forked from OSchip/llvm-project
eca07c592a
Clang recently improved its DWARF support for C VLA types. The DWARF now looks like this: 0x00000051: DW_TAG_variable [4] DW_AT_location( fbreg -32 ) DW_AT_name( "__vla_expr" ) DW_AT_type( {0x000000d3} ( long unsigned int ) ) DW_AT_artificial( true ) ... 0x000000da: DW_TAG_array_type [10] * DW_AT_type( {0x000000cc} ( int ) ) 0x000000df: DW_TAG_subrange_type [11] DW_AT_type( {0x000000e9} ( __ARRAY_SIZE_TYPE__ ) ) DW_AT_count( {0x00000051} ) Without this patch LLDB will naively interpret the DIE offset 0x51 as the static size of the array, which is clearly wrong. This patch extends ValueObject::GetNumChildren to query the dynamic properties of incomplete array types. See the testcase for an example: 4 int foo(int a) { 5 int vla[a]; 6 for (int i = 0; i < a; ++i) 7 vla[i] = i; 8 -> 9 pause(); // break here 10 return vla[a-1]; 11 } (lldb) fr v vla (int []) vla = ([0] = 0, [1] = 1, [2] = 2, [3] = 3) (lldb) quit rdar://problem/21814005 Differential Revision: https://reviews.llvm.org/D53530 llvm-svn: 346165 |
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.. | ||
cmake | ||
docs | ||
examples | ||
include/lldb | ||
lit | ||
lldb.xcodeproj | ||
lldb.xcworkspace | ||
packages/Python/lldbsuite | ||
resources | ||
scripts | ||
source | ||
test | ||
third_party/Python/module | ||
tools | ||
unittests | ||
utils | ||
www | ||
.arcconfig | ||
.clang-format | ||
.gitignore | ||
CMakeLists.txt | ||
CODE_OWNERS.txt | ||
INSTALL.txt | ||
LICENSE.TXT | ||
use_lldb_suite_root.py |