diff --git a/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp b/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
index 1f681bac224..4ef18b4298b 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
@@ -82,10 +82,14 @@ static bool getARMFixupKindMachOInfo(unsigned Kind, unsigned &RelocType,
     Log2Size = llvm::Log2_32(8);
     return true;
 
-    // Handle 24-bit branch kinds.
+    // These fixups are expected to always be resolvable at assembly time and
+    // have no relocations supported.
   case ARM::fixup_arm_ldst_pcrel_12:
   case ARM::fixup_arm_pcrel_10:
   case ARM::fixup_arm_adr_pcrel_12:
+    return false;
+
+    // Handle 24-bit branch kinds.
   case ARM::fixup_arm_condbranch:
   case ARM::fixup_arm_uncondbranch:
   case ARM::fixup_arm_uncondbl:
diff --git a/test/MC/MachO/ARM/bad-darwin-ARM-reloc.s b/test/MC/MachO/ARM/bad-darwin-ARM-reloc.s
new file mode 100644
index 00000000000..7ad91df3ce0
--- /dev/null
+++ b/test/MC/MachO/ARM/bad-darwin-ARM-reloc.s
@@ -0,0 +1,9 @@
+@ RUN: not llvm-mc -n -triple armv7-apple-darwin10 %s -filetype=obj -o - 2> %t.err > %t
+@ RUN: FileCheck --check-prefix=CHECK-ERROR < %t.err %s
+@ rdar://15586725
+.text
+    ldr r3, L___fcommon
+.section myseg, mysect
+L___fcommon: 
+    .word 0
+@ CHECK-ERROR: unsupported relocation on symbol