[llvm] c5cb505 - [gn build] Port a354fd56c504

[LLVM GN Syncbot via llvm-commits]

Author: LLVM GN Syncbot
Date: 2021-04-25T11:27:54Z
New Revision: c5cb5053a9626d1703368ec8dbd33589e603bec4

URL: https://github.com/llvm/llvm-project/commit/c5cb5053a9626d1703368ec8dbd33589e603bec4
DIFF: https://github.com/llvm/llvm-project/commit/c5cb5053a9626d1703368ec8dbd33589e603bec4.diff

LOG: [gn build] Port a354fd56c504

Added: 
    

Modified: 
    llvm/utils/gn/secondary/libcxx/include/BUILD.gn

Removed: 
    


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diff  --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index ffa80e885b15..e67f11b635ce 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -125,6 +125,7 @@ if (current_toolchain == default_toolchain) {
       "__tree",
       "__tuple",
       "__undef_macros",
+      "__utility/to_underlying.h",
       "algorithm",
       "any",
       "array",