PR lto/69254

	* sanitizer.def: Add BEGIN_SANITIZER_BUILTINS and
	END_SANITIZER_BUILTINS markers using DEF_BUILTIN_STUB.
	* asan.c (DEF_BUILTIN_STUB): Temporarily define.
	* tree-streamer-in.c: Include asan.h.
	(streamer_get_builtin_tree): For builtins in sanitizer
	range call initialize_sanitizer_builtins and retry.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@232891 138bc75d-0d04-0410-961f-82ee72b054a4

4 files changed, 35 insertions, 6 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 60322afb7a6..197306031a7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2016-01-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR lto/69254
+	* sanitizer.def: Add BEGIN_SANITIZER_BUILTINS and
+	END_SANITIZER_BUILTINS markers using DEF_BUILTIN_STUB.
+	* asan.c (DEF_BUILTIN_STUB): Temporarily define.
+	* tree-streamer-in.c: Include asan.h.
+	(streamer_get_builtin_tree): For builtins in sanitizer
+	range call initialize_sanitizer_builtins and retry.
+
 2016-01-27  Ian Lance Taylor  <iant@google.com>
 
 	* common.opt (fkeep-gc-roots-live): New undocumented option.
diff --git a/gcc/asan.c b/gcc/asan.c
index 2f9f92fa676..1c266492fbe 100644
--- a/gcc/asan.c
+++ b/gcc/asan.c
@@ -2370,6 +2370,8 @@ initialize_sanitizer_builtins (void)
   /* ECF_COLD missing */ ATTR_CONST_NORETURN_NOTHROW_LEAF_LIST
 #undef ATTR_PURE_NOTHROW_LEAF_LIST
 #define ATTR_PURE_NOTHROW_LEAF_LIST ECF_PURE | ATTR_NOTHROW_LEAF_LIST
+#undef DEF_BUILTIN_STUB
+#define DEF_BUILTIN_STUB(ENUM, NAME)
 #undef DEF_SANITIZER_BUILTIN
 #define DEF_SANITIZER_BUILTIN(ENUM, NAME, TYPE, ATTRS) \
   decl = add_builtin_function ("__builtin_" NAME, TYPE, ENUM,		\
@@ -2389,6 +2391,7 @@ initialize_sanitizer_builtins (void)
 			   ATTR_PURE_NOTHROW_LEAF_LIST)
 
 #undef DEF_SANITIZER_BUILTIN
+#undef DEF_BUILTIN_STUB
 }
 
 /* Called via htab_traverse.  Count number of emitted
diff --git a/gcc/sanitizer.def b/gcc/sanitizer.def
index 3a71801cad8..303c1e46df4 100644
--- a/gcc/sanitizer.def
+++ b/gcc/sanitizer.def
@@ -20,12 +20,16 @@ along with GCC; see the file COPYING3.  If not see
 
 /* Before including this file, you should define a macro:
 
+     DEF_BUILTIN_STUB(ENUM, NAME)
      DEF_SANITIZER_BUILTIN (ENUM, NAME, TYPE, ATTRS)
 
    See builtins.def for details.
    The builtins are created by the C-family of FEs in c-family/c-common.c,
    for other FEs by asan.c.  */
 
+/* This has to come before all the sanitizer builtins.  */
+DEF_BUILTIN_STUB(BEGIN_SANITIZER_BUILTINS, (const char *)0)
+
 /* Address Sanitizer */
 DEF_SANITIZER_BUILTIN(BUILT_IN_ASAN_INIT, "__asan_init",
 		      BT_FN_VOID, ATTR_NOTHROW_LEAF_LIST)
@@ -515,3 +519,6 @@ DEF_SANITIZER_BUILTIN(BUILT_IN_UBSAN_HANDLE_DYNAMIC_TYPE_CACHE_MISS_ABORT,
 DEF_SANITIZER_BUILTIN(BUILT_IN_SANITIZER_COV_TRACE_PC,
 		      "__sanitizer_cov_trace_pc",
 		      BT_FN_VOID, ATTR_NOTHROW_LEAF_LIST)
+
+/* This has to come after all the sanitizer builtins.  */
+DEF_BUILTIN_STUB(END_SANITIZER_BUILTINS, (const char *)0)
diff --git a/gcc/tree-streamer-in.c b/gcc/tree-streamer-in.c
index 3c8558e67ae..91c72eb293e 100644
--- a/gcc/tree-streamer-in.c
+++ b/gcc/tree-streamer-in.c
@@ -32,6 +32,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "builtins.h"
 #include "ipa-chkp.h"
 #include "gomp-constants.h"
+#include "asan.h"
 
 
 /* Read a STRING_CST from the string table in DATA_IN using input
@@ -1136,13 +1137,21 @@ streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
 	fatal_error (input_location,
 		     "machine independent builtin code out of range");
       result = builtin_decl_explicit (fcode);
-      if (!result
-	  && fcode > BEGIN_CHKP_BUILTINS
-	  && fcode < END_CHKP_BUILTINS)
+      if (!result)
 	{
-	  fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
-	  result = builtin_decl_explicit (fcode);
-	  result = chkp_maybe_clone_builtin_fndecl (result);
+	  if (fcode > BEGIN_CHKP_BUILTINS && fcode < END_CHKP_BUILTINS)
+	    {
+	      fcode = (enum built_in_function)
+		      (fcode - BEGIN_CHKP_BUILTINS - 1);
+	      result = builtin_decl_explicit (fcode);
+	      result = chkp_maybe_clone_builtin_fndecl (result);
+	    }
+	  else if (fcode > BEGIN_SANITIZER_BUILTINS
+		   && fcode < END_SANITIZER_BUILTINS)
+	    {
+	      initialize_sanitizer_builtins ();
+	      result = builtin_decl_explicit (fcode);
+	    }
 	}
       gcc_assert (result);
     }