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/* PR middle-end/31309 */
/* Origin: Peeter Joot <peeterj@ca.ibm.com> */
/* { dg-do run { target *-*-linux* *-*-gnu* } } */
#include <sys/mman.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#if defined(STACK_SIZE) && (STACK_SIZE < 128*1024)
#define CHUNK_SIZE 4096
#else
#define CHUNK_SIZE 16384
#endif
unsigned long ossAlignX(unsigned long i, unsigned long X)
{
return ((i + (X - 1)) & ~(unsigned long) (X - 1));
}
struct STRUCT_6_BYTES
{
unsigned char slot[sizeof(unsigned short)];
unsigned char page[sizeof(unsigned int)];
};
struct SQLU_DICT_INFO_0
{
void *pBlah;
char bSomeFlag1;
char bSomeFlag2;
struct STRUCT_6_BYTES dRID;
};
struct SQLU_DATAPART_0
{
struct SQLU_DICT_INFO_0 *pDictRidderInfo;
};
struct XXX
{
struct SQLU_DATAPART_0 *m_pDatapart;
};
struct STRUCT_6_BYTES INIT_6_BYTES_ZERO()
{
struct STRUCT_6_BYTES ridOut = {{0,0}, {0,0,0,0}};
return ridOut;
}
void Initialize(struct XXX *this, int iIndex)
{
struct SQLU_DICT_INFO_0 *pDictRidderInfo
= this->m_pDatapart[iIndex].pDictRidderInfo;
pDictRidderInfo->bSomeFlag1 = 0;
pDictRidderInfo->bSomeFlag2 = 0;
pDictRidderInfo->dRID = INIT_6_BYTES_ZERO();
}
int main(void)
{
int rc;
struct stuff
{
char c0[CHUNK_SIZE-sizeof(struct XXX)];
struct XXX o;
char c1[CHUNK_SIZE*2-sizeof(struct SQLU_DATAPART_0)];
struct SQLU_DATAPART_0 dp;
char c2[CHUNK_SIZE*2-sizeof(struct SQLU_DICT_INFO_0)];
struct SQLU_DICT_INFO_0 di;
char c3[CHUNK_SIZE];
};
char buf[sizeof(struct stuff)+CHUNK_SIZE];
struct stuff *u
= (struct stuff *)ossAlignX((unsigned long)&buf[0], CHUNK_SIZE);
/* This test assumes system memory page
size of CHUNK_SIZE bytes or less. */
if (sysconf(_SC_PAGESIZE) > CHUNK_SIZE)
return 0;
memset(u, 1, sizeof(struct stuff));
u->c1[0] = '\xAA';
u->c2[0] = '\xBB';
u->c3[0] = '\xCC';
rc = mprotect(u->c1, CHUNK_SIZE, PROT_NONE);
if (rc == -1)
printf("mprotect:c1: %d: %d(%s)\n", rc, errno, strerror(errno));
rc = mprotect(u->c2, CHUNK_SIZE, PROT_NONE);
if (rc == -1)
printf("mprotect:c2: %d: %d(%s)\n", rc, errno, strerror(errno));
rc = mprotect(u->c3, CHUNK_SIZE, PROT_NONE);
if (rc == -1)
printf("mprotect:c3: %d: %d(%s)\n", rc, errno, strerror(errno));
u->o.m_pDatapart = &u->dp;
u->dp.pDictRidderInfo = &u->di;
Initialize(&u->o, 0);
mprotect(u->c1, CHUNK_SIZE, PROT_READ|PROT_WRITE);
mprotect(u->c2, CHUNK_SIZE, PROT_READ|PROT_WRITE);
mprotect(u->c3, CHUNK_SIZE, PROT_READ|PROT_WRITE);
return 0;
}
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