1 /* PR middle-end/31309 */
2 /* Origin: Peeter Joot <peeterj@ca.ibm.com> */
3
4 /* { dg-do run { target *-*-linux* *-*-gnu* } } */
5
6 #include <sys/mman.h>
7 #include <string.h>
8 #include <stdio.h>
9 #include <errno.h>
10 #include <unistd.h>
11
12 #if defined(STACK_SIZE) && (STACK_SIZE < 128*1024)
13 #define CHUNK_SIZE 4096
14 #else
15 #define CHUNK_SIZE 16384
16 #endif
17
ossAlignX(unsigned long i,unsigned long X)18 unsigned long ossAlignX(unsigned long i, unsigned long X)
19 {
20 return ((i + (X - 1)) & ~(unsigned long) (X - 1));
21 }
22
23 struct STRUCT_6_BYTES
24 {
25 unsigned char slot[sizeof(unsigned short)];
26 unsigned char page[sizeof(unsigned int)];
27 };
28
29 struct SQLU_DICT_INFO_0
30 {
31 void *pBlah;
32 char bSomeFlag1;
33 char bSomeFlag2;
34 struct STRUCT_6_BYTES dRID;
35 };
36
37 struct SQLU_DATAPART_0
38 {
39 struct SQLU_DICT_INFO_0 *pDictRidderInfo;
40 };
41
42 struct XXX
43 {
44 struct SQLU_DATAPART_0 *m_pDatapart;
45 };
46
INIT_6_BYTES_ZERO()47 struct STRUCT_6_BYTES INIT_6_BYTES_ZERO()
48 {
49 struct STRUCT_6_BYTES ridOut = {{0,0}, {0,0,0,0}};
50 return ridOut;
51 }
52
Initialize(struct XXX * this,int iIndex)53 void Initialize(struct XXX *this, int iIndex)
54 {
55 struct SQLU_DICT_INFO_0 *pDictRidderInfo
56 = this->m_pDatapart[iIndex].pDictRidderInfo;
57 pDictRidderInfo->bSomeFlag1 = 0;
58 pDictRidderInfo->bSomeFlag2 = 0;
59 pDictRidderInfo->dRID = INIT_6_BYTES_ZERO();
60 }
61
main(void)62 int main(void)
63 {
64 int rc;
65
66 struct stuff
67 {
68 char c0[CHUNK_SIZE-sizeof(struct XXX)];
69 struct XXX o;
70 char c1[CHUNK_SIZE*2-sizeof(struct SQLU_DATAPART_0)];
71 struct SQLU_DATAPART_0 dp;
72 char c2[CHUNK_SIZE*2-sizeof(struct SQLU_DICT_INFO_0)];
73 struct SQLU_DICT_INFO_0 di;
74 char c3[CHUNK_SIZE];
75 };
76
77 char buf[sizeof(struct stuff)+CHUNK_SIZE];
78 struct stuff *u
79 = (struct stuff *)ossAlignX((unsigned long)&buf[0], CHUNK_SIZE);
80
81 /* This test assumes system memory page
82 size of CHUNK_SIZE bytes or less. */
83 if (sysconf(_SC_PAGESIZE) > CHUNK_SIZE)
84 return 0;
85
86 memset(u, 1, sizeof(struct stuff));
87 u->c1[0] = '\xAA';
88 u->c2[0] = '\xBB';
89 u->c3[0] = '\xCC';
90
91 rc = mprotect(u->c1, CHUNK_SIZE, PROT_NONE);
92 if (rc == -1)
93 printf("mprotect:c1: %d: %d(%s)\n", rc, errno, strerror(errno));
94
95 rc = mprotect(u->c2, CHUNK_SIZE, PROT_NONE);
96 if (rc == -1)
97 printf("mprotect:c2: %d: %d(%s)\n", rc, errno, strerror(errno));
98
99 rc = mprotect(u->c3, CHUNK_SIZE, PROT_NONE);
100 if (rc == -1)
101 printf("mprotect:c3: %d: %d(%s)\n", rc, errno, strerror(errno));
102
103 u->o.m_pDatapart = &u->dp;
104 u->dp.pDictRidderInfo = &u->di;
105 Initialize(&u->o, 0);
106
107 mprotect(u->c1, CHUNK_SIZE, PROT_READ|PROT_WRITE);
108 mprotect(u->c2, CHUNK_SIZE, PROT_READ|PROT_WRITE);
109 mprotect(u->c3, CHUNK_SIZE, PROT_READ|PROT_WRITE);
110
111 return 0;
112 }
113