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  • #2071

Passing multi-dimensional arrays via reference fails

ID0001093: This issue was created automatically from Mantis Issue 1093. Further discussion may take place here.


Id Project Category View Due Date Updated
ID0001093 Frama-C Plug-in > jessie public 2012-02-13 2012-02-14
Reporter flecsim Assigned To cmarche Resolution open
Priority normal Severity crash Reproducibility always
Platform - OS - OS Version -
Product Version Frama-C Nitrogen-20111001 Target Version - Fixed in Version -

Description :

Starting from the simple function

#define MAX_SIZE_X 10 typedef int AnArray[MAX_SIZE_X];

void FillArray(AnArray *paTarget, int Value) { int x = 0;

for (x = 0; x < MAX_SIZE_X; x++)
{
    (*paTarget)[x] = Value;
}

}

the code above is accepted by Jessie and can be verified (annotations removed for brevity here), but as AnArray is extended to two or more dimensions (typedef int AnArray[MAX_SIZE_X][MAX_SIZE_Y]...) - and the filling loops adapted to match - jessie crashes on loading the source file.

Additional Information :

Tested with Frama-C/Nitrogen, why-2.30 and why3-0.71 compiled in cygwin. Loading the code samples in "regular" Frama-C GUI or using WP plug-in does not cause a crash. I actually encountered this when analyzing the tree-dimensional case (parallelized matrix operations); this is the smallest form i found which shows the problem. More variants can be created, e.g. by moving one array dimension from the typedef into the actual argument (AnArray *paTarget[MAX_SIZE_X], int Value). Attached file contains four C sources to demonstrate the problem (to be split at the comment boxes), accompanied by their stacktraces.

Attachments

  • SamplePrograms.txt
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