Add the testcase from pr23900.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240253 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/pr23900.ll b/test/CodeGen/X86/pr23900.ll
new file mode 100644 (file)
index 0000000..cbc7716
--- /dev/null
+++ b/test/CodeGen/X86/pr23900.ll
@@ -0,0 +1,29 @@
+; RUN: llc -filetype=obj %s -o %t.o
+; RUN: llvm-nm %t.o | FileCheck %s
+
+; Test that it doesn't crash (and produces an object file).
+; This use to pass a symbol with a null name to code that expected a valid
+; C string.
+
+; CHECK:         U __CxxFrameHandler3
+; CHECK:         T f
+; CHECK:         t f.cleanup
+; CHECK:         U g
+; CHECK:         U h
+
+
+target triple = "x86_64-pc-windows-msvc18.0.0"
+define void @f(i32 %x) personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
+  invoke void @h()
+          to label %invoke.cont unwind label %lpad
+invoke.cont:
+  ret void
+lpad:
+ landingpad { i8*, i32 }
+          cleanup
+  call void @g(i32 %x)
+  ret void
+}
+declare void @h()
+declare i32 @__CxxFrameHandler3(...)
+declare void @g(i32 %x)