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diff --git a/test/MC/COFF/linkonce-invalid.s b/test/MC/COFF/linkonce-invalid.s
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+// Test invalid use of the .linkonce directive.
+//
+// RUN: not llvm-mc -triple i386-pc-win32 -filetype=obj %s 2>&1 | FileCheck %s
+
+.section non_comdat
+
+.section comdat
+.linkonce discard
+
+.section assoc
+.linkonce associative comdat
+
+
+.section invalid
+
+// CHECK: error: unrecognized COMDAT type 'unknown'
+.linkonce unknown
+
+// CHECK: error: unexpected token in directive
+.linkonce discard foo
+
+// CHECK: error: expected associated section name
+.linkonce associative
+
+// CHECK: error: cannot associate unknown section 'unknown'
+.linkonce associative unknown
+
+// CHECK: error: cannot associate a section with itself
+.linkonce associative invalid
+
+// CHECK: error: associated section must be a COMDAT section
+.linkonce associative non_comdat
+
+// CHECK: error: associated section cannot be itself associative
+.linkonce associative assoc
+
+// CHECK: error: section 'multi' is already linkonce
+.section multi
+.linkonce discard
+.linkonce same_size