Segmentation fault on part 18

[dslu7733]

My test file demo.c are as follow.

int main()
{
    int a;
    char c;
    a = 1;
    c = a;
    return (1);
}

I run make, then excute command ./compl ./demo.c.
Output displays Segmentation fault.

I guess some bugs in in function binexpr() of file expr.c.

      // Ensure the right's type matches the left
      right = modify_type(right, left->type, 0);
      if (left == NULL)        // <-  bug
        fatal("Incompatible expression in assignment");

correct it if (right == NULL), and then the program run correctly.

[alex-xia-xia]

I aslo catched this program. I think that is a writing mistake.

[vonbrand]

The same issue shows up in 18..16, fixed (as suggested) in 27. The attached git patch (renamed as GH doesn't like .patch) applies the fix to the missing files.
0001-Fix-issue-26-in-18.26.txt