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authornil <niljo@airmail.cc>2025-01-14 20:16:17 +0100
committernil <niljo@airmail.cc>2025-01-14 20:16:17 +0100
commit9cd3e10283ea0c6cc997afc5353c0f314b3aa092 (patch)
tree4aa0ae912633a0f3e7a7d1405469bb7009cef1ba /.ccls-cache/@@home@niliara@configs/@usr@lib@clang@18@include@stdarg.h
parent23a62d70129db30027ba620fc798a666c198ba35 (diff)
changing host repositorymain
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+/*===---- stdarg.h - Variable argument handling ----------------------------===
+ *
+ * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ * See https://llvm.org/LICENSE.txt for license information.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+/*
+ * This header is designed to be included multiple times. If any of the __need_
+ * macros are defined, then only that subset of interfaces are provided. This
+ * can be useful for POSIX headers that need to not expose all of stdarg.h, but
+ * need to use some of its interfaces. Otherwise this header provides all of
+ * the expected interfaces.
+ *
+ * When clang modules are enabled, this header is a textual header. It ignores
+ * its header guard so that multiple submodules can export its interfaces.
+ * Take module SM with submodules A and B, whose headers both include stdarg.h
+ * When SM.A builds, __STDARG_H will be defined. When SM.B builds, the
+ * definition from SM.A will leak when building without local submodule
+ * visibility. stdarg.h wouldn't include any of its implementation headers, and
+ * SM.B wouldn't import any of the stdarg modules, and SM.B's `export *`
+ * wouldn't export any stdarg interfaces as expected. However, since stdarg.h
+ * ignores its header guard when building with modules, it all works as
+ * expected.
+ *
+ * When clang modules are not enabled, the header guards can function in the
+ * normal simple fashion.
+ */
+#if !defined(__STDARG_H) || __has_feature(modules) || \
+ defined(__need___va_list) || defined(__need_va_list) || \
+ defined(__need_va_arg) || defined(__need___va_copy) || \
+ defined(__need_va_copy)
+
+#if !defined(__need___va_list) && !defined(__need_va_list) && \
+ !defined(__need_va_arg) && !defined(__need___va_copy) && \
+ !defined(__need_va_copy)
+#define __STDARG_H
+#define __need___va_list
+#define __need_va_list
+#define __need_va_arg
+#define __need___va_copy
+/* GCC always defines __va_copy, but does not define va_copy unless in c99 mode
+ * or -ansi is not specified, since it was not part of C90.
+ */
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
+ (defined(__cplusplus) && __cplusplus >= 201103L) || \
+ !defined(__STRICT_ANSI__)
+#define __need_va_copy
+#endif
+#endif
+
+#ifdef __need___va_list
+#include <__stdarg___gnuc_va_list.h>
+#undef __need___va_list
+#endif /* defined(__need___va_list) */
+
+#ifdef __need_va_list
+#include <__stdarg_va_list.h>
+#undef __need_va_list
+#endif /* defined(__need_va_list) */
+
+#ifdef __need_va_arg
+#include <__stdarg_va_arg.h>
+#undef __need_va_arg
+#endif /* defined(__need_va_arg) */
+
+#ifdef __need___va_copy
+#include <__stdarg___va_copy.h>
+#undef __need___va_copy
+#endif /* defined(__need___va_copy) */
+
+#ifdef __need_va_copy
+#include <__stdarg_va_copy.h>
+#undef __need_va_copy
+#endif /* defined(__need_va_copy) */
+
+#endif