[Lldb-commits] [lldb] [LLDB] ASanLibsanitizers Use `sanitizers_address_on_report` breakpoint (PR #84583)

[Usama Hameed via lldb-commits]

https://github.com/usama54321 updated 
https://github.com/llvm/llvm-project/pull/84583

>From 3b16e506778ce0a869e19b41d13836b4c3cf26ca Mon Sep 17 00:00:00 2001
From: usama <u_ham...@apple.com>
Date: Mon, 11 Mar 2024 11:39:24 -0700
Subject: [PATCH] [LLDB] ASanLibsanitizers Use `sanitizers_address_on_report`
 breakpoint symbol

This patch puts the default breakpoint on the
sanitizers_address_on_report symbol, and uses the old symbol as a
backup if the default case is not found

rdar://123911522
---
 .../InstrumentationRuntimeASanLibsanitizers.cpp       | 11 +++++++++--
 .../Utility/ReportRetriever.cpp                       |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git 
a/lldb/source/Plugins/InstrumentationRuntime/ASanLibsanitizers/InstrumentationRuntimeASanLibsanitizers.cpp
 
b/lldb/source/Plugins/InstrumentationRuntime/ASanLibsanitizers/InstrumentationRuntimeASanLibsanitizers.cpp
index d84cd36d7ce17b..cd91f4a6ff1bc2 100644
--- 
a/lldb/source/Plugins/InstrumentationRuntime/ASanLibsanitizers/InstrumentationRuntimeASanLibsanitizers.cpp
+++ 
b/lldb/source/Plugins/InstrumentationRuntime/ASanLibsanitizers/InstrumentationRuntimeASanLibsanitizers.cpp
@@ -90,9 +90,16 @@ void InstrumentationRuntimeASanLibsanitizers::Activate() {
   if (!process_sp)
     return;
 
+  lldb::ModuleSP module_sp = GetRuntimeModuleSP();
+
   Breakpoint *breakpoint = ReportRetriever::SetupBreakpoint(
-      GetRuntimeModuleSP(), process_sp,
-      ConstString("_Z22raise_sanitizers_error23sanitizer_error_context"));
+      module_sp, process_sp, ConstString("sanitizers_address_on_report"));
+
+  if (!breakpoint) {
+    breakpoint = ReportRetriever::SetupBreakpoint(
+        module_sp, process_sp,
+        ConstString("_Z22raise_sanitizers_error23sanitizer_error_context"));
+  }
 
   if (!breakpoint)
     return;
diff --git 
a/lldb/source/Plugins/InstrumentationRuntime/Utility/ReportRetriever.cpp 
b/lldb/source/Plugins/InstrumentationRuntime/Utility/ReportRetriever.cpp
index ff58c4cababae3..298b63bc716fcd 100644
--- a/lldb/source/Plugins/InstrumentationRuntime/Utility/ReportRetriever.cpp
+++ b/lldb/source/Plugins/InstrumentationRuntime/Utility/ReportRetriever.cpp
@@ -219,6 +219,7 @@ bool ReportRetriever::NotifyBreakpointHit(ProcessSP 
process_sp,
   return true; // Return true to stop the target
 }
 
+// FIXME: Setup the breakpoint using a less fragile SPI. rdar://124399066
 Breakpoint *ReportRetriever::SetupBreakpoint(ModuleSP module_sp,
                                              ProcessSP process_sp,
                                              ConstString symbol_name) {

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