Array indexing inside a function

[asodja]

In the attachment are three variations of the same function (whithout change of functionality) gives three different errors.

1. When identifier 'end' is used as index (in example SimpsonTest_1.mo), the following error is printed:

   [SimCodeC.tpl:4220:14-4220:14:writable] Error: Template error: Unknown expression: end
   

2. When first the value of {{size(vals,1)}} is assigned to a variable (in example SimpsonTest_2.mo) and then the variable is used for indexing is the error:

   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Illegal subscript [3:2:nvals - 1] for dimensions : in component <NO COMPONENT>
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Variable vals[3:2:nvals - 1] not found in scope SimpsonTest.simpson
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Illegal subscript [3:2:nvals - 1] for dimensions : in component <NO COMPONENT>
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Variable vals[3:2:nvals - 1] not found in scope SimpsonTest.simpson
   Error: Error occured while flattening model SimpsonTest
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Illegal subscript [3:2:nvals - 1] for dimensions : in component <NO COMPONENT>
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Variable vals[3:2:nvals - 1] not found in scope SimpsonTest.simpson
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Illegal subscript [3:2:nvals - 1] for dimensions : in component <NO COMPONENT>
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Variable vals[3:2:nvals - 1] not found in scope SimpsonTest.simpson
   Error: Tried to use function .SimpsonTest.simpson, but it was not instantiated.
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Illegal subscript [3:2:nvals - 1] for dimensions : in component <NO COMPONENT>
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Variable vals[3:2:nvals - 1] not found in scope SimpsonTest.simpson
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Illegal subscript [3:2:nvals - 1] for dimensions : in component <NO COMPONENT>
   [SimpsonTest_2.mo:13:7-14:54:writable] Error: Variable vals[3:2:nvals - 1] not found in scope SimpsonTest.simpson
   Error: Tried to use function .SimpsonTest.simpson, but it was not instantiated.
   

3. When a call to {{size(vals,1)}} is insert directly in array subscripts (example SimpsonTest_3.mo), the error is:

   Error: Error building simulator. Buildlog: gcc -I"/home/anton/openmodelica/trunk/build/include/omc"  -O0 -falign-functions -march=native -mfpmath=sse  -c -o SimpsonTest_simpson.o SimpsonTest_simpson.c
   SimpsonTest_simpson.c: In function ‘_SimpsonTest_simpson’:
   SimpsonTest_simpson.c:23: error: ‘sum_rettype’ undeclared (first use in this function)
   SimpsonTest_simpson.c:23: error: (Each undeclared identifier is reported only once
   SimpsonTest_simpson.c:23: error: for each function it appears in.)
   SimpsonTest_simpson.c:23: error: expected ‘;’ before ‘tmp7’
   SimpsonTest_simpson.c:27: error: expected ‘;’ before ‘tmp11’
   SimpsonTest_simpson.c:30: error: expected ‘;’ before ‘tmp14’
   SimpsonTest_simpson.c:41: error: expected expression before ‘,’ token
   SimpsonTest_simpson.c:42: error: expected expression before ‘)’ token
   SimpsonTest_simpson.c:44: error: ‘tmp7’ undeclared (first use in this function)
   SimpsonTest_simpson.c:45: error: expected expression before ‘,’ token
   SimpsonTest_simpson.c:46: error: expected expression before ‘)’ token
   SimpsonTest_simpson.c:48: error: ‘tmp11’ undeclared (first use in this function)
   SimpsonTest_simpson.c:56: error: ‘tmp14’ undeclared (first use in this function)
   make: *** [SimpsonTest_simpson] Error 1
   

[sjoelund.se]

The first test should be fixed by removing DAE.END (replace with size(cr,dim)). This works for more cases, and can be constant evaluated for as many cases as DAE.END could handle before...

[sjoelund.se]

Some fixes in r9406

[sjoelund.se]

Number 2 is not a bug at all. It comes from nvars being defined and nvals being used.

[sjoelund.se]

Code generation fixed in r9442.