just to make sure they weren't conflicting, I deleted all 
| > of them before starting a new build.  I didn't have a lot of time last 
| > night to investigate more, but it is definitely still happening and 
| > still occurs in the save_vars() function.  I will try to find time to 
| > investigate more later today.
| >
| > John Swensen
| >
| I debugged some more via GDB and narrowed down the problem even further.
| All of these line numbers are for code from CVS as of April 13, 2007 at 
| ~8PM.
| 
| In load-save.cc at line 1733, in the DEFCMD(save), there is the 
| following function call
|     save_vars (argv, i, argc, file, format, save_as_floats, 
| write_header_info);
| I checked each of these variables in GDB by backing up the call stack.  
| Here, i=1.  However, when I go one more step down the call stack, inside 
| the save_vars function, the function parameter (argv_idx) that 
| corresponds to the input variable 'i' is -1073753728. 
| 
| I am not a GDB expert, but it seems strange that all of the variables 
| before and after this function call have the same values, except 
| i/argv_idx.  Any suggestions on how to proceed?

I have no clue how that can happen.  What compiler/version are you
using?  Have you tried turning off all compiler optimization for
load-save.cc?

jwe