From bf389fd5185143847b1d91aed423e79c322dba51 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 5 Feb 2016 16:01:42 +0200
Subject: [PATCH] Initial work to make ODB compatible with GCC 6

[Upstream: 511dcf67322ad87fb32f97d1cf7725c129e83898]
Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
---
 odb/cxx-lexer.cxx          |  4 ++++
 odb/gcc-fwd.hxx            | 23 ++++++++++++++++++++++-
 odb/gcc.hxx                | 10 ++++++++++
 odb/include.cxx            | 31 +++++++++++++++++++++----------
 odb/parser.cxx             |  8 ++++----
 odb/plugin.cxx             | 29 +++++++++++++++++++++++++++--
 odb/semantics/elements.cxx |  4 ++--
 7 files changed, 90 insertions(+), 19 deletions(-)

diff --git a/odb/cxx-lexer.cxx b/odb/cxx-lexer.cxx
index 7029c7e..64df296 100644
--- a/odb/cxx-lexer.cxx
+++ b/odb/cxx-lexer.cxx
@@ -135,8 +135,12 @@ cpp_error_callback (
 #if BUILDING_GCC_MAJOR > 4 || BUILDING_GCC_MAJOR == 4 && BUILDING_GCC_MINOR > 5
   int /*reason*/, // Added in GCC 4.6.0.
 #endif
+#if BUILDING_GCC_MAJOR <= 5
   location_t,
   unsigned int,
+#else
+  rich_location*,
+#endif
   char const* msg,
   va_list *ap)
 {
diff --git a/odb/gcc-fwd.hxx b/odb/gcc-fwd.hxx
index a120f05..618b106 100644
--- a/odb/gcc-fwd.hxx
+++ b/odb/gcc-fwd.hxx
@@ -7,6 +7,24 @@
 
 #include <bversion.h>
 
+#if BUILDING_GCC_MAJOR >= 6
+
+// If we include <system.h> here, it pulls in all kinds of GCC trouble that
+// "poisons" standard C/C++ declarations; see safe-ctype.h. So instead we
+// are going to "exclude" safe-ctype.h. To compensate, however, we will
+// include it first thing in gcc.hxx.
+//
+#  include <config.h>
+#  define SAFE_CTYPE_H
+#  include <system.h>
+#  undef SAFE_CTYPE_H
+#  include <coretypes.h>
+
+typedef unsigned int source_location; // <line-map.h>
+typedef source_location location_t;   // <input.h>
+
+#else // GCC < 6
+
 #if BUILDING_GCC_MAJOR > 4 || BUILDING_GCC_MAJOR == 4 && BUILDING_GCC_MINOR > 8
 #  include <limits.h> // CHAR_BIT
 #  include <config.h>
@@ -33,6 +51,9 @@ extern "C"
 
 typedef unsigned int source_location; // <line-map.h>
 typedef source_location location_t;   // <input.h>
-}
+
+} // extern "C"
+
+#endif
 
 #endif // ODB_GCC_FWD_HXX
diff --git a/odb/gcc.hxx b/odb/gcc.hxx
index c953047..858d685 100644
--- a/odb/gcc.hxx
+++ b/odb/gcc.hxx
@@ -7,6 +7,10 @@
 
 #include <odb/gcc-fwd.hxx>
 
+#if BUILDING_GCC_MAJOR >= 6
+#  include <safe-ctype.h> // See gcc-fwd.hxx.
+#endif
+
 // GCC header includes to get the plugin and parse tree declarations.
 // The order is important and doesn't follow any kind of logic.
 //
@@ -145,4 +149,10 @@ gcc_tree_code_name (gcc_tree_code_type tc) {return tree_code_name[tc];}
 #define DECL_CHAIN(x) TREE_CHAIN(x)
 #endif
 
