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-rw-r--r--clang/lib/Headers/stdint.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/Headers/stdint.h b/clang/lib/Headers/stdint.h
index 47fc97670f1..192f653e95a 100644
--- a/clang/lib/Headers/stdint.h
+++ b/clang/lib/Headers/stdint.h
@@ -7,7 +7,12 @@
\*===----------------------------------------------------------------------===*/
#ifndef __CLANG_STDINT_H
+// AIX system headers need stdint.h to be re-enterable while _STD_TYPES_T
+// is defined until an inclusion of it without _STD_TYPES_T occurs, in which
+// case the header guard macro is defined.
+#if !defined(_AIX) || !defined(_STD_TYPES_T) || !defined(__STDC_HOSTED__)
#define __CLANG_STDINT_H
+#endif
/* If we're hosted, fall back to the system's stdint.h, which might have
* additional definitions.
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