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-rw-r--r--gcc/testsuite/gcc.dg/tree-ssa/tailcall-15.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/tailcall-15.c b/gcc/testsuite/gcc.dg/tree-ssa/tailcall-15.c
new file mode 100644
index 0000000..bf24fd8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/tailcall-15.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-tailc-details" } */
+
+/* PR tree-optimization/67797 */
+
+/* We should not get a tail call here since the
+ types don't match and we don't know how the argument
+ truncation will work. */
+
+unsigned char my_func(int n)
+{
+ __builtin_memset((void*)0, 0, n);
+ return 0;
+}
+
+/* { dg-final { scan-tree-dump-not "Found tail call" "tailc"} } */