[clang] [Clang] Fix wrong call location of `DefaultArgExpr`. (PR #119212)

[via cfe-commits]

https://github.com/16bit-ykiko updated https://github.com/llvm/llvm-project/pull/119212

>From 64dcfdfd0a87d6ca5bfcfe5f5a8e5204c24a26d2 Mon Sep 17 00:00:00 2001
From: ykiko <ykikoykikoykiko at gmail.com>
Date: Mon, 9 Dec 2024 21:56:58 +0800
Subject: [PATCH 1/2] Fix call location of `DefaultArgExpr`.

---
 clang/lib/Sema/SemaExpr.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 14564b99de44c5..9b543d6484b85c 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -5948,7 +5948,7 @@ Sema::ConvertArgumentsForCall(CallExpr *Call, Expr *Fn,
   SmallVector<Expr *, 8> AllArgs;
   VariadicCallType CallType = getVariadicCallType(FDecl, Proto, Fn);
 
-  Invalid = GatherArgumentsForCall(Call->getBeginLoc(), FDecl, Proto, 0, Args,
+  Invalid = GatherArgumentsForCall(Call->getExprLoc(), FDecl, Proto, 0, Args,
                                    AllArgs, CallType);
   if (Invalid)
     return true;

>From 07475f1289ea30c7d228ba448c4a5071d4b672ea Mon Sep 17 00:00:00 2001
From: ykiko <ykikoykikoykiko at gmail.com>
Date: Mon, 9 Dec 2024 22:26:04 +0800
Subject: [PATCH 2/2] Add release note and test.

---
 clang/docs/ReleaseNotes.rst            |  2 ++
 clang/test/SemaCXX/source_location.cpp | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 7d846f1d447d16..785bacef67a65d 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -695,6 +695,8 @@ Bug Fixes to Compiler Builtins
 
 - Fix ``__has_builtin`` incorrectly returning ``false`` for some C++ type traits. (#GH111477)
 
+- Fix ``__builtin_source_location`` incorrectly returning wrong column for method chains. (#GH119129)
+
 Bug Fixes to Attribute Support
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/clang/test/SemaCXX/source_location.cpp b/clang/test/SemaCXX/source_location.cpp
index 8b3a5d8dd3327d..f62b9627ec0592 100644
--- a/clang/test/SemaCXX/source_location.cpp
+++ b/clang/test/SemaCXX/source_location.cpp
@@ -1012,3 +1012,21 @@ int h = Var<int>;
 
 
 }
+
+namespace GH119129 {
+struct X{
+  constexpr int foo(std::source_location loc = std::source_location::current()) {
+    return loc.line();
+  }
+};
+static_assert(X{}.foo() == __LINE__);
+static_assert(X{}.
+                foo() ==__LINE__);
+static_assert(X{}.
+
+
+                foo() ==__LINE__);
+#line 10000
+static_assert(X{}.
+                foo() == 10001);
+}
\ No newline at end of file