[DWARF] Corrected behavior for when no .apple_names section is present in the object.

The verifier should not output any message in such a case.
Added test case with no .apple_name section in the file to verify new functionality.
Made existing test case more specific.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305597 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/DebugInfo/DWARF/DWARFVerifier.cpp b/lib/DebugInfo/DWARF/DWARFVerifier.cpp
index a6240fb..41907e5 100644 (file)
--- a/lib/DebugInfo/DWARF/DWARFVerifier.cpp
+++ b/lib/DebugInfo/DWARF/DWARFVerifier.cpp
@@ -279,7 +279,6 @@ bool DWARFVerifier::handleDebugLine() {
 
 bool DWARFVerifier::handleAppleNames() {
   NumAppleNamesErrors = 0;
-  OS << "Verifying .apple_names...\n";
 
   DataExtractor AppleNamesSection(DCtx.getAppleNamesSection().Data,
                                   DCtx.isLittleEndian(), 0);
@@ -288,10 +287,11 @@ bool DWARFVerifier::handleAppleNames() {
                                    DCtx.getAppleNamesSection().Relocs);
 
   if (!AppleNames.extract()) {
-    OS << "error: cannot extract .apple_names accelerator table\n";
-    return false;
+    return true;
   }
 
+  OS << "Verifying .apple_names...\n";
+
   // Verify that all buckets have a valid hash index or are empty
   uint32_t NumBuckets = AppleNames.getNumBuckets();
   uint32_t NumHashes = AppleNames.getNumHashes();

diff --git a/test/tools/llvm-dwarfdump/X86/apple_names_verify_buckets.s b/test/tools/llvm-dwarfdump/X86/apple_names_verify_buckets.s
index 903153c..7b61a94 100644 (file)
--- a/test/tools/llvm-dwarfdump/X86/apple_names_verify_buckets.s
+++ b/test/tools/llvm-dwarfdump/X86/apple_names_verify_buckets.s
@@ -3,7 +3,7 @@
 # RUN: | FileCheck %s
 
