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ASTWalker visits a lazy_initializer_expr once within its associated var_decl (by way of the parent nominal type). However, SILGen visits the lazy_initializer_expr while inside of the var_decl's getter. The result is that there is no coverage mapping information for the contents of the lazy init within the getter's SILProfiler. Fixing this will require reworking how profile counters are assigned to be more in line with what SILGen needs. As a stop-gap, this patch prevents SILGen from asserting that coverage mappings are complete with a defensive check which prevents a crash seen in SR-8429. rdar://42792053
50 lines
1.5 KiB
Swift
50 lines
1.5 KiB
Swift
// RUN: %target-swift-frontend -Xllvm -sil-full-demangle -profile-generate -profile-coverage-mapping -emit-sil -module-name coverage_class %s | %FileCheck %s
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class C {
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// CHECK-LABEL: sil_coverage_map {{.*}}// coverage_class.C.foo
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func foo() {}
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// CHECK: sil_coverage_map {{.*}}// __ntd_C_line:[[@LINE-3]]:1
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// CHECK-NEXT: [[@LINE+1]]:10 -> [[@LINE+1]]:12
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init() {}
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// CHECK-LABEL: sil_coverage_map {{.*}}// coverage_class.C.__deallocating_deinit
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deinit {}
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}
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extension C {
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// CHECK-LABEL: sil_coverage_map {{.*}}// coverage_class.C.bar
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func bar() {}
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}
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struct S {
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// CHECK-LABEL: sil_coverage_map {{.*}}// coverage_class.S.foo
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func foo() {}
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// CHECK: sil_coverage_map {{.*}}// __ntd_S_line:[[@LINE-3]]:1
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init() {}
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}
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enum E {
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case X, Y, Z
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// CHECK-LABEL: sil_coverage_map {{.*}}// coverage_class.E.foo
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func foo() {}
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// CHECK: sil_coverage_map {{.*}}// __ntd_E_line:[[@LINE-4]]:1
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// CHECK-NEXT: [[@LINE+1]]:10 -> [[@LINE+1]]:23
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init() { self = .Y }
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}
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var g1: Bool = true
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struct S2 {
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// CHECK: sil_coverage_map {{.*}}// __ntd_S2_line:[[@LINE-1]]:1
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// CHECK-NEXT: [[@LINE+2]]:22 -> [[@LINE+2]]:23 : 0
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// CHECK-NEXT: [[@LINE+1]]:26 -> [[@LINE+1]]:27 : (1 - 0)
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var m1: Int = g1 ? 0 : 1
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}
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// Test that the crash from SR-8429 is avoided. Follow-up work is
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// needed to generate the correct coverage mapping here. Coverage for
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// `offset` should be associated with its getter, not the class
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// constructor.
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class C2 {
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lazy var offset: Int = true ? 30 : 55
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}
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