* builtin-types.def (BT_FN_STRING_CONST_STRING): New builtin type.

	(BT_FN_PTR_SIZE_SIZE): Likewise.
	* builtins.def (BUILT_IN_MALLOC, BUILT_IN_CALLOC, BUILT_IN_STRDUP):
	New built-in functions for malloc, calloc and strdup respectively.
	* calls.c (special_function_p): No need to handle malloc-like
	functions any longer.  ECF_MALLOC is set via built-in attributes.

	* c-decl.c (duplicate_decls): Preserve pure and malloc attributes.
	* cp/decl.c (duplicate_decls): Preserve pure and malloc attributes.
	* f/com.c (duplicate_decls): Preserve pure and malloc attributes.

	* doc/extend.texi: Document these new built-in functions.

	* gcc.dg/builtins-13.c: New test case.
	* gcc.dg/builtins-14.c: New test case.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@65560 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 61 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/builtins-13.c b/gcc/testsuite/gcc.dg/builtins-13.c
new file mode 100644
index 00000000000..befcd3447ad
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtins-13.c
@@ -0,0 +1,61 @@
+/* Copyright (C) 2003  Free Software Foundation.
+
+   Verify that the malloc-like __builtin_ allocation functions are
+   correctly aliased by the compiler.
+
+   Written by Roger Sayle, 12th April 2003.  */
+
+/* { dg-do link } */
+
+typedef __SIZE_TYPE__ size_t;
+
+extern void abort (void);
+extern void *malloc (size_t);
+extern void *calloc (size_t,size_t);
+
+extern void link_error (void);
+
+static int x;
+
+void test1(void)
+{
+  int *ptr1, *ptr2;
+
+  ptr1 = &x;
+  ptr2 = (int*) malloc (sizeof (int));
+
+  *ptr1 = 12;
+  *ptr2 = 8;
+
+  if (*ptr1 != 12)
+    link_error();
+}
+
+void test2(void)
+{
+  int *ptr1, *ptr2;
+
+  ptr1 = &x;
+  ptr2 = (int*) calloc (1, sizeof (int));
+
+  *ptr1 = 12;
+  *ptr2 = 8;
+
+  if (*ptr1 != 12)
+    link_error ();
+}
+
+int main()
+{
+  test1 ();
+  test2 ();
+  return 0;
+}
+
+#ifndef __OPTIMIZE__
+void link_error (void)
+{
+  abort ();
+}
+#endif
+