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comparison gcc/testsuite/gcc.dg/cpp/trad/mi6.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* Another test case for over-eager multiple include optimization,
2 where the leading "#if !defined" expression is obtained partially,
3 or wholly, from macros. Neil Booth, 30 Sep 2001. */
4
5 /* { dg-do compile } */
6 /* { dg-options "" } */
7
8 extern void abort (void);
9
10 /* Each include file should not be subject to MI optimisation, since
11 macro definitions can change. Each header increments the variable
12 VAR if it is defined.
13
14 The first set of inclusions gets the headers into CPP's cache, but
15 does nothing since VAR is not defined. The second set should each
16 increment VAR, since none of the initial set should have been
17 flagged as optimizable. */
18
19 #define EMPTYL
20 #define EMPTYR
21 #define NOT !
22 #define DEFINED defined (guard)
23 #define NOT_DEFINED ! defined (guard)
24
25 #include "mi6a.h"
26 #include "mi6b.h"
27 #include "mi6c.h"
28 #include "mi6d.h"
29 #include "mi6e.h"
30
31 /* Define the macro guard, and redefine the macros to something that
32 forces compilation of the conditional blocks. */
33 #define guard
34 #undef EMPTYL
35 #define EMPTYL 1 ||
36 #undef EMPTYR
37 #define EMPTYR || 1
38 #undef NOT
39 #define NOT
40 #undef DEFINED
41 #define DEFINED 0
42 #undef NOT_DEFINED
43 #define NOT_DEFINED 1
44
45 #define VAR five
46
47 int
48 main(void)
49 {
50 unsigned int five = 0;
51
52 #include "mi6a.h"
53 #include "mi6b.h"
54 #include "mi6c.h"
55 #include "mi6d.h"
56 #include "mi6e.h"
57
58 if (five != 5)
59 abort ();
60 return 0;
61 }