PR target/65523

	* tree-chkp.c (chkp_build_returned_bound): Ignore
	ERF_RETURNS_ARG calls if they have fewer than needed arguments.

	* gcc.target/i386/pr65523.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@221606 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2df46f5..97c0afd 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-03-23  Jakub Jelinek  <jakub@redhat.com>
+
+       PR target/65523
+       * tree-chkp.c (chkp_build_returned_bound): Ignore
+       ERF_RETURNS_ARG calls if they have fewer than needed arguments.
+
 2015-03-23  Oleg Endo  <olegendo@gcc.gnu.org>
 
        PR target/65505

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b612abc..b9f8dc2 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2015-03-23  Jakub Jelinek  <jakub@redhat.com>
 
+       PR target/65523
+       * gcc.target/i386/pr65523.c: New test.
+
        PR ipa/65475
        * g++.dg/lto/pr65475_0.C: Use dg-lto-options instead of
        dg-options.

diff --git a/gcc/testsuite/gcc.target/i386/pr65523.c b/gcc/testsuite/gcc.target/i386/pr65523.c
new file mode 100644 (file)
index 0000000..5a25f50
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr65523.c
@@ -0,0 +1,11 @@
+/* PR target/65523 */
+/* { dg-do compile } */
+/* { dg-options "-fcheck-pointer-bounds -mmpx" } */
+
+void *memmove ();
+
+void *
+bar ()
+{
+  return memmove ();
+}

diff --git a/gcc/tree-chkp.c b/gcc/tree-chkp.c
index d2df4ba..977c460 100644 (file)
--- a/gcc/tree-chkp.c
+++ b/gcc/tree-chkp.c
@@ -2153,6 +2153,7 @@ chkp_build_returned_bound (gcall *call)
   tree bounds;
   gimple stmt;
   tree fndecl = gimple_call_fndecl (call);
+  unsigned int retflags;
 
   /* To avoid fixing alloca expands in targets we handle
      it separately.  */
@@ -2196,12 +2197,11 @@ chkp_build_returned_bound (gcall *call)
     }
   /* Do not use retbnd when returned bounds are equal to some
      of passed bounds.  */
-  else if (gimple_call_return_flags (call) & ERF_RETURNS_ARG)
+  else if (((retflags = gimple_call_return_flags (call)) & ERF_RETURNS_ARG)
+          && (retflags & ERF_RETURN_ARG_MASK) < gimple_call_num_args (call))
     {
       gimple_stmt_iterator iter = gsi_for_stmt (call);
-      unsigned int retarg = 0, argno;
-      if (gimple_call_return_flags (call) & ERF_RETURNS_ARG)
-       retarg = gimple_call_return_flags (call) & ERF_RETURN_ARG_MASK;
+      unsigned int retarg = retflags & ERF_RETURN_ARG_MASK, argno;
       if (gimple_call_with_bounds_p (call))
        {
          for (argno = 0; argno < gimple_call_num_args (call); argno++)