diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -34,7 +34,6 @@
     }
     module inttypes_h {
       header "inttypes.h"
-      export stdint_h
       export *
     }
     // <iso646.h> provided by compiler.
@@ -77,10 +76,6 @@
     module stdint_h {
       header "stdint.h"
       export *
-      // FIXME: This module only exists on OS X and for some reason the
-      // wildcard above doesn't export it. Removing this breaks the tests
-      // for C compatibility headers in C++17 mode with modules enabled.
-      export Darwin.C.stdint
     }
     module stdio_h {
       // <stdio.h>'s __need_* macros require textual inclusion.
@@ -118,7 +113,6 @@
   // allow their use in extern "C" contexts.
   module complex_h {
     header "complex.h"
-    export ccomplex
     export *
   }
   module tgmath_h {
@@ -134,7 +128,6 @@
     }
     module ccomplex {
       header "ccomplex"
-      export complex
       export *
     }
     module cctype {
@@ -155,7 +148,6 @@
     }
     module cinttypes {
       header "cinttypes"
-      export cstdint
       export *
     }
     module ciso646 {
@@ -198,7 +190,6 @@
     }
     module cstdint {
       header "cstdint"
-      export depr.stdint_h
       export *
     }
     module cstdio {
@@ -215,8 +206,6 @@
     }
     module ctgmath {
       header "ctgmath"
-      export ccomplex
-      export cmath
       export *
     }
     module ctime {
@@ -241,7 +230,6 @@
 
   module algorithm {
     header "algorithm"
-    export initializer_list
     export *
 
     module __algorithm {
@@ -706,7 +694,6 @@
   }
   module array {
     header "array"
-    export initializer_list
     export *
 
     module array_fwd { private header "__fwd/array.h" }
@@ -766,8 +753,6 @@
   }
   module bitset {
     header "bitset"
-    export string
-    export iosfwd
     export *
   }
   // No submodule for cassert. It fundamentally needs repeated, textual inclusion.
@@ -923,7 +908,6 @@
   }
   module deque {
     header "deque"
-    export initializer_list
     export *
   }
   module exception {
@@ -1032,7 +1016,6 @@
   }
   module forward_list {
     header "forward_list"
-    export initializer_list
     export *
   }
   module fstream {
@@ -1043,8 +1026,6 @@
   }
   module functional {
     header "functional"
-    // the contents of __type_traits/unwrap_ref.h should be available from functional too.
-    export type_traits.unwrap_ref
     export *
 
     module __functional {
@@ -1109,7 +1090,6 @@
   module ios {
     @requires_LIBCXX_ENABLE_LOCALIZATION@
     header "ios"
-    export iosfwd
     export *
 
     module __ios {
@@ -1131,10 +1111,6 @@
   module iostream {
     @requires_LIBCXX_ENABLE_LOCALIZATION@
     header "iostream"
-    export ios
-    export streambuf
-    export istream
-    export ostream
     export *
   }
   module istream {
@@ -1231,7 +1207,6 @@
   }
   module list {
     header "list"
-    export initializer_list
     export *
   }
   module locale {
@@ -1247,7 +1222,6 @@
   }
   module map {
     header "map"
-    export initializer_list
     export *
   }
   module mdspan {
@@ -1384,12 +1358,10 @@
   }
   module queue {
     header "queue"
-    export initializer_list
     export *
   }
   module random {
     header "random"
-    export initializer_list
     export *
 
     module __random {
@@ -1443,9 +1415,6 @@
   }
   module ranges {
     header "ranges"
-    export compare
-    export initializer_list
-    export iterator
     export *
 
     module __ranges {
@@ -1525,7 +1494,6 @@
   module regex {
     @requires_LIBCXX_ENABLE_LOCALIZATION@
     header "regex"
-    export initializer_list
     export *
   }
   module scoped_allocator {
@@ -1539,7 +1507,6 @@
   }
   module set {
     header "set"
-    export initializer_list
     export *
   }
   module shared_mutex {
@@ -1565,7 +1532,6 @@
   }
   module stack {
     header "stack"
-    export initializer_list
     export *
   }
   module stdexcept {
@@ -1593,8 +1559,6 @@
   }
   module string {
     header "string"
-    export initializer_list
-    export string_view
     module __string {
       module char_traits           { private header "__string/char_traits.h" }
       module constexpr_c_functions {
@@ -1895,17 +1859,14 @@
   }
   module unordered_map {
     header "unordered_map"
-    export initializer_list
     export *
   }
   module unordered_set {
     header "unordered_set"
-    export initializer_list
     export *
   }
   module utility {
     header "utility"
-    export initializer_list
     export *
 
     module __utility {
@@ -1960,7 +1921,6 @@
   }
   module valarray {
     header "valarray"
-    export initializer_list
     export *
   }
   module variant {
@@ -1973,7 +1933,6 @@
   }
   module vector {
     header "vector"
-    export initializer_list
     export *
   }
   module version {
@@ -2003,7 +1962,6 @@
   // This one needs to appear after __tree to work around issues with modules in Objective-C++ mode.
   module coroutine {
     header "coroutine"
-    export compare
     export *
 
     module __coroutine {