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view tests/mini/ptrarith.d @ 1210:3d4581761b4c
Add some alignment info where LLVM might otherwise be more pessimistic.
In particular, %.nest_arg is always aligned even though it's bitcast from i8*.
Pointers in vtables are also guaranteed to be stored at aligned addresses.
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Sun, 12 Apr 2009 21:56:43 +0200 |
parents | 1bb99290e03a |
children |
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extern(C) int printf(char*, ...); void main() { printf("Pointer arithmetic test\n"); int* p; printf("0x%x\n", p); assert(p++ is null); assert(cast(size_t)p == 4); printf("0x%x\n", p); p--; assert(p is null); printf("0x%x\n", p); int d = 4; p+=d; printf("0x%x\n", p); assert(cast(size_t)p == 16); d = 2; p+=d; printf("0x%x\n", p); assert(cast(size_t)p == 0x18); d = 6; p-=d; printf("0x%x\n", p); assert(p is null); printf(" SUCCESS\n"); } void fill_byte_array(ubyte* a, size_t n, ubyte v) { auto p = a; auto end = a+n; while (p !is end) *p++ = v; }