gcc/gcc41-pr29059.patch
Jakub Jelinek 7d4d713ef5 4.1.1-23
2006-09-17 10:53:40 +00:00

77 lines
2.0 KiB
Diff

2006-09-16 Andrew Pinski <pinskia@physics.uc.edu>
PR tree-opt/29059
* tree-ssa-propagate.c (set_rhs): Reject MODIFY_EXPR right
away for the expr argument.
* gcc.c-torture/compile/strcpy-1.c: New test.
* gcc.c-torture/compile/strcpy-2.c: New test.
* gcc.c-torture/compile/memcpy-1.c: New test.
* gcc.c-torture/compile/memcpy-2.c: New test.
--- gcc/tree-ssa-propagate.c (revision 116996)
+++ gcc/tree-ssa-propagate.c (revision 116997)
@@ -588,7 +588,8 @@ set_rhs (tree *stmt_p, tree expr)
&& !is_gimple_val (TREE_OPERAND (TREE_OPERAND (expr, 0), 1)))
return false;
}
- else if (code == COMPOUND_EXPR)
+ else if (code == COMPOUND_EXPR
+ || code == MODIFY_EXPR)
return false;
switch (TREE_CODE (stmt))
--- gcc/testsuite/gcc.c-torture/compile/strcpy-1.c (revision 0)
+++ gcc/testsuite/gcc.c-torture/compile/strcpy-1.c (revision 116997)
@@ -0,0 +1,15 @@
+
+
+typedef struct
+{
+ char str[20];
+}STACK;
+STACK stack[15];
+int level;
+rezero ()
+{
+ level = 0;
+ __builtin_strcpy (stack[level].str, "");
+}
+
+
--- gcc/testsuite/gcc.c-torture/compile/strcpy-2.c (revision 0)
+++ gcc/testsuite/gcc.c-torture/compile/strcpy-2.c (revision 116997)
@@ -0,0 +1,7 @@
+char wrkstr_un[270];
+extern void
+LoadUserAlph (char *s)
+{
+ s = &wrkstr_un[0];
+ __builtin_strcpy (s, "");
+};
--- gcc/testsuite/gcc.c-torture/compile/memcpy-1.c (revision 0)
+++ gcc/testsuite/gcc.c-torture/compile/memcpy-1.c (revision 116997)
@@ -0,0 +1,9 @@
+static const char OggFLAC__MAPPING_VERSION_MAJOR = 1;
+void f(void)
+{
+ char synthetic_first_packet_body[10];
+ char *b = &synthetic_first_packet_body[4];
+ __builtin_memcpy (b, &OggFLAC__MAPPING_VERSION_MAJOR, (1u));
+}
+
+
--- gcc/testsuite/gcc.c-torture/compile/memcpy-2.c (revision 0)
+++ gcc/testsuite/gcc.c-torture/compile/memcpy-2.c (revision 116997)
@@ -0,0 +1,10 @@
+static const char OggFLAC__MAPPING_VERSION_MAJOR = 1;
+void f(void)
+{
+ char synthetic_first_packet_body[10];
+ char *b = synthetic_first_packet_body;
+ b+=4u;
+ __builtin_memcpy (b, &OggFLAC__MAPPING_VERSION_MAJOR, (1u));
+}
+
+