SSA assertion 'functionRefExpression != NULL' failed for C++ code (but not C code)

[afsanerahbar]

Hello,

I am interested to use the extract MPI skeleton project. This project relies on the Static Single Assignment. I noticed that the SSA fails on a simple C++ program such as the program shown below with the message "Assertion `functionRefExpression != NULL' failed". However, if you change the extension to '.C' then it runs normally.

#include
#include <mpi.h>
int main(){
return 0;
}

I would appreciate it if you could help me debug and resolve this issue.

Thanks