34994cbcbf
this does is reconstruct the type for structs and arrays if the type wouldn't be compatible otherwise. The assertion about packing in the struct type reconstruction code sucks, but I don't see any obvious way to fix it. Maybe we need a general utility method to take a list of types and alignments and try to construct an unpacked type if possible? llvm-svn: 51785
32 lines
830 B
C
32 lines
830 B
C
// RUN: clang -emit-llvm < %s -o -
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// A nice and complicated initialization example with unions from Python
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typedef int Py_ssize_t;
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typedef union _gc_head {
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struct {
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union _gc_head *gc_next;
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union _gc_head *gc_prev;
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Py_ssize_t gc_refs;
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} gc;
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long double dummy; /* force worst-case alignment */
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} PyGC_Head;
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struct gc_generation {
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PyGC_Head head;
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int threshold; /* collection threshold */
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int count; /* count of allocations or collections of younger
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generations */
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};
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#define NUM_GENERATIONS 3
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#define GEN_HEAD(n) (&generations[n].head)
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/* linked lists of container objects */
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struct gc_generation generations[NUM_GENERATIONS] = {
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/* PyGC_Head, threshold, count */
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{{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700, 0},
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{{{GEN_HEAD(1), GEN_HEAD(1), 0}}, 10, 0},
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{{{GEN_HEAD(2), GEN_HEAD(2), 0}}, 10, 0},
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};
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