1# This test verifies that an empty range list in the .debug_ranges section
2# doesn't crash dsymutil. As clang does not produce this kind of debug
3# info anymore, we used this hand-crafted assembly file to produce a testcase
4# Compile with:
5#        llvm-mc -triple x86_64-apple-darwin -filetype=obj -o 1.o empty_range.o
6
7# RUN: dsymutil -f -y %p/dummy-debug-map.map -oso-prepend-path %p/../Inputs/empty_range -o - | llvm-dwarfdump -debug-info - | FileCheck %s
8
9        .section	__TEXT,__text,regular,pure_instructions
10	.macosx_version_min 10, 11
11	.globl	__Z3foov
12	.align	4, 0x90
13__Z3foov:                               ## @_Z3foov
14Lfunc_begin0:
15	pushq	%rbp
16	movq	%rsp, %rbp
17	popq	%rbp
18	retq
19Lfunc_end0:
20	.section	__DWARF,__debug_abbrev,regular,debug
21Lsection_abbrev:
22	.byte	1                       ## Abbreviation Code
23	.byte	17                      ## DW_TAG_compile_unit
24	.byte	1                       ## DW_CHILDREN_yes
25	.byte	0                       ## EOM(1)
26	.byte	0                       ## EOM(2)
27	.byte	2                       ## Abbreviation Code
28	.byte	46                      ## DW_TAG_subprogram
29	.byte	0                       ## DW_CHILDREN_no
30	.byte	17                      ## DW_AT_low_pc
31	.byte	1                       ## DW_FORM_addr
32        .byte   0x55                    ## DW_AT_ranges
33        .byte   6                       ## DW_FORM_data4
34	.byte	0                       ## EOM(1)
35	.byte	0                       ## EOM(2)
36	.byte	0                       ## EOM(3)
37	.section	__DWARF,__debug_info,regular,debug
38Lsection_info:
39	.long	22                      ## Length of Unit
40	.short	2                       ## DWARF version number
41	.long	0                       ## Offset Into Abbrev. Section
42	.byte	8                       ## Address Size (in bytes)
43	.byte	1                       ## Abbrev [1]  DW_TAG_compile_unit
44	.byte	2                       ## Abbrev [2] DW_TAG_subprogram
45	.quad	Lfunc_begin0            ## DW_AT_low_pc
46        .long   0                       ## DW_AT_ranges (pointing at an empty entry)
47	.byte	0                       ## End Of Children Mark
48	.section	__DWARF,__debug_ranges,regular,debug
49Ldebug_range:
50        .long 0
51        .long 0
52
53# CHECK:  DW_TAG_compile_unit
54# CHECK:    DW_TAG_subprogram
55# CHECK-NEXT:      DW_AT_low_pc{{.*}}(0x0000000000010000)
56# CHECK-NEXT:      DW_AT_ranges{{.*}}(0x00000000)
57
58# There was a bug that would use the currently active object file when a
59# debug map object isn't found. Check that we only linked one file.
60# CHECK-NOT: DW_TAG_compile_unit
61
62