 # CHECK: Verifying .apple_names...
-# CHECK-NEXT: error:
+# CHECK-NEXT: error: Bucket[0] has invalid hash index: [-2]
 
 # This test is meant to verify that the -verify option 
 # in llvm-dwarfdump, correctly identifies

diff --git a/test/tools/llvm-dwarfdump/X86/no_apple_names_verify_buckets.s b/test/tools/llvm-dwarfdump/X86/no_apple_names_verify_buckets.s
new file mode 100644 (file)
index 0000000..472ff71
--- /dev/null
+++ b/test/tools/llvm-dwarfdump/X86/no_apple_names_verify_buckets.s
@@ -0,0 +1,174 @@
+# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o - \
+# RUN: | not llvm-dwarfdump -verify - \
+# RUN: | FileCheck %s
+
+# CHECK-NOT: Verifying .apple_names...
+
+# This test is meant to verify that the -verify option 
+# in llvm-dwarfdump doesn't produce any .apple_names related
+# output when there's no such section int he object.
+# The test was manually modified to exclude the 
+# .apple_names section from the apple_names_verify_buckets.s
+# test file in the same directory.
+
+  .section  __TEXT,__text,regular,pure_instructions
+  .file 1 "basic.c"
+  .comm _i,4,2                  ## @i
+  .section  __DWARF,__debug_str,regular,debug
+Linfo_string:
+  .asciz  "basic.c"               ## string offset=42
+  .asciz  "i"                     ## string offset=84
+  .asciz  "int"                   ## string offset=86
+  .section  __DWARF,__debug_loc,regular,debug
+Lsection_debug_loc:
+  .section  __DWARF,__debug_abbrev,regular,debug
+Lsection_abbrev:
+  .byte 1                       ## Abbreviation Code
+  .byte 17                      ## DW_TAG_compile_unit
+  .byte 1                       ## DW_CHILDREN_yes
+  .byte 37                      ## DW_AT_producer
+  .byte 14                      ## DW_FORM_strp
+  .byte 19                      ## DW_AT_language
+  .byte 5                       ## DW_FORM_data2
+  .byte 3                       ## DW_AT_name
+  .byte 14                      ## DW_FORM_strp
+  .byte 16                      ## DW_AT_stmt_list
+  .byte 23                      ## DW_FORM_sec_offset
+  .byte 27                      ## DW_AT_comp_dir
+  .byte 14                      ## DW_FORM_strp
+  .byte 0                       ## EOM(1)
+  .byte 0                       ## EOM(2)
+  .byte 2                       ## Abbreviation Code
+  .byte 52                      ## DW_TAG_variable
+  .byte 0                       ## DW_CHILDREN_no
+  .byte 3                       ## DW_AT_name
+  .byte 14                      ## DW_FORM_strp
+  .byte 73                      ## DW_AT_type
+  .byte 19                      ## DW_FORM_ref4
+  .byte 63                      ## DW_AT_external
+  .byte 25                      ## DW_FORM_flag_present
+  .byte 58                      ## DW_AT_decl_file
+  .byte 11                      ## DW_FORM_data1
+  .byte 59                      ## DW_AT_decl_line
+  .byte 11                      ## DW_FORM_data1
+  .byte 2                       ## DW_AT_location
+  .byte 24                      ## DW_FORM_exprloc
+  .byte 0                       ## EOM(1)
+  .byte 0                       ## EOM(2)
+  .byte 3                       ## Abbreviation Code
+  .byte 36                      ## DW_TAG_base_type
+  .byte 0                       ## DW_CHILDREN_no
+  .byte 3                       ## DW_AT_name
+  .byte 14                      ## DW_FORM_strp
+  .byte 62                      ## DW_AT_encoding
+  .byte 11                      ## DW_FORM_data1
+  .byte 11                      ## DW_AT_byte_size
+  .byte 11                      ## DW_FORM_data1
+  .byte 0                       ## EOM(1)
+  .byte 0                       ## EOM(2)
+  .byte 0                       ## EOM(3)
+  .section  __DWARF,__debug_info,regular,debug
+Lsection_info:
+Lcu_begin0:
+  .long 55                      ## Length of Unit
+  .short  4                       ## DWARF version number
+Lset0 = Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section
+  .long Lset0
+  .byte 8                       ## Address Size (in bytes)
+  .byte 1                       ## Abbrev [1] 0xb:0x30 DW_TAG_compile_unit
+  .long 0                       ## DW_AT_producer
+  .short  12                      ## DW_AT_language
+  .long 42                      ## DW_AT_name
+Lset1 = Lline_table_start0-Lsection_line ## DW_AT_stmt_list
+  .long Lset1
+  .long 50                      ## DW_AT_comp_dir
+  .byte 2                       ## Abbrev [2] 0x1e:0x15 DW_TAG_variable
+  .long 84                      ## DW_AT_name
+  .long 51                      ## DW_AT_type
+                                        ## DW_AT_external
+  .byte 1                       ## DW_AT_decl_file
+  .byte 1                       ## DW_AT_decl_line
+  .byte 9                       ## DW_AT_location
+  .byte 3
+  .quad _i
+  .byte 3                       ## Abbrev [3] 0x33:0x7 DW_TAG_base_type
+  .long 86                      ## DW_AT_name
+  .byte 5                       ## DW_AT_encoding
+  .byte 4                       ## DW_AT_byte_size
+  .byte 0                       ## End Of Children Mark
+  .section  __DWARF,__debug_ranges,regular,debug
+Ldebug_range:
+  .section  __DWARF,__debug_macinfo,regular,debug
+Ldebug_macinfo:
+Lcu_macro_begin0:
+  .byte 0                       ## End Of Macro List Mark
+  .section  __DWARF,__apple_objc,regular,debug
+Lobjc_begin:
+  .long 1212240712              ## Header Magic
+  .short  1                       ## Header Version
+  .short  0                       ## Header Hash Function
+  .long 1                       ## Header Bucket Count
+  .long 0                       ## Header Hash Count
+  .long 12                      ## Header Data Length
+  .long 0                       ## HeaderData Die Offset Base
+  .long 1                       ## HeaderData Atom Count
+  .short  1                       ## DW_ATOM_die_offset
+  .short  6                       ## DW_FORM_data4
+  .long -1                      ## Bucket 0
+  .section  __DWARF,__apple_namespac,regular,debug
+Lnamespac_begin:
+  .long 1212240712              ## Header Magic
+  .short  1                       ## Header Version
+  .short  0                       ## Header Hash Function
+  .long 1                       ## Header Bucket Count
+  .long 0                       ## Header Hash Count
+  .long 12                      ## Header Data Length
+  .long 0                       ## HeaderData Die Offset Base
+  .long 1                       ## HeaderData Atom Count
+  .short  1                       ## DW_ATOM_die_offset
+  .short  6                       ## DW_FORM_data4
+  .long -1                      ## Bucket 0
+  .section  __DWARF,__apple_types,regular,debug
+Ltypes_begin:
+  .long 1212240712              ## Header Magic
+  .short  1                       ## Header Version
+  .short  0                       ## Header Hash Function
+  .long 1                       ## Header Bucket Count
+  .long 1                       ## Header Hash Count
+  .long 20                      ## Header Data Length
+  .long 0                       ## HeaderData Die Offset Base
+  .long 3                       ## HeaderData Atom Count
+  .short  1                       ## DW_ATOM_die_offset
+  .short  6                       ## DW_FORM_data4
+  .short  3                       ## DW_ATOM_die_tag
+  .short  5                       ## DW_FORM_data2
+  .short  4                       ## DW_ATOM_type_flags
+  .short  11                      ## DW_FORM_data1
+  .long 0                       ## Bucket 0
+  .long 193495088               ## Hash in Bucket 0
+  .long Ltypes0-Ltypes_begin    ## Offset in Bucket 0
+Ltypes0:
+  .long 86                      ## int
+  .long 1                       ## Num DIEs
+  .long 51
+  .short  36
+  .byte 0
+  .long 0
+  .section  __DWARF,__apple_exttypes,regular,debug
+Lexttypes_begin:
+  .long 1212240712              ## Header Magic
+  .short  1                       ## Header Version
+  .short  0                       ## Header Hash Function
+  .long 1                       ## Header Bucket Count
+  .long 0                       ## Header Hash Count
+  .long 12                      ## Header Data Length
+  .long 0                       ## HeaderData Die Offset Base
+  .long 1                       ## HeaderData Atom Count
+  .short  7                       ## DW_ATOM_ext_types
+  .short  6                       ## DW_FORM_data4
+  .long -1                      ## Bucket 0
+
+.subsections_via_symbols
+  .section  __DWARF,__debug_line,regular,debug
+Lsection_line:
+Lline_table_start0: