[PATCH] Another non-prototype builtin issue (PR middle-end/55890)

[PATCH] Another non-prototype builtin issue (PR middle-end/55890)

[Jakub Jelinek]

Hi!

evaluate_stmt can be crashed similarly to what you've fixed today.
Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

2013-01-07  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/55890
	* tree-ssa-ccp.c (evaluate_stmt): Use gimple_call_builtin_p.

	* gcc.dg/torture/pr55890-3.c: New test.

--- gcc/tree-ssa-ccp.c.jj	2012-11-19 14:41:17.000000000 +0100
+++ gcc/tree-ssa-ccp.c	2013-01-07 18:53:39.952854381 +0100
@@ -1546,7 +1546,6 @@ evaluate_stmt (gimple stmt)
       && !is_constant)
     {
       enum gimple_code code = gimple_code (stmt);
-      tree fndecl;
       val.lattice_val = VARYING;
       val.value = NULL_TREE;
       val.mask = double_int_minus_one;
@@ -1593,10 +1592,9 @@ evaluate_stmt (gimple stmt)
 	      || POINTER_TYPE_P (TREE_TYPE (rhs1)))
 	    val = bit_value_binop (code, TREE_TYPE (rhs1), rhs1, rhs2);
 	}
-      else if (code == GIMPLE_CALL
-	       && (fndecl = gimple_call_fndecl (stmt))
-	       && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL)
+      else if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
 	{
+	  tree fndecl = gimple_call_fndecl (stmt);
 	  switch (DECL_FUNCTION_CODE (fndecl))
 	    {
 	    case BUILT_IN_MALLOC:
--- gcc/testsuite/gcc.dg/torture/pr55890-3.c.jj	2013-01-07 18:51:27.415614201 +0100
+++ gcc/testsuite/gcc.dg/torture/pr55890-3.c	2013-01-07 18:51:22.864640151 +0100
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+
+void *memmove ();
+
+void *
+bar ()
+{
+  return memmove ();
+}

	Jakub

Re: [PATCH] Another non-prototype builtin issue (PR middle-end/55890)

[Richard Biener]

Jakub Jelinek <jakub@redhat.com> wrote:

>Hi!
>
>evaluate_stmt can be crashed similarly to what you've fixed today.
>Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

Ok.

Thanks,
Richard.

>2013-01-07  Jakub Jelinek  <jakub@redhat.com>
>
>	PR middle-end/55890
>	* tree-ssa-ccp.c (evaluate_stmt): Use gimple_call_builtin_p.
>
>	* gcc.dg/torture/pr55890-3.c: New test.
>
>--- gcc/tree-ssa-ccp.c.jj	2012-11-19 14:41:17.000000000 +0100
>+++ gcc/tree-ssa-ccp.c	2013-01-07 18:53:39.952854381 +0100
>@@ -1546,7 +1546,6 @@ evaluate_stmt (gimple stmt)
>       && !is_constant)
>     {
>       enum gimple_code code = gimple_code (stmt);
>-      tree fndecl;
>       val.lattice_val = VARYING;
>       val.value = NULL_TREE;
>       val.mask = double_int_minus_one;
>@@ -1593,10 +1592,9 @@ evaluate_stmt (gimple stmt)
> 	      || POINTER_TYPE_P (TREE_TYPE (rhs1)))
> 	    val = bit_value_binop (code, TREE_TYPE (rhs1), rhs1, rhs2);
> 	}
>-      else if (code == GIMPLE_CALL
>-	       && (fndecl = gimple_call_fndecl (stmt))
>-	       && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL)
>+      else if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
> 	{
>+	  tree fndecl = gimple_call_fndecl (stmt);
> 	  switch (DECL_FUNCTION_CODE (fndecl))
> 	    {
> 	    case BUILT_IN_MALLOC:
>--- gcc/testsuite/gcc.dg/torture/pr55890-3.c.jj	2013-01-07
>18:51:27.415614201 +0100
>+++ gcc/testsuite/gcc.dg/torture/pr55890-3.c	2013-01-07
>18:51:22.864640151 +0100
>@@ -0,0 +1,9 @@
>+/* { dg-do compile } */
>+
>+void *memmove ();
>+
>+void *
>+bar ()
>+{
>+  return memmove ();
>+}
>
>	Jakub