Debugging with GDB Manual (5900-1473; WDB 6.2; January 2011)

all To view and evaluate all the macro expressions in the program, you must compile
the program with +macro_debug=all. This option can cause a significant
increase in object file size.
ref To view and evaluate only the reference macros in the program, you must compile
the program with +macro_debug=ref. This is the default for -g, -g0, or -g1.
none To disable macro debugging, you must compile the program with +macro_
debug=none
The macro debugging features are supported for +objdebug and +noobjdebug
compiler options.
14.9.2 Examples for Macro Debugging
The following example illustrates the use of the macro debugging:
Sample Program:
$ cat scope.c
1
2 #include <stdio.h>
3
4 #define USED1 100
5 #define USED2 200
6 #define UNUSED1 0
7 #define UNUSED2 0
8 #define DUMMY1
9 #define DUMMY2
10
11 int
12 main ()
13 {
14
15 int val = USED1;
16
17 #undef UNUSED1
18 #undef USED2
19 #undef USED1
20 #define USED1 101
21 #define USED2 201
22
23 val = USED1 + USED2;
24
25 #undef USED1
26 #undef UNUSED2
27 #undef USED2
28 #define USED1 102
29
30 val = USED1;
31
32 return 0;
33 }
148 HP-UX Configuration-Specific Information