1ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao// RUN: %clang_cc1 -emit-llvm < %s -o - 2ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 3ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao// A nice and complicated initialization example with unions from Python 4ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaotypedef int Py_ssize_t; 5ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 6ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaotypedef union _gc_head { 7ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao struct { 8ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao union _gc_head *gc_next; 9ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao union _gc_head *gc_prev; 10ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao Py_ssize_t gc_refs; 11ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao } gc; 12ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao long double dummy; /* force worst-case alignment */ 13ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao} PyGC_Head; 14ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 15ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaostruct gc_generation { 16ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao PyGC_Head head; 17ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao int threshold; /* collection threshold */ 18ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao int count; /* count of allocations or collections of younger 19ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao generations */ 20ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao}; 21ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 22ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao#define NUM_GENERATIONS 3 23ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao#define GEN_HEAD(n) (&generations[n].head) 24ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 25ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao/* linked lists of container objects */ 26ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaostruct gc_generation generations[NUM_GENERATIONS] = { 27ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao /* PyGC_Head, threshold, count */ 28ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao {{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700, 0}, 29ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao {{{GEN_HEAD(1), GEN_HEAD(1), 0}}, 10, 0}, 30ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao {{{GEN_HEAD(2), GEN_HEAD(2), 0}}, 10, 0}, 31ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao}; 32