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<rdar://problem/10507811>

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Avoid a crash for the new DW_OP_stack_value and DW_OP_implicit_value opcodes
that was due to an assertion.

llvm-svn: 145564
This commit is contained in:
Greg Clayton
2011-12-01 04:06:15 +00:00
parent bc5c524b71
commit eaeaf6f906
1 changed files with 10 additions and 1 deletions
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11
lldb/source/Expression/DWARFExpression.cpp
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@@ -905,6 +905,7 @@ GetOpcodeDataSize (const DataExtractor &data, const uint32_t data_offset, const
case DW_OP_push_object_address: // 0x97 DWARF3
case DW_OP_form_tls_address: // 0x9b DWARF3
case DW_OP_call_frame_cfa: // 0x9c DWARF3
case DW_OP_stack_value: // 0x9f DWARF4
return 0;
// Opcodes with a single 1 byte arguments
@@ -976,12 +977,20 @@ GetOpcodeDataSize (const DataExtractor &data, const uint32_t data_offset, const
data.Skip_LEB128(&offset);
return offset - data_offset;
// All opcodes that have a 2 ULEB (signed or unsigned) arguments
// All opcodes that have a 2 ULEB (signed or unsigned) arguments
case DW_OP_bregx: // 0x92 2 ULEB128 register followed by SLEB128 offset
case DW_OP_bit_piece: // 0x9d ULEB128 bit size, ULEB128 bit offset (DWARF3);
data.Skip_LEB128(&offset);
data.Skip_LEB128(&offset);
return offset - data_offset;
case DW_OP_implicit_value: // 0x9e ULEB128 size followed by block of that size (DWARF4)
{
uint64_t block_len = data.Skip_LEB128(&offset);
offset += block_len;
return offset - data_offset;
}
default:
{
Host::SetCrashDescriptionWithFormat ("Unhandled DW_OP_XXX opcode: %d, add support for it.", op);