apogee-software apogee compilers c & c++ & fortran 77 & fortran 90 User Manual

Page 172 Apogee User’s Manual

For example, suppose you have five routines:

,

,

,

, and

.  When all five are

processed with VAST, the program produces incorrect results or dies.  Try running
VAST again, but only on routines

 and

.  If they succeed, then the problem is in

,

,

or

.  If they fail, try with just routine

, and so on.  By breaking the list of suspects into

approximate halves for each test, you can identify fairly quickly which routine or
routines cause the failure.  Leave the problematic routines out of future VAST runs.

5) If you have link errors, ensure that the link step loaded all the libraries needed for all

parts of the program.  Be sure to use the appropriate

 option at link-time as

well as compile time, as this will identify which libraries are needed.

A link failure may also occur because VAST failed while processing a file, and the
routines that came after the point of failure in that file were not copied to the compile
file.  Determine the reason that VAST failed, and try relinking.

6) If the compiler issues a syntax error on a transformed program, compare the source

code with the transformed code.  VAST detects and flags some runtime errors,
especially in I/O statements, at compilation time.