Zero-length arrays size(arr, 2) crashes run-time

[Martin Sjölund]

Example that triggers error with zero-length arrays: ModelicaTest.Tables.CombiTable2D.Test15

The stack is:

#0  0x00007ffff5effbb9 in __GI_raise (sig=sig@entry=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007ffff5f02fc8 in __GI_abort () at abort.c:89
#2  0x00007ffff5ef8a76 in __assert_fail_base (
    fmt=0x7ffff604a370 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", 
    assertion=assertion@entry=0x407c18 "(i > 0) && (i <= a.ndims)", 
    file=file@entry=0x407c32 "/usr/include/omc/c/util/base_array.h", 
    line=line@entry=75, 
    function=function@entry=0x407c57 "int size_of_dimension_base_array(const base_array_t, int)") at assert.c:92
#3  0x00007ffff5ef8b22 in __GI___assert_fail (
    assertion=0x407c18 "(i > 0) && (i <= a.ndims)", 
    file=0x407c32 "/usr/include/omc/c/util/base_array.h", line=75, 
    function=0x407c57 "int size_of_dimension_base_array(const base_array_t, int)") at assert.c:101
#4  0x0000000000405a93 in size_of_dimension_base_array (a=..., i=2)
    at /usr/include/omc/c/util/base_array.h:75
#5  0x00000000004059df in omc_Modelica_Blocks_Types_ExternalCombiTable2D_constructor (threadData=0x7fffffffddb0, _tableName=0x407d19 "akima2D", 
    _fileName=0x407d21 "/usr/lib/omlibrary/Modelica 3.2.1/Resources/Data/Tables/test_v4.mat", _table=..., _smoothness=3)
    at ModelicaTest.Tables.CombiTable2D.Test15_functions.c:40
#6  0x0000000000405d6e in ModelicaTest_Tables_CombiTable2D_Test15_callExternalObjectConstructors (data=0x7fffffffde60)
    at ModelicaTest.Tables.CombiTable2D.Test15_01exo.c:49
#7  0x00007ffff7865b61 in initializeModel ()
   from /usr/lib/omc/libSimulationRuntimeC.so
#8  0x00007ffff78669a4 in solver_main ()
   from /usr/lib/omc/libSimulationRuntimeC.so
#9  0x00007ffff78998ba in callSolver ()
   from /usr/lib/omc/libSimulationRuntimeC.so
#10 0x00007ffff789826c in startNonInteractiveSimulation ()
   from /usr/lib/omc/libSimulationRuntimeC.so
#11 0x00007ffff789ae59 in _main_SimulationRuntime ()
   from /usr/lib/omc/libSimulationRuntimeC.so
#12 0x000000000040557d in main ()

Code is:

  simple_alloc_1d_base_array(&tmp1022, 0, NULL);
  $PtableID = omc_Modelica_Blocks_Types_ExternalCombiTable2D_constructor(threadData, "akima2D", "/usr/lib/omlibrary/Modelica 3.2.1/Resources/Data/Tables/test_v4.mat", tmp1022, 3);

Followed by:

size_of_dimension_base_array(_table, (modelica_integer) 2)

[Per Östlund]

The model now works correctly in all the versions of ModelicaTest that we cover.