## Test the different error cases in the debug line parsing and how they prevent ## or don't prevent further dumping of section contents. ## Show that a bad length stops parsing of the section. # RUN: llvm-mc -triple x86_64-pc-linux %S/Inputs/debug_line_reserved_length.s -filetype=obj -o %t-reserved.o # RUN: llvm-dwarfdump -debug-line %t-reserved.o 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,FIRST,FATAL,RESERVED # RUN: llvm-dwarfdump -debug-line %t-reserved.o -verbose 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,FIRST,FATAL,RESERVED ## We only produce warnings for malformed tables after the specified unit if ## parsing can continue. # RUN: llvm-dwarfdump -debug-line=0 %t-reserved.o 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,FIRST,NOLATER,RESERVED ## Stop looking for the specified unit, if a fatally-bad prologue is detected. # RUN: llvm-dwarfdump -debug-line=0x4b %t-reserved.o 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,NOFIRST,NOLATER,RESERVED ## Show that non-fatal errors do not prevent parsing the rest of the section. # RUN: llvm-mc -triple x86_64-pc-linux %S/Inputs/debug_line_malformed.s -filetype=obj -o %t-malformed.o # RUN: llvm-dwarfdump -debug-line %t-malformed.o 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,FIRST,NONFATAL,LAST,SOME-ERR,MORE-ERR \ # RUN: --implicit-check-not='debug_line[{{.*}}]' --implicit-check-not='warning:' # RUN: llvm-dwarfdump -debug-line %t-malformed.o -verbose 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,FIRST,VERBOSE,NONFATAL,LAST,SOME-ERR,MORE-ERR \ # RUN: --implicit-check-not='debug_line[{{.*}}]' --implicit-check-not=' DW_LNS' \ # RUN: --implicit-check-not=' DW_LNE' --implicit-check-not='address +=' \ # RUN: --implicit-check-not='warning:' ## We should still produce warnings for malformed tables after the specified unit. # RUN: llvm-dwarfdump -debug-line=0 %t-malformed.o 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,FIRST,NOLATER,SOME-ERR --implicit-check-not='warning:' ## Don't stop looking for the later unit if non-fatal issues are found. # RUN: llvm-dwarfdump -debug-line=0x3ed %t-malformed.o 2>&1 \ # RUN: | FileCheck %s --check-prefixes=HEADER,LAST,SOME-ERR --implicit-check-not='debug_line[{{.*}}]' \ # RUN: --implicit-check-not='warning:' # HEADER: .debug_line contents: # FIRST: debug_line[0x00000000] # VERBOSE: Address Line Column File ISA Discriminator Flags # VERBOSE-NEXT: ------------------ ------ ------ ------ --- ------------- ------------- # VERBOSE-NEXT: DW_LNE_set_address (0x000000000badbeef) # VERBOSE-NEXT: DW_LNE_end_sequence # FIRST: 0x000000000badbeef {{.*}} end_sequence # FIRST-EMPTY: # NOFIRST-NOT: debug_line[0x00000000] # NOFIRST-NOT: 0x000000000badbeef {{.*}} end_sequence # NOLATER-NOT: debug_line[{{.*}}] # NOLATER-NOT: end_sequence ## For fatal issues, the following table(s) should not be dumped: # FATAL: debug_line[0x00000048] # RESERVED-NOT: prologue # RESERVED: warning: parsing line table prologue at offset 0x00000048: unsupported reserved unit length of value 0xfffffffe # RESERVED-NOT: prologue # RESERVED-NOT: Address # FATAL-NOT: debug_line ## For non-fatal issues, the table data should be dumped: ## Version 0 table. # NONFATAL: debug_line[0x00000048] # NONFATAL-NEXT: Line table prologue # NONFATAL-NEXT: total_length: 0x00000002 # NONFATAL-NEXT: format: DWARF32 # NONFATAL-NEXT: version: 0 # NONFATAL-EMPTY: # SOME-ERR-NEXT: warning: parsing line table prologue at offset 0x00000048: unsupported version 0 ## Version 1 table. # NONFATAL: debug_line[0x0000004e] # NONFATAL-NEXT: Line table prologue # NONFATAL-NEXT: total_length: 0x00000002 # NONFATAL-NEXT: format: DWARF32 # NONFATAL-NEXT: version: 1 # NONFATAL-EMPTY: # SOME-ERR-NEXT: warning: parsing line table prologue at offset 0x0000004e: unsupported version 1 ## Malformed directory format with no path component. # NONFATAL: debug_line[0x00000054] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x00000054 found an invalid directory or