When mangling a negative number, remember that negating it does not

always yield a positive number.  Just print the negated result as an
unsigned number.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162163 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 0 deletions

diff --git a/test/CodeGenCXX/mangle-template.cpp b/test/CodeGenCXX/mangle-template.cpp
index 05c3a5851e..488f6f3bb1 100644
--- a/test/CodeGenCXX/mangle-template.cpp
+++ b/test/CodeGenCXX/mangle-template.cpp
@@ -170,3 +170,15 @@ namespace test12 {
     test<const int&, n>();
   }
 }
+
+// rdar://problem/12072531
+// Test the boundary condition of minimal signed integers.
+namespace test13 {
+  template <char c> char returnChar() { return c; }
+  template char returnChar<-128>();
+  // CHECK: @_ZN6test1310returnCharILcn128EEEcv()
+
+  template <short s> short returnShort() { return s; }
+  template short returnShort<-32768>();
+  // CHECK: @_ZN6test1311returnShortILsn32768EEEsv()
+}