[gcc r15-9449] gccrs: Add `#[track_caller]` as known attribute

[Arthur Cohen via Gcc-cvs]

https://gcc.gnu.org/g:e84f76dc584192826700ebb89f726984b0788259

commit r15-9449-ge84f76dc584192826700ebb89f726984b0788259
Author: beamandala <mandalapubhav...@gmail.com>
Date:   Thu Mar 20 17:34:48 2025 -0500

    gccrs: Add `#[track_caller]` as known attribute
    
    gcc/rust/ChangeLog:
    
            * expand/rust-macro-builtins.cc 
(MacroBuiltin::builtin_transcribers):
            Add entry for track_caller.
            * util/rust-attribute-values.h: add `TRACK_CALLER` attribute.
            * util/rust-attributes.cc: add `track_caller` attribute definition.
    
    gcc/testsuite/ChangeLog:
    
            * rust/compile/track_caller.rs: New test.
    
    Signed-off-by: Bhavesh Mandalapu <mandalapubhav...@gmail.com>

Diff:
---
 gcc/rust/expand/rust-macro-builtins.cc     | 1 +
 gcc/rust/util/rust-attribute-values.h      | 1 +
 gcc/rust/util/rust-attributes.cc           | 3 ++-
 gcc/testsuite/rust/compile/track_caller.rs | 6 ++++++
 4 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/gcc/rust/expand/rust-macro-builtins.cc 
b/gcc/rust/expand/rust-macro-builtins.cc
index 39c4c46b8e0d..a1388fb1dfb3 100644
--- a/gcc/rust/expand/rust-macro-builtins.cc
+++ b/gcc/rust/expand/rust-macro-builtins.cc
@@ -137,6 +137,7 @@ std::unordered_map<std::string, AST::MacroTranscriberFunc>
     {"cfg_accessible", MacroBuiltin::sorry},
     {"rustc_const_stable", MacroBuiltin::sorry},
     {"rustc_const_unstable", MacroBuiltin::sorry},
+    {"track_caller", MacroBuiltin::sorry},
     /* Derive builtins do not need a real transcriber, but still need one. It
        should however never be called since builtin derive macros get expanded
        differently, and benefit from knowing on what kind of items they are
diff --git a/gcc/rust/util/rust-attribute-values.h 
b/gcc/rust/util/rust-attribute-values.h
index 9ef5cc52e81a..d579fa298013 100644
--- a/gcc/rust/util/rust-attribute-values.h
+++ b/gcc/rust/util/rust-attribute-values.h
@@ -58,6 +58,7 @@ public:
   static constexpr auto &RUSTC_CONST_UNSTABLE = "rustc_const_unstable";
   static constexpr auto &MAY_DANGLE = "may_dangle";
   static constexpr auto &PRELUDE_IMPORT = "prelude_import";
+  static constexpr auto &TRACK_CALLER = "track_caller";
 };
 } // namespace Values
 } // namespace Rust
diff --git a/gcc/rust/util/rust-attributes.cc b/gcc/rust/util/rust-attributes.cc
index 03452c75bd8a..df0fe1b0bcac 100644
--- a/gcc/rust/util/rust-attributes.cc
+++ b/gcc/rust/util/rust-attributes.cc
@@ -75,7 +75,8 @@ static const BuiltinAttrDefinition __definitions[]
      // assuming we keep these for static analysis
      {Attrs::RUSTC_CONST_STABLE, STATIC_ANALYSIS},
      {Attrs::RUSTC_CONST_UNSTABLE, STATIC_ANALYSIS},
-     {Attrs::PRELUDE_IMPORT, NAME_RESOLUTION}};
+     {Attrs::PRELUDE_IMPORT, NAME_RESOLUTION},
+     {Attrs::TRACK_CALLER, CODE_GENERATION}};
 
 BuiltinAttributeMappings *
 BuiltinAttributeMappings::get ()
diff --git a/gcc/testsuite/rust/compile/track_caller.rs 
b/gcc/testsuite/rust/compile/track_caller.rs
new file mode 100644
index 000000000000..fd1d84295887
--- /dev/null
+++ b/gcc/testsuite/rust/compile/track_caller.rs
@@ -0,0 +1,6 @@
+#[track_caller]
+fn foo() {}
+
+fn main() {
+    foo();
+}