1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s 2*f4a2713aSLionel Sambuc 3*f4a2713aSLionel Sambuc typedef unsigned char uint8_t; 4*f4a2713aSLionel Sambuc typedef unsigned short uint16_t; 5*f4a2713aSLionel Sambuc typedef unsigned int uint32_t; 6*f4a2713aSLionel Sambuc 7*f4a2713aSLionel Sambuc #pragma pack(push, 1) 8*f4a2713aSLionel Sambuc typedef struct 9*f4a2713aSLionel Sambuc { 10*f4a2713aSLionel Sambuc uint32_t a; 11*f4a2713aSLionel Sambuc } foo; 12*f4a2713aSLionel Sambuc 13*f4a2713aSLionel Sambuc typedef struct { 14*f4a2713aSLionel Sambuc uint8_t major; 15*f4a2713aSLionel Sambuc uint8_t minor; 16*f4a2713aSLionel Sambuc uint16_t build; 17*f4a2713aSLionel Sambuc } VERSION; 18*f4a2713aSLionel Sambuc 19*f4a2713aSLionel Sambuc typedef struct { 20*f4a2713aSLionel Sambuc uint8_t a[5]; 21*f4a2713aSLionel Sambuc VERSION version; 22*f4a2713aSLionel Sambuc uint8_t b; 23*f4a2713aSLionel Sambuc foo d; 24*f4a2713aSLionel Sambuc uint32_t guard; 25*f4a2713aSLionel Sambuc } bar; 26*f4a2713aSLionel Sambuc #pragma pack(pop) 27*f4a2713aSLionel Sambuc 28*f4a2713aSLionel Sambuc barsize(void)29*f4a2713aSLionel Sambucunsigned barsize(void) { 30*f4a2713aSLionel Sambuc // CHECK: ret i32 18 31*f4a2713aSLionel Sambuc return sizeof(bar); 32*f4a2713aSLionel Sambuc } 33