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-rw-r--r--system/lib/libcxx/ios.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/system/lib/libcxx/ios.cpp b/system/lib/libcxx/ios.cpp
index bbe3c072..004d3183 100644
--- a/system/lib/libcxx/ios.cpp
+++ b/system/lib/libcxx/ios.cpp
@@ -149,7 +149,7 @@ ios_base::getloc() const
}
// xalloc
-#if __has_feature(cxx_atomic)
+#if __has_feature(cxx_atomic) && !defined(__EMSCRIPTEN__)
atomic<int> ios_base::__xindex_ = ATOMIC_VAR_INIT(0);
#else
int ios_base::__xindex_ = 0;