diff options
| author | Emmmer <yjhdandan@163.com> | 2022-08-16 15:35:38 +0800 |
|---|---|---|
| committer | Emmmer <yjhdandan@163.com> | 2022-08-16 23:41:00 +0800 |
| commit | 95e2949a5352aea0182ba5295bf9ba46080c261e (patch) | |
| tree | 6e0fc45cf5566ae8d75ae8d350135e3f031ab775 /lldb/source/Plugins/Process/Utility/NativeProcessSoftwareSingleStep.cpp | |
| parent | 1638ad1ebfa818a454aad35e52a0912aba6172e6 (diff) | |
[LLDB] Fix possible nullptr exception
Some architectures do not have a flag register (like riscv).
In this case, we should set it to `baton.m_register_values.end()` to avoid nullptr exception.
Reviewed By: DavidSpickett
Differential Revision: https://reviews.llvm.org/D131945
Diffstat (limited to 'lldb/source/Plugins/Process/Utility/NativeProcessSoftwareSingleStep.cpp')
| -rw-r--r-- | lldb/source/Plugins/Process/Utility/NativeProcessSoftwareSingleStep.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lldb/source/Plugins/Process/Utility/NativeProcessSoftwareSingleStep.cpp b/lldb/source/Plugins/Process/Utility/NativeProcessSoftwareSingleStep.cpp index ee5295bf6565..f9520cf4cfb7 100644 --- a/lldb/source/Plugins/Process/Utility/NativeProcessSoftwareSingleStep.cpp +++ b/lldb/source/Plugins/Process/Utility/NativeProcessSoftwareSingleStep.cpp @@ -128,8 +128,10 @@ Status NativeProcessSoftwareSingleStep::SetupSoftwareSingleStepping( auto pc_it = baton.m_register_values.find(reg_info_pc->kinds[eRegisterKindDWARF]); - auto flags_it = - baton.m_register_values.find(reg_info_flags->kinds[eRegisterKindDWARF]); + auto flags_it = reg_info_flags == nullptr + ? baton.m_register_values.end() + : baton.m_register_values.find( + reg_info_flags->kinds[eRegisterKindDWARF]); lldb::addr_t next_pc; lldb::addr_t next_flags; |