AIX system headers need stdint.h and inttypes.h to be re-enterable
Summary:
AIX system headers need stdint.h and inttypes.h to be re-enterable when macro _STD_TYPES_T is defined so that limit macro definitions such as UINT32_MAX can be found. This patch attempts to allow that on AIX.
Reviewers: hubert.reinterpretcast, jasonliu, mclow.lists, EricWF
Reviewed by: hubert.reinterpretcast, mclow.lists
Subscribers: jfb, jsji, christof, cfe-commits, libcxx-commits, llvm-commits
Tags: #LLVM, #clang, #libc++
Differential Revision: https://reviews.llvm.org/D59253
llvm-svn: 363939
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: ab4bcd844ab9df699c7f396786dc114f85ab8c45
diff --git a/include/stdint.h b/include/stdint.h
index c892298..d7b6902 100644
--- a/include/stdint.h
+++ b/include/stdint.h
@@ -8,7 +8,12 @@
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_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)
#define _LIBCPP_STDINT_H
+#endif // _STD_TYPES_T
/*
stdint.h synopsis