src/test/codegen/async-fn-debug.rs

   1 // Verify debuginfo for async fn:
   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 async fn foo() {}
  11 async fn async_fn_test() {
  12     foo().await;
  13     let s = String::from("foo");
  14     foo().await;
  15 }
  16
  17 // FIXME: No way to reliably check the filename.
  18
  19 // CHECK-DAG:  [[ASYNC_FN:!.*]] = !DINamespace(name: "async_fn_test"
  20 // CHECK-DAG:  [[GEN:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "generator-0", scope: [[ASYNC_FN]], {{.*}}flags: DIFlagArtificial
  21 // CHECK:      [[VARIANT:!.*]] = !DICompositeType(tag: DW_TAG_variant_part, scope: [[ASYNC_FN]],
  22 // CHECK-SAME: flags: DIFlagArtificial
  23 // CHECK-SAME: discriminator: [[DISC:![0-9]*]]
  24 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "0", scope: [[VARIANT]],
  25 // CHECK-SAME: file: [[FILE:![0-9]*]], line: 11,
  26 // CHECK-SAME: flags: DIFlagArtificial
  27 // CHECK:      {{!.*}} = !DICompositeType(tag: DW_TAG_structure_type, name: "Unresumed", scope: [[GEN]],
  28 // CHECK-SAME: flags: DIFlagArtificial
  29 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "1", scope: [[VARIANT]],
  30 // CHECK-SAME: file: [[FILE]], line: 15,
  31 // CHECK-SAME: flags: DIFlagArtificial
  32 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "2", scope: [[VARIANT]],
  33 // CHECK-SAME: file: [[FILE]], line: 15,
  34 // CHECK-SAME: flags: DIFlagArtificial
  35 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "3", scope: [[VARIANT]],
  36 // CHECK-SAME: file: [[FILE]], line: 12,
  37 // CHECK-SAME: flags: DIFlagArtificial
  38 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "4", scope: [[VARIANT]],
  39 // CHECK-SAME: file: [[FILE]], line: 14,
  40 // CHECK-SAME: flags: DIFlagArtificial
  41 // CHECK:      [[S1:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Suspend1", scope: [[GEN]],
  42 // CHECK-SAME: flags: DIFlagArtificial
  43 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "s", scope: [[S1]]
  44 // CHECK-NOT:  flags: DIFlagArtificial
  45 // CHECK-SAME: )
  46 // CHECK:      [[DISC]] = !DIDerivedType(tag: DW_TAG_member, name: "__state", scope: [[ASYNC_FN]],
  47 // CHECK-SAME: flags: DIFlagArtificial
  48
  49 fn main() {
  50     let _dummy = async_fn_test();
  51 }