+// In GCC 6, ANON_AGGRNAME_P became anon_aggrname_p().
+//
+#if BUILDING_GCC_MAJOR < 6
+#  define anon_aggrname_p(X) ANON_AGGRNAME_P(X)
+#endif
+
 #endif // ODB_GCC_HXX
diff --git a/odb/include.cxx b/odb/include.cxx
index c397993..08c93ce 100644
--- a/odb/include.cxx
+++ b/odb/include.cxx
@@ -30,9 +30,18 @@ namespace
     path path_;
   };
 
+#if BUILDING_GCC_MAJOR >= 6
+  typedef line_map_ordinary line_map_type;
+#else
+  typedef line_map line_map_type;
+# ifndef linemap_check_ordinary
+#   define linemap_check_ordinary(X) (X)
+# endif
+#endif
+
   struct includes
   {
-    typedef std::map<line_map const*, include_directive> map_type;
+    typedef std::map<line_map_type const*, include_directive> map_type;
     bool trailing; // Included at the beginning or at the end of the main file.
     map_type map;
   };
@@ -144,7 +153,9 @@ namespace
       //
       if (l > BUILTINS_LOCATION)
       {
-        line_map const* lm (linemap_lookup (line_table, l));
+        line_map_type const* lm (
+          linemap_check_ordinary (
+            linemap_lookup (line_table, l)));
 
         if (lm != 0 && !MAIN_FILE_P (lm))
         {
@@ -537,20 +548,20 @@ namespace
     //
 #if BUILDING_GCC_MAJOR == 4 && BUILDING_GCC_MINOR <= 6
     size_t used (line_table->used);
-    line_map const* maps (line_table->maps);
+    line_map_type const* maps (line_table->maps);
 #else
     size_t used (line_table->info_ordinary.used);
-    line_map const* maps (line_table->info_ordinary.maps);
+    line_map_type const* maps (line_table->info_ordinary.maps);
 #endif
 
     for (size_t i (0); i < used; ++i)
     {
-      line_map const* m (maps + i);
+      line_map_type const* m (maps + i);
 
       if (MAIN_FILE_P (m) || m->reason != LC_ENTER)
         continue;
 
-      line_map const* ifm (INCLUDED_FROM (line_table, m));
+      line_map_type const* ifm (INCLUDED_FROM (line_table, m));
 
 #if BUILDING_GCC_MAJOR == 4 && BUILDING_GCC_MINOR <= 6
       path f (m->to_file);
@@ -580,7 +591,7 @@ namespace
       for (includes::iterator j (i->second.begin ());
            j != i->second.end (); ++j)
       {
-        line_map const* lm (j->first);
+        line_map_type const* lm (j->first);
         cerr << '\t' << lm->to_file << ":" << LAST_SOURCE_LINE (lm) << endl;
       }
       */
@@ -589,13 +600,13 @@ namespace
       // it is preferred over all others. Use the first one if there are
       // several.
       //
-      line_map const* main_lm (0);
+      line_map_type const* main_lm (0);
       include_directive* main_inc (0);
 
       for (includes::map_type::iterator j (i->second.map.begin ());
            j != i->second.map.end (); ++j)
       {
-        line_map const* lm (j->first);
+        line_map_type const* lm (j->first);
 
         if (MAIN_FILE_P (lm))
         {
@@ -636,7 +647,7 @@ namespace
       for (includes::map_type::iterator j (i->second.map.begin ());
            j != i->second.map.end (); ++j)
       {
-        line_map const* lm (j->first);
+        line_map_type const* lm (j->first);
 
