[libc++] Fix <charconv> not exporting std::errc

[philnik777]

<charconv> doesn't properly export std::errc with locales disabled, which causes the CI to fail. This fixed the modulemap to let from_chars_result export std::errc, like it's supposed to do.

[EricWF]

LGTM (I came up with the same fix: #146269)
Please also take a look at this fix for a recently introduced failure (#146240 )

[llvmbot]

@llvm/pr-subscribers-libcxx

Author: Nikolas Klauser (philnik777)

Changes

<charconv> doesn't properly export std::errc with locales disabled, which causes the CI to fail. This fixed the modulemap to let from_chars_result export std::errc, like it's supposed to do.

---

Full diff: https://github.com/llvm/llvm-project/pull/146268.diff

1 Files Affected:

• (modified) libcxx/include/module.modulemap.in (+4-1)

diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
index f878e15d70b1a..b00a8ebd54623 100644
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -934,7 +934,10 @@ module std [system] {
     module chars_format               { header "__charconv/chars_format.h" }
     module from_chars_floating_point  { header "__charconv/from_chars_floating_point.h" }
     module from_chars_integral        { header "__charconv/from_chars_integral.h" }
-    module from_chars_result          { header "__charconv/from_chars_result.h" }
+    module from_chars_result          {
+      header "__charconv/from_chars_result.h"
+      export std.system_error.errc
+    }
     module tables                     { header "__charconv/tables.h" }
     module to_chars                   { header "__charconv/to_chars.h" }
     module to_chars_base_10           { header "__charconv/to_chars_base_10.h" }