tests/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 discriminants are marked artificial
   4 //  - Other fields are not marked artificial
   5 //
   6 //
   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: "{async_fn_env#0}", scope: [[ASYNC_FN]]
  21 // CHECK:      [[VARIANT:!.*]] = !DICompositeType(tag: DW_TAG_variant_part, scope: [[GEN]],
  22 // CHECK-NOT:  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-NOT:  flags: DIFlagArtificial
  27 // CHECK-SAME: )
  28 // CHECK:      {{!.*}} = !DICompositeType(tag: DW_TAG_structure_type, name: "Unresumed", scope: [[GEN]],
  29 // CHECK-NOT:  flags: DIFlagArtificial
  30 // CHECK-SAME: )
  31 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "1", scope: [[VARIANT]],
  32 // CHECK-SAME: file: [[FILE]], line: 15,
  33 // CHECK-NOT:  flags: DIFlagArtificial
  34 // CHECK-SAME: )
  35 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "2", scope: [[VARIANT]],
  36 // CHECK-SAME: file: [[FILE]], line: 15,
  37 // CHECK-NOT:  flags: DIFlagArtificial
  38 // CHECK-SAME: )
  39 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "3", scope: [[VARIANT]],
  40 // CHECK-SAME: file: [[FILE]], line: 12,
  41 // CHECK-NOT:  flags: DIFlagArtificial
  42 // CHECK-SAME: )
  43 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "4", scope: [[VARIANT]],
  44 // CHECK-SAME: file: [[FILE]], line: 14,
  45 // CHECK-NOT:  flags: DIFlagArtificial
  46 // CHECK-SAME: )
  47 // CHECK:      [[S1:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Suspend1", scope: [[GEN]],
  48 // CHECK-NOT:  flags: DIFlagArtificial
  49 // CHECK-SAME: )
  50 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "s", scope: [[S1]]
  51 // CHECK-NOT:  flags: DIFlagArtificial
  52 // CHECK-SAME: )
  53 // CHECK:      [[DISC]] = !DIDerivedType(tag: DW_TAG_member, name: "__state", scope: [[GEN]],
  54 // CHECK-SAME: flags: DIFlagArtificial
  55
  56 fn main() {
  57     let _dummy = async_fn_test();
  58 }