While trying yarpgen (v1 branch of github.com/intel/yarpgen ),
various test files compiled with tcc produce a wrong result.

the first failed testcode was created with:
```
yarpgen1 --std=c99  -s 5 --out-dir=./
```

For debugging, i added many "printf" in the testcode and found,
that the tcc compiled code changes the value of some variables.
The first change is variable "tf_1_var_118" from 95 to 0.


Code flow with line numbers in file func.c, function tf_1_foo():

1363: Both compiler reach the if (tf_1_struct_obj_3.member_1_1)
1366: Both compiler reach the "true" section of the if clause
1372: Both compiler are still in the "true" section

Now the split:
1376: Only the gcc compiled code continues in the "true" section

1396: the tcc compiled code jumped from line 1373 (inside the "true" section)
      to the start of the "false" section
1454: the tcc compiled code has changed the value of the variable
      "tf_1_var_118" from 95 to 0.

This results in a different checksum for the program.

The tcc compiled code changes some more values,
but "tf_1_var_118" is the first difference.

I used gcc as reference compiler, but clang produces the same result.