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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [struct-ret-3.c] - Rev 298
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/* PR middle-end/31309 */ /* Origin: Peeter Joot <peeterj@ca.ibm.com> */ /* { dg-do run { target *-*-linux* } } */ #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; }