"os"
	"sync/atomic"
)

// CoverBlock records the coverage data for a single basic block.
// The fields are 1-indexed, as in an editor: The opening line of
// the file is number 1, for example. Columns are measured
// in bytes.
// NOTE: This struct is internal to the testing infrastructure and may change.
// It is not covered (yet) by the Go 1 compatibility guidelines.
type CoverBlock struct {

	}
	if coverCounters[fileName] != nil {
		// Already registered.
		return
	}
	coverCounters[fileName] = counter
	block := make([]testing.CoverBlock, len(counter))
	for i := range counter {
		block[i] = testing.CoverBlock{
			Line0: pos[3*i+0],
			Col0: uint16(pos[3*i+2]),
			Line1: pos[3*i+1],
			Col1: uint16(pos[3*i+2]>>16),
			Stmts: numStmts[i],
		}
	}

		{"Cover.Counters", Field, 2},
		{"Cover.CoveredPackages", Field, 2},
		{"Cover.Mode", Field, 2},
		{"CoverBlock", Type, 2},
		{"CoverBlock.Col0", Field, 2},
		{"CoverBlock.Col1", Field, 2},
		{"CoverBlock.Line0", Field, 2},
		{"CoverBlock.Line1", Field, 2},
		{"CoverBlock.Stmts", Field, 2},
		{"CoverMode", Func, 8},
		{"Coverage", Func, 4},
		{"F", Type, 18},
		{"Init", Func, 13},

pkg testing, type Cover struct, Blocks map[string][]CoverBlock
pkg testing, type Cover struct, Counters map[string][]uint32
pkg testing, type Cover struct, CoveredPackages string
pkg testing, type Cover struct, Mode string
pkg testing, type CoverBlock struct
pkg testing, type CoverBlock struct, Col0 uint16
pkg testing, type CoverBlock struct, Col1 uint16
pkg testing, type CoverBlock struct, Line0 uint32