Adding upstream version 4.99.4.upstream/4.99.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/diag-control.h b/diag-control.h
new file mode 100644
index 0000000..3eb6bca
--- /dev/null
+++ b/diag-control.h
@@ -0,0 +1,186 @@
+/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
+/*
+ * Copyright (c) 1993, 1994, 1995, 1996, 1997
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the Computer Systems
+ *	Engineering Group at Lawrence Berkeley Laboratory.
+ * 4. Neither the name of the University nor of the Laboratory may be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _diag_control_h
+#define _diag_control_h
+
+#include "compiler-tests.h"
+
+#ifndef _MSC_VER
+  /*
+   * Clang and GCC both support this way of putting pragmas into #defines.
+   * We don't use it unless we have a compiler that supports it; the
+   * warning-suppressing pragmas differ between Clang and GCC, so we test
+   * for both of those separately.
+   */
+  #define DIAG_DO_PRAGMA(x) _Pragma (#x)
+#endif
+
+/*
+ * XL C 12.1 and 13.1 for AIX require no attention in this department.
+ * XL C 16.1 defines both __GNUC__ and __clang__, so has to be tested first.
+ */
+#if ND_IS_AT_LEAST_XL_C_VERSION(16,1)
+  /*
+   * See respective Clang note below.
+   */
+  #define DIAG_OFF_ASSIGN_ENUM \
+    DIAG_DO_PRAGMA(clang diagnostic push) \
+    DIAG_DO_PRAGMA(clang diagnostic ignored "-Wassign-enum")
+  #define DIAG_ON_ASSIGN_ENUM \
+    DIAG_DO_PRAGMA(clang diagnostic pop)
+
+  #define DIAG_OFF_CAST_QUAL
+  #define DIAG_ON_CAST_QUAL
+  #define DIAG_OFF_DEPRECATION
+  #define DIAG_ON_DEPRECATION
+/*
+ * The current clang compilers also define __GNUC__ and __GNUC_MINOR__
+ * thus we need to test the clang case before the GCC one
+ */
+#elif ND_IS_AT_LEAST_CLANG_VERSION(2,8)
+  /*
+   * Clang complains if you OR together multiple enum values of a
+   * given enum type and them pass it as an argument of that enum
+   * type.  Some libcap-ng routines use enums to define bit flags;
+   * we want to squelch the warnings that produces.
+   */
+  #define DIAG_OFF_ASSIGN_ENUM \
+    DIAG_DO_PRAGMA(clang diagnostic push) \
+    DIAG_DO_PRAGMA(clang diagnostic ignored "-Wassign-enum")
+  #define DIAG_ON_ASSIGN_ENUM \
+    DIAG_DO_PRAGMA(clang diagnostic pop)
+
+  /*
+   * It also legitimately complains about some code in the BSD
+   * getopt_long() - that code explicitly and deliberately
+   * violates the contract by permuting the argument vector
+   * (declared as char const *argv[], meaning "I won't change
+   * the vector by changing any of its elements), as do the
+   * GNU and Solaris getopt_long().  This is documented in the
+   * man pages for all versions; it can be suppressed by setting
+   * the environment variable POSIXLY_CORRECT or by putting a "+"
+   * at the beginning of the option string.
+   *
+   * We suppress the warning.
+   */
+  #define DIAG_OFF_CAST_QUAL \
+    DIAG_DO_PRAGMA(clang diagnostic push) \
+    DIAG_DO_PRAGMA(clang diagnostic ignored "-Wcast-qual")
+  #define DIAG_ON_CAST_QUAL \
+    DIAG_DO_PRAGMA(clang diagnostic pop)
+
+  /*
+   * Suppress deprecation warnings.
+   */
+  #define DIAG_OFF_DEPRECATION \
+    DIAG_DO_PRAGMA(clang diagnostic push) \
+    DIAG_DO_PRAGMA(clang diagnostic ignored "-Wdeprecated-declarations")
+  #define DIAG_ON_DEPRECATION \
+    DIAG_DO_PRAGMA(clang diagnostic pop)
+
+  /*
+   * Clang supports the generic C11 extension even if run with the -std=gnu99
+   * flag, which leads FreeBSD <sys/cdefs.h> to use the extension, which
+   * results in Clang emitting a -Wc11-extensions warning. The warning is not
+   * documented in the user manual, but it happens with Clang 10.0.1 on
+   * FreeBSD 12.2, so let's use that as a reference.
+   */
+  #if ND_IS_AT_LEAST_CLANG_VERSION(10,0)
+    #define DIAG_OFF_C11_EXTENSIONS \
+      DIAG_DO_PRAGMA(clang diagnostic push) \
+      DIAG_DO_PRAGMA(clang diagnostic ignored "-Wc11-extensions")
+    #define DIAG_ON_C11_EXTENSIONS \
+      DIAG_DO_PRAGMA(clang diagnostic pop)
+  #endif
+#elif ND_IS_AT_LEAST_GNUC_VERSION(4,2)
+  /* GCC apparently doesn't complain about ORing enums together. */
+  #define DIAG_OFF_ASSIGN_ENUM
+  #define DIAG_ON_ASSIGN_ENUM
+
+  /*
+   * It does, however, complain about casting away constness in
+   * missing/getopt_long.c.
+   */
+  #define DIAG_OFF_CAST_QUAL \
+    DIAG_DO_PRAGMA(GCC diagnostic push) \
+    DIAG_DO_PRAGMA(GCC diagnostic ignored "-Wcast-qual")
+  #define DIAG_ON_CAST_QUAL \
+    DIAG_DO_PRAGMA(GCC diagnostic pop)
+
+  /*
+   * Suppress deprecation warnings.
+   */
+  #define DIAG_OFF_DEPRECATION \
+    DIAG_DO_PRAGMA(GCC diagnostic push) \
+    DIAG_DO_PRAGMA(GCC diagnostic ignored "-Wdeprecated-declarations")
+  #define DIAG_ON_DEPRECATION \
+    DIAG_DO_PRAGMA(GCC diagnostic pop)
+  /*
+   * GCC supports -Wc99-c11-compat since version 5.1.0, but the warning does
+   * not trigger for now, so let's just leave it be.
+   */
+#else
+  #define DIAG_OFF_ASSIGN_ENUM
+  #define DIAG_ON_ASSIGN_ENUM
+  #define DIAG_OFF_CAST_QUAL
+  #define DIAG_ON_CAST_QUAL
+  #define DIAG_OFF_DEPRECATION
+  #define DIAG_ON_DEPRECATION
+#endif
+
+#ifndef DIAG_OFF_C11_EXTENSIONS
+#define DIAG_OFF_C11_EXTENSIONS
+#endif
+#ifndef DIAG_ON_C11_EXTENSIONS
+#define DIAG_ON_C11_EXTENSIONS
+#endif
+
+/*
+ * GCC needs this on AIX for longjmp().
+ */
+#if ND_IS_AT_LEAST_GNUC_VERSION(5,1)
+  /*
+   * Beware that the effect of this builtin is more than just squelching the
+   * warning! GCC trusts it enough for the process to segfault if the control
+   * flow reaches the builtin (an infinite empty loop in the same context would
+   * squelch the warning and ruin the process too, albeit in a different way).
+   * So please remember to use this very carefully.
+   */
+  #define ND_UNREACHABLE __builtin_unreachable();
+#else
+  #define ND_UNREACHABLE
+#endif
+
+#endif /* _diag_control_h */