Revert "Defer source path remap tilde expansion until source file use"

This reverts commit c274b6e.

The x86_64 debian bot got a failure with this patch,
https://lab.llvm.org/buildbot#builders/68/builds/33078
where
SymbolFile/DWARF/x86/DW_TAG_variable-DW_AT_decl_file-DW_AT_abstract_origin-crosscu1.s
is crashing here -

 #2 0x0000000000425a9f SignalHandler(int) Signals.cpp:0:0
 #3 0x00007f57160e9140 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14140)
 #4 0x00007f570d911e43 lldb_private::SourceManager::GetFile(lldb_private::FileSpec const&) crtstuff.c:0:0
 #5 0x00007f570d914270 lldb_private::SourceManager::DisplaySourceLinesWithLineNumbers(lldb_private::FileSpec const&, unsigned int, unsigned int, unsigned int, unsigned int, char const*, lldb_private::Stream*, lldb_private::SymbolContextList const*) crtstuff.c:0:0
 #6 0x00007f570da662c8 lldb_private::StackFrame::GetStatus(lldb_private::Stream&, bool, bool, bool, char const*) crtstuff.c:0:0

I don't get a failure here my mac, I'll review this method more
closely tomorrow.

Author: jasonmolenda

lldb/source/Core/SourceManager.cpp

@@ -49,13 +49,6 @@ using namespace lldb_private;
 
 static inline bool is_newline_char(char ch) { return ch == '\n' || ch == '\r'; }
 
-static void resolve_tilde(FileSpec &file_spec) {
-  if (!FileSystem::Instance().Exists(file_spec) &&
-      file_spec.GetDirectory().GetCString()[0] == '~') {
-    FileSystem::Instance().Resolve(file_spec);
-  }
-}
-
 // SourceManager constructor
 SourceManager::SourceManager(const TargetSP &target_sp)
     : m_last_line(0), m_last_count(0), m_default_set(false),
@@ -73,13 +66,10 @@ SourceManager::FileSP SourceManager::GetFile(const FileSpec &file_spec) {
   if (!file_spec)
     return nullptr;
 
-  FileSpec resolved_fspec = file_spec;
-  resolve_tilde(resolved_fspec);
-
   DebuggerSP debugger_sp(m_debugger_wp.lock());
   FileSP file_sp;
   if (debugger_sp && debugger_sp->GetUseSourceCache())
-    file_sp = debugger_sp->GetSourceFileCache().FindSourceFile(resolved_fspec);
+    file_sp = debugger_sp->GetSourceFileCache().FindSourceFile(file_spec);
 
   TargetSP target_sp(m_target_wp.lock());
 
@@ -97,9 +87,9 @@ SourceManager::FileSP SourceManager::GetFile(const FileSpec &file_spec) {
   // If file_sp is no good or it points to a non-existent file, reset it.
   if (!file_sp || !FileSystem::Instance().Exists(file_sp->GetFileSpec())) {
     if (target_sp)
-      file_sp = std::make_shared<File>(resolved_fspec, target_sp.get());
+      file_sp = std::make_shared<File>(file_spec, target_sp.get());
     else
-      file_sp = std::make_shared<File>(resolved_fspec, debugger_sp);
+      file_sp = std::make_shared<File>(file_spec, debugger_sp);
 
     if (debugger_sp && debugger_sp->GetUseSourceCache())
       debugger_sp->GetSourceFileCache().AddSourceFile(file_sp);
@@ -451,7 +441,6 @@ void SourceManager::File::CommonInitializer(const FileSpec &file_spec,
           }
         }
       }
-      resolve_tilde(m_file_spec);
       // Try remapping if m_file_spec does not correspond to an existing file.
       if (!FileSystem::Instance().Exists(m_file_spec)) {
         // Check target specific source remappings (i.e., the

lldb/source/Plugins/SymbolVendor/MacOSX/SymbolVendorMacOSX.cpp

@@ -237,6 +237,13 @@ SymbolVendorMacOSX::CreateInstance(const lldb::ModuleSP &module_sp,
                                   !original_DBGSourcePath_value.empty()) {
                                 DBGSourcePath = original_DBGSourcePath_value;
                               }
+                              if (DBGSourcePath[0] == '~') {
+                                FileSpec resolved_source_path(
+                                    DBGSourcePath.c_str());
+                                FileSystem::Instance().Resolve(
+                                    resolved_source_path);
+                                DBGSourcePath = resolved_source_path.GetPath();
+                              }
                               module_sp->GetSourceMappingList().Append(
                                   key.GetStringRef(), DBGSourcePath, true);
                               // With version 2 of DBGSourcePathRemapping, we
@@ -268,6 +275,11 @@ SymbolVendorMacOSX::CreateInstance(const lldb::ModuleSP &module_sp,
                                            DBGBuildSourcePath);
                     plist.GetValueAsString("DBGSourcePath", DBGSourcePath);
                     if (!DBGBuildSourcePath.empty() && !DBGSourcePath.empty()) {
+                      if (DBGSourcePath[0] == '~') {
+                        FileSpec resolved_source_path(DBGSourcePath.c_str());
+                        FileSystem::Instance().Resolve(resolved_source_path);
+                        DBGSourcePath = resolved_source_path.GetPath();
+                      }
                       module_sp->GetSourceMappingList().Append(
                           DBGBuildSourcePath, DBGSourcePath, true);
                     }