--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/MC/ARM/multi-section-mapping.s	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,35 @@
+@ RUN: llvm-mc -triple=armv7-linux-gnueabi -filetype=obj < %s | llvm-objdump -t - | FileCheck %s
+
+        .text
+        add r0, r0, r0
+
+@ .wibble should *not* inherit .text's mapping symbol. It's a completely different section.
+        .section .wibble
+        add r0, r0, r0
+
+@ A section should be able to start with a $t
+        .section .starts_thumb
+        .thumb
+        adds r0, r0, r0
+
+@ A setion should be able to start with a $d
+        .section .starts_data
+        .word 42
+
+@ Changing back to .text should not emit a redundant $a
+        .text
+        .arm
+        add r0, r0, r0
+
+@ With all those constraints, we want:
+@   + .text to have $a at 0 and no others
+@   + .wibble to have $a at 0
+@   + .starts_thumb to have $t at 0
+@   + .starts_data to have $d at 0
+
+@ CHECK: 00000000 .text 00000000 $a
+@ CHECK-NEXT: 00000000 .wibble 00000000 $a
+@ CHECK-NEXT: 00000000 .starts_data 00000000 $d
+@ CHECK-NEXT: 00000000 .starts_thumb 00000000 $t
+@ CHECK-NOT: ${{[adt]}}
+