Possible tmp bug #8
Comments
gaborcsardi
added a commit
that referenced
this issue
Sep 27, 2022
Following lpSolveAPI.
Original error:
```
> ### Name: lp
> ### Title: Linear and Integer Programming
> ### Aliases: lp
> ### Keywords: optimize
>
> ### ** Examples
>
> #
> # Set up problem: maximize
> # x1 + 9 x2 + x3 subject to
> # x1 + 2 x2 + 3 x3 <= 9
> # 3 x1 + 2 x2 + 2 x3 <= 15
> #
> f.obj <- c(1, 9, 1)
> f.con <- matrix (c(1, 2, 3, 3, 2, 2), nrow=2, byrow=TRUE)
> f.dir <- c("<=", "<=")
> f.rhs <- c(9, 15)
> #
> # Now run.
> #
> lp ("max", f.obj, f.con, f.dir, f.rhs)
lp_presolve.c:193:34: runtime error: applying non-zero offset 16 to null pointer
#0 0x7f9ffc9213db in presolve_rebuildUndo /data/gannet/ripley/R/packages/tests-clang-SAN/lpSolve/src/lp_presolve.c:193:34
#1 0x7f9ffc988821 in postsolve /data/gannet/ripley/R/packages/tests-clang-SAN/lpSolve/src/lp_presolve.c:5620:5
#2 0x7f9ffc9fcbff in spx_solve /data/gannet/ripley/R/packages/tests-clang-SAN/lpSolve/src/lp_simplex.c:2062:9
#3 0x7f9ffc9fe260 in lin_solve /data/gannet/ripley/R/packages/tests-clang-SAN/lpSolve/src/lp_simplex.c:2154:12
#4 0x7f9ffca13511 in lpslink /data/gannet/ripley/R/packages/tests-clang-SAN/lpSolve/src/lpslink56.c:377:25
#5 0x74ef88 in do_dotCode /data/gannet/ripley/R/svn/R-devel/src/main/dotcode.c
#6 0x83f0a5 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7126:14
#7 0x829ade in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:748:8
#8 0x891fd3 in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c
#9 0x88dc7f in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1844:16
#10 0x82a518 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:871:12
#11 0x95ade6 in Rf_ReplIteration /data/gannet/ripley/R/svn/R-devel/src/main/main.c:264:2
#12 0x95e340 in R_ReplConsole /data/gannet/ripley/R/svn/R-devel/src/main/main.c:316:11
#13 0x95e149 in run_Rmainloop /data/gannet/ripley/R/svn/R-devel/src/main/main.c:1194:5
#14 0x95e482 in Rf_mainloop /data/gannet/ripley/R/svn/R-devel/src/main/main.c:1201:5
#15 0x4f30ba in main /data/gannet/ripley/R/svn/R-devel/src/main/Rmain.c:29:5
#16 0x7fa00c1cab74 in __libc_start_main (/lib64/libc.so.6+0x27b74) (BuildId: 08df60634339b221bb854d4e10b7278cafde70c4)
#17 0x43231d in _start (/data/gannet/ripley/R/R-clang-SAN/bin/exec/R+0x43231d)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior lp_presolve.c:193:34 in
Success: the objective function is 40.5
```
|
I am the maintainer, not the author, but 😆 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
When saving an lp object, I noticed that under $tmp, there's a note saying "Nobody will ever look at this" (text color is my own). Well, I looked at it and figured I should let you know it's still there. Thanks for your work!
The text was updated successfully, but these errors were encountered: