Files
rust/tests/codegen-llvm
Stuart Cook b3962e8811 Rollup merge of #144407 - godzie44:godzie44/fix_dwarf_inconsistency, r=wesleywiser
fix(debuginfo): disable overflow check for recursive non-enum types

Commit b10edb4 introduce an overflow check when generating debuginfo for expanding recursive types. While this check works correctly for enums, it can incorrectly prune valid debug information for structures.

For example see rust-lang/rust#143241 (https://github.com/rust-lang/rust/issues/143241#issuecomment-3073721477). Furthermore, for structures such check does not make sense, since structures with recursively expanding types simply will not compile (there is a `hir_analysis_recursive_generic_parameter` for that).

closes rust-lang/rust#143241
2025-07-29 20:19:49 +10:00
..

The files here use the LLVM FileCheck framework, documented at https://llvm.org/docs/CommandGuide/FileCheck.html.

One extension worth noting is the use of revisions as custom prefixes for FileCheck. If your codegen test has different behavior based on the chosen target or different compiler flags that you want to exercise, you can use a revisions annotation, like so:

// revisions: aaa bbb
// [bbb] compile-flags: --flags-for-bbb

After specifying those variations, you can write different expected, or explicitly unexpected output by using <prefix>-SAME: and <prefix>-NOT:, like so:

// CHECK: expected code
// aaa-SAME: emitted-only-for-aaa
// aaa-NOT:                        emitted-only-for-bbb
// bbb-NOT:  emitted-only-for-aaa
// bbb-SAME:                       emitted-only-for-bbb