llvm · AaronBallman · Apr 10, 2025
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
@@ -122,6 +122,9 @@ C Language Changes
 - Clang now allows an ``inline`` specifier on a typedef declaration of a
   function type in Microsoft compatibility mode. #GH124869
 - Clang now allows ``restrict`` qualifier for array types with pointer elements (#GH92847).
+- Clang no longer provides the ``tgmath.h`` header as part of the compiler-
+  provided header files. This file needs to be provided by the C Standard
+  Library being compiled against.
 
 C2y Feature Support
 ^^^^^^^^^^^^^^^^^^^

diff --git a/clang/lib/Headers/CMakeLists.txt b/clang/lib/Headers/CMakeLists.txt
@@ -33,7 +33,6 @@ set(core_files
   __stddef_wint_t.h
   stdint.h
   stdnoreturn.h
-  tgmath.h
   unwind.h
   varargs.h
   )

diff --git a/clang/lib/Headers/module.modulemap b/clang/lib/Headers/module.modulemap
@@ -305,11 +305,6 @@ module _Builtin_stdnoreturn [system] {
   export *
 }
 
-module _Builtin_tgmath [system] {
-  header "tgmath.h"
-  export *
-}
-
 module _Builtin_unwind [system] {
   header "unwind.h"
   export *