 #if BUILDING_GCC_MAJOR == 4 && BUILDING_GCC_MINOR <= 6
         string f (lm->to_file);
diff --git a/odb/parser.cxx b/odb/parser.cxx
index a8e6a6a..feda9d4 100644
--- a/odb/parser.cxx
+++ b/odb/parser.cxx
@@ -1044,14 +1044,14 @@ emit_type_decl (tree decl)
     // says that in typedef struct {} S; S becomes struct's
     // name.
     //
-    if (ANON_AGGRNAME_P (decl_name))
+    if (anon_aggrname_p (decl_name))
     {
       tree d (TYPE_NAME (t));
 
       if (d != NULL_TREE &&
           !DECL_ARTIFICIAL (d) &&
           DECL_NAME (d) != NULL_TREE &&
-          !ANON_AGGRNAME_P (DECL_NAME (d)))
+          !anon_aggrname_p (DECL_NAME (d)))
       {
         decl = d;
         decl_name = DECL_NAME (decl);
@@ -1668,7 +1668,7 @@ create_type (tree t,
             ts << "start anon/stub " << gcc_tree_code_name(tc) << " at "
                << file << ":" << line << endl;
 
-          if (d == NULL_TREE || ANON_AGGRNAME_P (DECL_NAME (d)))
+          if (d == NULL_TREE || anon_aggrname_p (DECL_NAME (d)))
           {
             if (tc == RECORD_TYPE)
               r = &emit_class<class_> (t, file, line, clmn);
@@ -1765,7 +1765,7 @@ create_type (tree t,
         ts << "start anon/stub " << gcc_tree_code_name(tc) << " at "
            << file << ":" << line << endl;
 
-      if (d == NULL_TREE || ANON_AGGRNAME_P (DECL_NAME (d)))
+      if (d == NULL_TREE || anon_aggrname_p (DECL_NAME (d)))
       {
         r = &emit_enum (t, access, file, line, clmn);
       }
diff --git a/odb/plugin.cxx b/odb/plugin.cxx
index 51f0cb1..779faed 100644
--- a/odb/plugin.cxx
+++ b/odb/plugin.cxx
@@ -45,14 +45,28 @@ path file_;    // File being compiled.
 paths inputs_; // List of input files in at-once mode or just file_.
 
 bool (*cpp_error_prev) (
-  cpp_reader*, int, int, location_t, unsigned int, const char*, va_list*);
+  cpp_reader*,
+  int,
+  int,
+#if BUILDING_GCC_MAJOR >= 6
+  rich_location*,
+#else
+  location_t,
+  unsigned int,
+#endif
+  const char*,
+  va_list*);
 
 static bool
 cpp_error_filter (cpp_reader* r,
                   int level,
                   int reason,
+#if BUILDING_GCC_MAJOR >= 6
+                  rich_location* l,
+#else
                   location_t l,
                   unsigned int column_override,
+#endif
                   const char* msg,
                   va_list* ap)
 {
@@ -66,7 +80,18 @@ cpp_error_filter (cpp_reader* r,
   if (strstr (msg, "#pragma once") != 0)
     return true;
 
-  return cpp_error_prev (r, level, reason, l, column_override, msg, ap);
+  return cpp_error_prev (
+    r,
+    level,
+    reason,
+#if BUILDING_GCC_MAJOR >= 6
+    l,
+#else
+    l,
+    column_override,
+#endif
+    msg,
+    ap);
 }
 
 // A prefix of the _cpp_file struct. This struct is not part of the
diff --git a/odb/semantics/elements.cxx b/odb/semantics/elements.cxx
index 21e3260..399d5e9 100644
--- a/odb/semantics/elements.cxx
+++ b/odb/semantics/elements.cxx
@@ -59,7 +59,7 @@ namespace semantics
       if (tree decl = TYPE_NAME (n))
         name = DECL_NAME (decl);
 
-      return name != 0 && ANON_AGGRNAME_P (name);
+      return name != 0 && anon_aggrname_p (name);
     }
 
     return true;
@@ -108,7 +108,7 @@ namespace semantics
       if (tree decl = TYPE_NAME (type))
       {
         name = DECL_NAME (decl);
-        if (name != 0 && ANON_AGGRNAME_P (name))
+        if (name != 0 && anon_aggrname_p (name))
           return true;
 
         tree s (CP_DECL_CONTEXT (decl));
-- 
2.25.0