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//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK):-cpu -output-using-type -compile-arg -msvc-style-bitfield-packing
// MSVC packing with zero-width bitfields
// CHECK: 123
// CHECK-NEXT: 4567
// CHECK-NEXT: 1
// CHECK-NEXT: 0
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<uint> outputBuffer;
struct S {
int foo : 8; // First backing field
int breaker : 0; // Forces new backing field
int bar : 24; // Second backing field
};
[numthreads(1, 1, 1)]
void computeMain()
{
S s;
s.foo = 123;
s.bar = 4567;
s.breaker = 9999; // Zero-width field, assignment has no effect
outputBuffer[0] = s.foo;
outputBuffer[1] = s.bar;
outputBuffer[2] = sizeof(S) == sizeof(int) * 2; // Two backing fields
outputBuffer[3] = s.breaker; // Always returns 0
}
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