Re: How to return to top level and release memory

[John W. Eaton]

On  1-Sep-2003, address@hidden <address@hidden> wrote:

| The following is a syntax error if OCTAVE_QUIT is a bare block:
| 
|       if (condition) OCTAVE_QUIT;
|       else break;

Also, even if you remember to omit the semicolon after OCTAVE_QUIT,
the else will end up pairing with the if statement in the expansion of
the OCTAVE_QUIT macro instead of the "if (condition)" in the above
code snippet.  Similarly, things like

  #define FOO \
     statement_one (); \
     statement_two ()

will cause trouble in the same context.  Unless you have a really good
reason to do otherwise, it's usually best to use a 

  do { ... } while (0)

block around multi-line macros.

jwe