diff options
4 files changed, 45 insertions, 23 deletions
diff --git a/lldb/include/lldb/Core/Address.h b/lldb/include/lldb/Core/Address.h index 617aaefe91c..26924218172 100644 --- a/lldb/include/lldb/Core/Address.h +++ b/lldb/include/lldb/Core/Address.h @@ -525,11 +525,11 @@ public: bool CalculateSymbolContextLineEntry(LineEntry &line_entry) const; //------------------------------------------------------------------ - // Returns true if the section should be valid, but isn't because the shared - // pointer to the section can't be reconstructed from a weak pointer that - // contains a valid weak reference to a section. Returns false if the section - // weak pointer has no reference to a section, or if the section is still - // valid + // Returns true if the m_section_wp once had a reference to a valid section + // shared pointer, but no longer does. This can happen if we have an address + // from a module that gets unloaded and deleted. This function should only be + // called if GetSection() returns an empty shared pointer and you want to + // know if this address used to have a valid section. //------------------------------------------------------------------ bool SectionWasDeleted() const; @@ -539,15 +539,6 @@ protected: //------------------------------------------------------------------ lldb::SectionWP m_section_wp; ///< The section for the address, can be NULL. lldb::addr_t m_offset; ///< Offset into section if \a m_section_wp is valid... - - //------------------------------------------------------------------ - // Returns true if the m_section_wp once had a reference to a valid section - // shared pointer, but no longer does. This can happen if we have an address - // from a module that gets unloaded and deleted. This function should only be - // called if GetSection() returns an empty shared pointer and you want to - // know if this address used to have a valid section. - //------------------------------------------------------------------ - bool SectionWasDeletedPrivate() const; }; //---------------------------------------------------------------------- diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/breakpoint/address_breakpoints/TestAddressBreakpoints.py b/lldb/packages/Python/lldbsuite/test/functionalities/breakpoint/address_breakpoints/TestAddressBreakpoints.py index 46191d85296..5d778023748 100644 --- a/lldb/packages/Python/lldbsuite/test/functionalities/breakpoint/address_breakpoints/TestAddressBreakpoints.py +++ b/lldb/packages/Python/lldbsuite/test/functionalities/breakpoint/address_breakpoints/TestAddressBreakpoints.py @@ -97,3 +97,40 @@ class AddressBreakpointTestCase(TestBase): # The hit count for the breakpoint should now be 2. self.assertTrue(breakpoint.GetHitCount() == 2) + + + + def test_address_breakpoint_set_before_launch(self): + """Test that an address bp set before the process is launched works correctly.""" + self.build() + + exe = self.getBuildArtifact("a.out") + + # Create a target by the debugger. + target = self.dbg.CreateTarget(exe) + self.assertTrue(target, VALID_TARGET) + + # get the address of the symbol "main" + sc_list = target.FindSymbols("main", lldb.eSymbolTypeCode) + symbol = sc_list.GetContextAtIndex(0).GetSymbol() + address = symbol.GetStartAddress().GetFileAddress() + + # BreakpointCreateBySBAddress will resolve the address, causing this + # test to always pass, so use runCmd + self.runCmd("break set -a " + str(address)) + + # Disable ASLR. This will allow us to actually test (on platforms that support this flag) + # that the breakpoint was able to track the module. + + launch_info = lldb.SBLaunchInfo(None) + flags = launch_info.GetLaunchFlags() + flags &= ~lldb.eLaunchFlagDisableASLR + launch_info.SetLaunchFlags(flags) + + error = lldb.SBError() + + process = target.Launch(launch_info, error) + self.assertTrue(process, PROCESS_IS_VALID) + self.expect("process status", STOPPED_DUE_TO_BREAKPOINT, + substrs=["stop reason = breakpoint 1.1"]) + diff --git a/lldb/source/Breakpoint/Breakpoint.cpp b/lldb/source/Breakpoint/Breakpoint.cpp index 1dc029654bf..bdeda4f06f4 100644 --- a/lldb/source/Breakpoint/Breakpoint.cpp +++ b/lldb/source/Breakpoint/Breakpoint.cpp @@ -555,7 +555,7 @@ void Breakpoint::ModulesChanged(ModuleList &module_list, bool load, // address that we haven't resolved to a section yet. So we'll have to // look in all the new modules to resolve this location. Otherwise, if // it was set in this module, re-resolve it here. - if (section_sp && section_sp->GetModule() == module_sp) { + if (!section_sp || section_sp->GetModule() == module_sp) { if (!seen) seen = true; diff --git a/lldb/source/Core/Address.cpp b/lldb/source/Core/Address.cpp index f183245f7d3..eb54278d665 100644 --- a/lldb/source/Core/Address.cpp +++ b/lldb/source/Core/Address.cpp @@ -281,7 +281,7 @@ addr_t Address::GetFileAddress() const { // We have a valid file range, so we can return the file based address by // adding the file base address to our offset return sect_file_addr + m_offset; - } else if (SectionWasDeletedPrivate()) { + } else if (SectionWasDeleted()) { // Used to have a valid section but it got deleted so the offset doesn't // mean anything without the section return LLDB_INVALID_ADDRESS; @@ -302,7 +302,7 @@ addr_t Address::GetLoadAddress(Target *target) const { return sect_load_addr + m_offset; } } - } else if (SectionWasDeletedPrivate()) { + } else if (SectionWasDeleted()) { // Used to have a valid section but it got deleted so the offset doesn't // mean anything without the section return LLDB_INVALID_ADDRESS; @@ -761,12 +761,6 @@ bool Address::Dump(Stream *s, ExecutionContextScope *exe_scope, DumpStyle style, } bool Address::SectionWasDeleted() const { - if (GetSection()) - return false; - return SectionWasDeletedPrivate(); -} - -bool Address::SectionWasDeletedPrivate() const { lldb::SectionWP empty_section_wp; // If either call to "std::weak_ptr::owner_before(...) value returns true, |
