--- /dev/null
+// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump --dump-section-data | FileCheck %s
+
+// Test that mergeable constants have sh_entsize set.
+
+// 1 byte strings
+ .section .rodata.str1.1,"aMS",@progbits,1
+
+ .type .L.str1,@object # @.str1
+.L.str1:
+ .asciz "tring"
+ .size .L.str1, 6
+
+ .type .L.str2,@object # @.str2
+.L.str2:
+ .asciz "String"
+ .size .L.str2, 7
+
+// 2 byte strings
+ .section .rodata.str2.1,"aMS",@progbits,2
+ .type .L.str3,@object # @.str3
+.L.str3:
+ .asciz "L\000o\000n\000g\000"
+ .size .L.str3, 9
+
+ .type .L.str4,@object # @.str4
+.L.str4:
+ .asciz "o\000n\000g\000"
+ .size .L.str4, 7
+
+ // 8 byte constants
+ .section .rodata.cst8,"aM",@progbits,8
+ .quad 42
+ .quad 42
+
+// CHECK: # Section 4
+// CHECK-NEXT: ('sh_name', 18) # '.rodata.str1.1'
+// CHECK-NEXT: ('sh_type', 1)
+// CHECK-NEXT: ('sh_flags', 50)
+// CHECK-NEXT: ('sh_addr',
+// CHECK-NEXT: ('sh_offset',
+// CHECK-NEXT: ('sh_size', 13)
+// CHECK-NEXT: ('sh_link',
+// CHECK-NEXT: ('sh_info',
+// CHECK-NEXT: ('sh_addralign', 1)
+// CHECK-NEXT: ('sh_entsize', 1)
+
+// CHECK: # Section 5
+// CHECK-NEXT: ('sh_name', 33) # '.rodata.str2.1'
+// CHECK-NEXT: ('sh_type', 1)
+// CHECK-NEXT: ('sh_flags', 50)
+// CHECK-NEXT: ('sh_addr',
+// CHECK-NEXT: ('sh_offset',
+// CHECK-NEXT: ('sh_size', 16)
+// CHECK-NEXT: ('sh_link',
+// CHECK-NEXT: ('sh_info',
+// CHECK-NEXT: ('sh_addralign', 1)
+// CHECK-NEXT: ('sh_entsize', 2)
+
+// CHECK: # Section 6
+// CHECK-NEXT: ('sh_name', 48) # '.rodata.cst8
+// CHECK-NEXT: ('sh_type', 1)
+// CHECK-NEXT: ('sh_flags', 18)
+// CHECK-NEXT: ('sh_addr',
+// CHECK-NEXT: ('sh_offset',
+// CHECK-NEXT: ('sh_size', 16)
+// CHECK-NEXT: ('sh_link',
+// CHECK-NEXT: ('sh_info',
+// CHECK-NEXT: ('sh_addralign', 1)
+// CHECK-NEXT: ('sh_entsize', 8)