Called function behind caller function in cpp file

[Robert.Wotzlaw]

Dear Mr. Peter Aronsson,

something new. Bug in cpp source file, a function called a function that is
behind the caller function.

The platform and compiler

---

Debian Sarge Linux Knoppix Quantian with GNU GCC 3.3 and OpenModelica 1.4.1

The BugDebCoefficient.mo OpenModelica source code file:

---

class BugDebCoefficient

Real L;
Real Psi;
Real U;
Real i;

equation

L = (if i >= 0.0 then 2*i else 0.0);
Psi = L*i;
U = 1.0;
U = der(Psi);

end BugDebCoefficient;

In the OMShell

---

loadFile("BugDebCoefficient.mo")

true

instantiateModel(BugDebCoefficient)

"fclass BugDebCoefficient
Real L;
Real Psi;
Real U;
Real i;
equation

L = (if i >= 0.0 then 2*i else 0.0);
Psi = L*i;
U = 1.0;
U = der(Psi);

end BugDebCoefficient;
"

simulate(BugDebCoefficient,startTime=0, stopTime=12)

record

resultFile = "Simulation failed.

"
end record

The error.log file

---

01:BugDebCoefficient.cpp: In function `int functionDAE_output()':
02:BugDebCoefficient.cpp:441: error: `residualFunc2' undeclared (first use this
03: function)
04:BugDebCoefficient.cpp:441: error: (Each undeclared identifier is reported only
05: once for each function it appears in.)
06:BugDebCoefficient.cpp: In function `void residualFunc2(int *, double*,
double*, int*)
07:':
08:BugDebCoefficient.cpp:459: error: `void residualFunc2(int *, double*,
double*, int*)'
09: used prior to declaration
10:make: * [BugDebCoefficient] Error 1

BugDebCoefficient.cpp file generated from omc (excerpts)

---

432:int functionDAE_output()
433:{
434: state mem_state;

437: mem_state = get_memory_state();
438: start_nonlinear_system(2);
439: nls_x[1] = $i;
400: nls_x[0] = $L;

441: hybrd_(residualFunc2,&n, nls_x, nls_fvec,&xtol,&maxfev,&ml,&mu,&epsfcn,
442: nls_diag,&mode,&factor,&nprint,&info,&nfer,nls_fjac,&ldfjac,
443: nls_r,&lx,nls_qtf,nls_wa1,nls_wa2,nls_wa3,nls_wa4);

457:}
458:void void residualFunc2(int *n, double* xloc, double* res, int* flag)
459:{
460: modelica_boolean tmp0;

472:}

The workaround

---

I moved the function residualFunc() in front of the function functionDAE_output().

432:void void residualFunc2(int *n, double* xloc, double* res, int* flag)
433:{
434: modelica_boolean tmp0;

446:}

448:int functionDAE_output()
449:{
450: state mem_state;

473:}

Now I run the makefile BugDepCoefficient.makefile:

$: make -f BugDepCoefficient.makefile 2>&1 | tee make_all.log

The source file BugDepCoefficient.cpp was compiled without an error.
In the next step I run the BugDepCoefficient.exe file:

$: ./BugDepCoefficient.exe

The output is the BugDepCoefficient_res.plt file. I ploted the numbers with my
runptplot shell script:

$: ./runptplot BugDepCoefficient_res.plt

The result I saw, was corret. The equation Psi = L*i is linear time depend with
a slope of one. So differential equation U = der(Psi) is valid.

For informational purpose only, the source of the runptplot script:

01:#!/bin/sh
02:echo Running 'java ptolemy.plot $*' with /home/knoppix/DebianPackageBuild/
omc/omc-1.4.1-resource/ptplot.jar appended to the CLASSPATH variable
03:export CLASSPATH
04:export CLASSPATH=$CLASSPATH:/home/knoppix/DebianPackageBuild/omc/
omc-1.4.1-resource/ptplot.jar
05:/usr/lib/j2se/1.4/jre/bin/java ptolemy.plot.plotml.EditablePlotMLApplication $*

regards
Robert Wotzlaw

[Peter Aronsson]

This bug might be fixed, which version did you use?
/Peter

[Robert.Wotzlaw]

(In reply to comment #1)

This bug might be fixed, which version did you use?
/Peter

I used the OpenModelica 1.4.1 Source Release for people with SVN problems.
It is perhaps SVN Vers. 2431.

regards
Robert Wotzlaw

[Adrian Pop]

fixed in 1.4.x
​http://www.ida.liu.se/labs/pelab/modelica/OpenModelica/releases/1.4.2/src/