file table description at 0x00000073 # SOME-ERR-NEXT: warning: failed to parse entry content descriptions because no path was found # NONFATAL-NEXT: Line table prologue # NONFATAL: prologue_length: 0x00000013 # NONFATAL-NOT: include_directories # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0x8877665544332211) # VERBOSE-NEXT: DW_LNE_end_sequence ## Prologue with length shorter than parsed. # NONFATAL: debug_line[0x00000081] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x00000081 found an invalid directory or file table description at 0x000000b9 # SOME-ERR-NEXT: warning: file names table was not null terminated before the end of the prologue # NONFATAL-NEXT: Line table prologue # NONFATAL: file_names[ 1]: # NONFATAL-NEXT: name: "file1" # NONFATAL-NEXT: dir_index: 1 # NONFATAL-NEXT: mod_time: 0x00000002 # NONFATAL-NEXT: length: 0x00000003 # VERBOSE: DW_LNE_set_address (0x1122334455667788) # VERBOSE-NEXT: DW_LNE_end_sequence ## Prologue with length longer than parsed. # NONFATAL: debug_line[0x000000c7] # SOME-ERR-NEXT: warning: unknown data in line table prologue at offset 0x000000c7: parsing ended (at offset 0x00000101) before reaching the prologue end at offset 0x00000102 # NONFATAL-NEXT: Line table prologue # NONFATAL: file_names[ 2]: # NONFATAL-NEXT: name: "file2" # NONFATAL-NEXT: dir_index: 1 # NONFATAL-NEXT: mod_time: 0x00000002 # NONFATAL-NEXT: length: 0x00000003 # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0x1111222233334444) # VERBOSE-NEXT: DW_LNE_end_sequence ## Extended opcode with incorrect length versus expected. # NONFATAL: debug_line[0x00000110] # NONFATAL-NEXT: Line table prologue # NONFATAL: prologue_length: 0x00000030 # VERBOSE: DW_LNE_set_address (0x00000000abbadaba) # VERBOSE-NEXT: DW_LNE_end_sequence # MORE-ERR: warning: unexpected line op length at offset 0x00000157 expected 0x02 found 0x01 # VERBOSE: DW_LNE_set_discriminator (10) # MORE-ERR: warning: unexpected line op length at offset 0x0000015b expected 0x01 found 0x02 # VERBOSE: DW_LNS_set_prologue_end # VERBOSE-NEXT: DW_LNE_set_address (0x00000000babb1e45) # VERBOSE-NEXT: DW_LNE_end_sequence ## No end of sequence. # NONFATAL: debug_line[0x0000016b] # NONFATAL-NEXT: Line table prologue # NONFATAL: prologue_length: 0x00000030 # VERBOSE: DW_LNE_set_address (0x00000000deadfade) # VERBOSE-NEXT: DW_LNS_copy # MORE-ERR: warning: last sequence in debug line table at offset 0x0000016b is not terminated ## Very short prologue length for V5 (ends during parameters). # NONFATAL: debug_line[0x000001b1] # NONFATAL-NEXT: Line table prologue # NONFATAL: standard_opcode_lengths[DW_LNS_set_prologue_end] = 1 # NONFATAL-NEXT: standard_opcode_lengths[DW_LNS_set_epilogue_begin] = 0 # NONFATAL-NEXT: standard_opcode_lengths[DW_LNS_set_isa] = 0 # NONFATAL-EMPTY: # SOME-ERR-NEXT: warning: parsing line table prologue at offset 0x000001b1: unexpected end of data at offset 0x1cd while reading [0x1cd, 0x1ce) ## V5 prologue ends during file table. # NONFATAL-NEXT: debug_line[0x000001db] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x000001db found an invalid directory or file table description at 0x00000206 # SOME-ERR-NEXT: warning: failed to parse entry content descriptors: unable to decode LEB128 at offset 0x00000206: malformed uleb128, extends past end # NONFATAL-NEXT: Line table prologue # NONFATAL: include_directories[ 0] = "/tmp" # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0x00000ab4acadab4a) # VERBOSE-NEXT: DW_LNE_end_sequence ## V5 prologue ends during directory table. # NONFATAL: debug_line[0x00000214] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x00000214 found an invalid directory or file table description at 0x00000236 # SOME-ERR-NEXT: warning: failed to parse directory entry because extracting the form value failed # NONFATAL-NEXT: Line table prologue # NONFATAL-NOT: include_directories # VERBOSE: DW_LNE_set_address (0x4444333322221111) # VERBOSE-NEXT: DW_LNE_end_sequence ## V5 invalid MD5 hash form when