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