1 files changed, 12 insertions, 0 deletions
diff --git a/clang/test/CodeGen/catch-implicit-conversions-basics-negatives.c b/clang/test/CodeGen/catch-implicit-conversions-basics-negatives.c
new file mode 100644
index 00000000000..2e060cfcdde
--- /dev/null
+++ b/clang/test/CodeGen/catch-implicit-conversions-basics-negatives.c
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -fsanitize=implicit-unsigned-integer-truncation,implicit-signed-integer-truncation,implicit-integer-sign-change -fsanitize-recover=implicit-unsigned-integer-truncation,implicit-signed-integer-truncation,implicit-integer-sign-change -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_implicit_conversion" --check-prefixes=CHECK
+
+// If we have an enum, it will be promoted to an unsigned integer.
+// But both types are unsigned, and have same bitwidth.
+// So we should not emit any sanitization. Also, for inc/dec we currently assume
+// (assert) that we will only have cases where at least one of the types
+// is signed, which isn't the case here.
+typedef enum { a } b;
+b t0(b c) {
+  c--;
+  return c;
+}