there is still data to be read. # NONFATAL: debug_line[0x00000244] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x00000244 found an invalid directory or file table description at 0x00000277 # SOME-ERR-NEXT: warning: failed to parse file entry because extracting the form value failed # NONFATAL-NEXT: Line table prologue # NONFATAL: include_directories[ 0] = "/tmp" # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0x1234123412341234) # VERBOSE-NEXT: DW_LNE_end_sequence ## V5 prologue ends while reading an MD5 hash # NONFATAL: debug_line[0x00000287] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x00000287 found an invalid directory or file table description at 0x000002b2 # SOME-ERR-NEXT: warning: failed to parse entry content descriptors: unable to decode LEB128 at offset 0x000002b2: malformed uleb128, extends past end # NONFATAL-NEXT: Line table prologue # NONFATAL: include_directories[ 0] = "/tmp" # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0x4321432143214321) # VERBOSE-NEXT: DW_LNE_end_sequence ## V5 invalid directory content description has unsupported form. # NONFATAL: debug_line[0x000002c0] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x000002c0 found an invalid directory or file table description at 0x000002e9 # SOME-ERR-NEXT: warning: failed to parse directory entry because skipping the form value failed # NONFATAL-NEXT: Line table prologue # NONFATAL: include_directories[ 0] = "/foo" # NONFATAL-NOT: include_directories # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0xaaaabbbbccccdddd) # VERBOSE-NEXT: DW_LNE_end_sequence ## Opcode base field of value zero. # NONFATAL: debug_line[0x00000306] # SOME-ERR-NEXT: warning: parsing line table prologue at offset 0x00000306 found opcode base of 0. Assuming no standard opcodes # NONFATAL-NEXT: Line table prologue # NONFATAL: include_directories[ 1] = "dir1" # NONFATAL-NEXT: file_names[ 1]: # NONFATAL-NEXT: name: "file1" # NONFATAL-NEXT: dir_index: 1 # NONFATAL-NEXT: mod_time: 0x00000002 # NONFATAL-NEXT: length: 0x00000003 # VERBOSE: DW_LNE_set_address (0xffffeeeeddddcccc) # VERBOSE-NEXT: address += 1, line += 0 # VERBOSE: DW_LNE_end_sequence ## V4 table with unterminated include directory table. # NONFATAL: debug_line[0x00000335] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x00000335 found an invalid directory or file table description at 0x00000356 # SOME-ERR-NEXT: warning: include directories table was not null terminated before the end of the prologue # NONFATAL-NEXT: Line table prologue # NONFATAL: include_directories[ 1] = "dir1" # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0xabcdef0123456789) # VERBOSE-NEXT: DW_LNE_end_sequence ## V4 table with unterminated file name table. # NONFATAL: debug_line[0x00000364] # SOME-ERR-NEXT: warning: parsing line table prologue at 0x00000364 found an invalid directory or file table description at 0x0000038f # SOME-ERR-NEXT: warning: file names table was not null terminated before the end of the prologue # NONFATAL-NEXT: Line table prologue # NONFATAL: file_names[ 1]: # NONFATAL-NEXT: name: "foo.c" # NONFATAL-NEXT: dir_index: 1 # NONFATAL-NEXT: mod_time: 0x00000002 # NONFATAL-NEXT: length: 0x00000003 # NONFATAL-NOT: file_names # VERBOSE: DW_LNE_set_address (0xababcdcdefef0909) # VERBOSE-NEXT: DW_LNE_end_sequence ## Table with extended opcode that overruns table end. # NONFATAL: debug_line[0x0000039d] # NONFATAL-NEXT: Line table prologue # NONFATAL: Address # NONFATAL-NEXT: ------------------ # VERBOSE-NEXT: DW_LNE_set_address (0x00000000feedfeed) # VERBOSE-NEXT: DW_LNS_copy # NONFATAL-NEXT: 0x00000000feedfeed # VERBOSE-NEXT: DW_LNE_set_address ( 00 f0 01 f0 f0 00 01) # MORE-ERR-NEXT: warning: unexpected end of data at offset 0x3ed while reading [0x3e6, 0x3ee) # MORE-ERR-NEXT: warning: last sequence in debug line table at offset 0x0000039d is not terminated # LAST: debug_line[0x000003ed] # VERBOSE: DW_LNE_set_address (0x00000000cafebabe) # VERBOSE-NEXT: DW_LNE_end_sequence