src/test/codegen/generator-debug.rs

   1 // Verify debuginfo for generators:
   2 //  - Each variant points to the file and line of its yield point
   3 //  - The generator types and variants are marked artificial
   4 //  - Captured vars from the source are not marked artificial
   5 //
   6 // ignore-tidy-linelength
   7 // compile-flags: -C debuginfo=2 --edition=2018
   8 // ignore-msvc
   9
  10 #![feature(generators, generator_trait)]
  11 use std::ops::Generator;
  12
  13 fn generator_test() -> impl Generator<Yield = i32, Return = ()> {
  14     || {
  15         yield 0;
  16         let s = String::from("foo");
  17         yield 1;
  18     }
  19 }
  20
  21 // FIXME: No way to reliably check the filename.
  22
  23 // CHECK-DAG:  [[GEN_FN:!.*]] = !DINamespace(name: "generator_test"
  24 // CHECK-DAG:  [[GEN:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "generator-0", scope: [[GEN_FN]], {{.*}}flags: DIFlagArtificial
  25 // CHECK:      [[VARIANT:!.*]] = !DICompositeType(tag: DW_TAG_variant_part, scope: [[GEN_FN]],
  26 // CHECK-SAME: flags: DIFlagArtificial
  27 // CHECK-SAME: discriminator: [[DISC:![0-9]*]]
  28 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "0", scope: [[VARIANT]],
  29 // CHECK-SAME: file: [[FILE:![0-9]*]], line: 14,
  30 // CHECK-SAME: flags: DIFlagArtificial
  31 // CHECK:      {{!.*}} = !DICompositeType(tag: DW_TAG_structure_type, name: "Unresumed", scope: [[GEN]],
  32 // CHECK-SAME: flags: DIFlagArtificial
  33 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "1", scope: [[VARIANT]],
  34 // CHECK-SAME: file: [[FILE]], line: 18,
  35 // CHECK-SAME: flags: DIFlagArtificial
  36 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "2", scope: [[VARIANT]],
  37 // CHECK-SAME: file: [[FILE]], line: 18,
  38 // CHECK-SAME: flags: DIFlagArtificial
  39 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "3", scope: [[VARIANT]],
  40 // CHECK-SAME: file: [[FILE]], line: 15,
  41 // CHECK-SAME: flags: DIFlagArtificial
  42 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "4", scope: [[VARIANT]],
  43 // CHECK-SAME: file: [[FILE]], line: 17,
  44 // CHECK-SAME: flags: DIFlagArtificial
  45 // CHECK:      [[S1:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Suspend1", scope: [[GEN]],
  46 // CHECK-SAME: flags: DIFlagArtificial
  47 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "s", scope: [[S1]]
  48 // CHECK-NOT:  flags: DIFlagArtificial
  49 // CHECK-SAME: )
  50 // CHECK:      [[DISC]] = !DIDerivedType(tag: DW_TAG_member, name: "__state", scope: [[GEN_FN]],
  51 // CHECK-SAME: flags: DIFlagArtificial
  52
  53 fn main() {
  54     let _dummy = generator_test();
  55 }