llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-lldb

Author: Jacob Lalonde (Jlalond)

<details>
<summary>Changes</summary>

In my prior two save core API's, I experimented on how to save stacks with the 
new API. I incorrectly left these in, as the existing `m_thread_by_range_end` 
was the correct choice.

I have removed the no-op collection, and moved to use the proper one. It's 
worth noting this was not caught by testing because we do not verify where the 
items are contained in the minidump. This would require a test being aware of 
how minidumps are structured, or adding a textual tool that we can then scan 
the output of.

---
Full diff: https://github.com/llvm/llvm-project/pull/110579.diff


2 Files Affected:

- (modified) lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.cpp 
(+1-1) 
- (modified) lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.h (-1) 


``````````diff
diff --git a/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.cpp 
b/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.cpp
index 3f1e25f730a184..f6c16b6e3d96ae 100644
--- a/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.cpp
+++ b/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.cpp
@@ -853,7 +853,7 @@ Status MinidumpFileBuilder::AddMemoryList() {
   uint64_t total_size = GetCurrentDataEndOffset();
   auto iterator = all_core_memory_vec.begin();
   while (iterator != all_core_memory_vec.end()) {
-    if (m_saved_stack_ranges.count(iterator->range.start()) > 0) {
+    if (m_thread_by_range_end.count(iterator->range.end()) > 0) {
       // We don't save stacks twice.
       ranges_32.push_back(*iterator);
       total_size +=
diff --git a/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.h 
b/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.h
index d5eac9015ac422..a4240f871c8a2f 100644
--- a/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.h
+++ b/lldb/source/Plugins/ObjectFile/Minidump/MinidumpFileBuilder.h
@@ -172,7 +172,6 @@ class MinidumpFileBuilder {
   // to duplicate it in the exception data.
   std::unordered_map<lldb::tid_t, llvm::minidump::LocationDescriptor>
       m_tid_to_reg_ctx;
-  std::unordered_set<lldb::addr_t> m_saved_stack_ranges;
   lldb::FileUP m_core_file;
   lldb_private::SaveCoreOptions m_save_core_options;
 };

``````````

</details>


https://github.com/llvm/llvm-project/pull/110579
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