[Clp] clp/cbc bomb on 10teams on OS X 10.6.7 with gcc 4.2.1

[Sven de Vries]

Hi,

just noticed that current trunk clp (Coin LP version trunk, build Apr 11 
2011) bombs on 10teams [actually noticed this in cbc -miplib, but clp does 
the same]


./bin/clp
Coin LP version trunk, build Apr 11 2011
Clp takes input from arguments ( - switches to stdin)
Enter ? for list of commands or help
Clp:log 63
logLevel was changed from 1 to 63
Clp:import 10teams
At line 15 NAME          10TEAMS
At line 16 ROWS
At line 248 COLUMNS
At line 8351 RHS
At line 8467 BOUNDS
At line 10493 ENDATA
Problem 10TEAMS has 230 rows, 2025 columns and 12150 elements
Model was imported from ./10teams in 0.011676 seconds
Clp:solve
20 rows dropped after presolve pass 1
20 rows dropped after presolve pass 2
Presolve 210 (-20) rows, 1600 (-425) columns and 9600 (-2550) elements
Presolve took 0.01 seconds (total 0.01)
Bounds were tightened 0 times
Initial range of elements is 1 to 1
Not bothering to scale as good enough
Absolute values of scaled rhs range from 1 to 2, minimum gap 1e+100
Absolute values of scaled objective range from 3 to 86
Absolute values of scaled bounds range from 1 to 1, minimum gap 1
         length of U 0, length of L 0
Primal error 0, dual error 0
Perturbing problem by 0.001 % of 86 - largest nonzero change 0.00024935072 (% 0.0037644719) - largest zero change 0
Primal error 0, dual error 0
0  Obj 20 Primal inf 119.99999 (120)
0  Obj 20 Primal inf 119.99999 (120)
Pivot row 102
dirOut 1, dirIn 1, theta 11.000135, out 1, dj 11.000135, alpha -1
1 31.000135 In: C13 Out: R102 dj ratio 1 distance 11.000135
Pivot row 179
Segmentation fault

this version was build without me setting any -O or -g...


if I build with -g, I get: 
[~/coin-Cbc/g] % bin/clp
Coin LP version trunk, build Apr 11 2011
Clp takes input from arguments ( - switches to stdin)
Enter ? for list of commands or help
Clp:log 63
logLevel was changed from 1 to 63
Clp:import 10teams
At line 15 NAME          10TEAMS
At line 16 ROWS
At line 248 COLUMNS
At line 8351 RHS
At line 8467 BOUNDS
At line 10493 ENDATA
Problem 10TEAMS has 230 rows, 2025 columns and 12150 elements
Model was imported from ./10teams in 0.019515 seconds
Clp:solve
20 rows dropped after presolve pass 1
20 rows dropped after presolve pass 2
Presolve 210 (-20) rows, 1600 (-425) columns and 9600 (-2550) elements
Presolve took 0.02 seconds (total 0.02)
Bounds were tightened 0 times
Initial range of elements is 1 to 1
Not bothering to scale as good enough
Absolute values of scaled rhs range from 1 to 2, minimum gap 1e+100
Absolute values of scaled objective range from 3 to 86
Absolute values of scaled bounds range from 1 to 1, minimum gap 1
         length of U 0, length of L 0
Primal error 0, dual error 0
Perturbing problem by 0.001 % of 86 - largest nonzero change 0.00024935072 
(% 0.0037644719) - largest zero change 0
Primal error 0, dual error 0
0  Obj 20 Primal inf 119.99999 (120)
0  Obj 20 Primal inf 119.99999 (120)
Pivot row 102
dirOut 1, dirIn 1, theta 11.000135, out 1, dj 11.000135, alpha -1
1 31.000135 In: C13 Out: R102 dj ratio 1 distance 11.000135
Pivot row 179
dirOut 1, dirIn 1, theta 4.0001182, out 1, dj 4.0001182, alpha -1
2 35.000254 In: C231 Out: R179 dj ratio 1 distance 4.0001182
Pivot row 144
dirOut 1, dirIn 1, theta 9.0001461, out 1, dj 9.0001461, alpha -1
3 44.0004 In: C1201 Out: R144 dj ratio 1 distance 9.0001461
Pivot row 174

and it finishes without error.

... about 6 weeks ago it was still working fine.

did anybody observe this too or knows what's wrong?

best
sven

ps: similar with gcc 452...