llvm/test/tools/llvm-locstats/locstats-bytes-overflow.yaml

   1 # RUN: yaml2obj %s -o %t.o
   2 # RUN: %llvm-locstats %t.o 2>&1 | FileCheck %s
   3 # RUN: rm %t.o
   4
   5 ## Check that we are covering the situation when a stat field overflows.
   6 ##
   7 ## The yaml represents this DWARF:
   8 ##
   9 ## DW_TAG_compile_unit
  10 ##   DW_AT_low_pc (0x0000000000000000)
  11 ##   DW_AT_high_pc  (0x000000000000000b)
  12 ##
  13 ##   DW_TAG_subprogram
  14 ##     DW_AT_low_pc (0x0000000000000000)
  15 ##     DW_AT_high_pc  (0xffffffffffffffff)
  16 ##       DW_TAG_variable
  17 ##         DW_AT_location (0x00000023:
  18 ##            [0x0000000000000003, 0x0000000000000005): DW_OP_reg2 RCX)
  19 ##   DW_TAG_subprogram
  20 ##     DW_AT_low_pc    (0x0000000000000000)
  21 ##     DW_AT_high_pc   (0xffffffffffffffff)
  22 ##     DW_TAG_variable
  23 ##       DW_AT_location        (0x00000023:
  24 ##             [0x0000000000000003, 0x0000000000000005): DW_OP_reg2 RCX)
  25
  26 # CHECK: warning: "sum_all_variables(#bytes in parent scope)" field overflowed.
  27 # CHECK: PC ranges covered: tainted
  28
  29 --- !ELF
  30 FileHeader:
  31   Class:   ELFCLASS[[BITS=64]]
  32   Data:    ELFDATA2LSB
  33   Type:    ET_EXEC
  34   Machine: EM_X86_64
  35 Sections:
  36   - Name:         .debug_loc
  37     Type:         SHT_PROGBITS
  38     AddressAlign: 0x01
  39     Content:      '00000000000000000600000000000000010055000000000000000000000000000000000300000000000000050000000000000001005200000000000000000000000000000000'
  40   - Name:         .debug_ranges
  41     Type:         SHT_PROGBITS
  42     AddressAlign: 0x01
  43     Content:      '000000000000000003000000000000000500000000000000080000000000000000000000000000000000000000000000'
  44 DWARF:
  45   debug_abbrev:
  46     - Table:
  47       - Code:     1
  48         Tag:      DW_TAG_compile_unit
  49         Children: DW_CHILDREN_yes
  50         Attributes:
  51           - Attribute: DW_AT_low_pc
  52             Form:      DW_FORM_addr
  53           - Attribute: DW_AT_high_pc
  54             Form:      DW_FORM_data8
  55       - Code:     2
  56         Tag:      DW_TAG_subprogram
  57         Children: DW_CHILDREN_yes
  58         Attributes:
  59           - Attribute: DW_AT_low_pc
  60             Form:      DW_FORM_addr
  61           - Attribute: DW_AT_high_pc
  62             Form:      DW_FORM_data8
  63       - Code:     3
  64         Tag:      DW_TAG_variable
  65         Children: DW_CHILDREN_no
  66         Attributes:
  67           - Attribute: DW_AT_location
  68             Form:      DW_FORM_sec_offset
  69   debug_info:
  70     - Version:    4
  71       AbbrOffset: 0x00
  72       Entries:
  73         - AbbrCode: 1 ## DW_TAG_compile_unit
  74           Values:
  75             - Value: 0x00 ## DW_AT_low_pc
  76             - Value: 0x0b ## DW_AT_high_pc
  77         - AbbrCode: 2 ## DW_TAG_subprogram
  78           Values:
  79             - Value: 0x00 ## DW_AT_low_pc
  80             - Value: 0xFFFFFFFFFFFFFFFF ## DW_AT_high_pc
  81         - AbbrCode: 3 ## DW_TAG_variable
  82           Values:
  83             - Value: 0x23 ## DW_AT_sec_offset
  84         - AbbrCode: 0 ## NULL
  85         - AbbrCode: 2 ## DW_TAG_subprogram
  86           Values:
  87             - Value: 0x00 ## DW_AT_low_pc
  88             - Value: 0xFFFFFFFFFFFFFFFF ## DW_AT_high_pc
  89         - AbbrCode: 3 ## DW_TAG_variable
  90           Values:
  91             - Value: 0x23 ## DW_AT_sec_offset
  92         - AbbrCode: 0 ## NULL
  93         - AbbrCode: 0 ## NULL