[Lldb-commits] [lldb] (lldb) Correctly fix a usage of `PATH_MAX` and unit tests (PR #104502)

via lldb-commits lldb-commits at lists.llvm.org
Thu Aug 15 15:38:32 PDT 2024


https://github.com/royitaqi updated https://github.com/llvm/llvm-project/pull/104502

>From 1e0e766530acffc29fef0b0b2cd909a943a92599 Mon Sep 17 00:00:00 2001
From: Roy Shi <royshi at meta.com>
Date: Thu, 15 Aug 2024 13:34:53 -0700
Subject: [PATCH 1/5] (lldb) (minor) Correctly fix a usage of PATH_MAX

---
 lldb/source/Utility/RealpathPrefixes.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lldb/source/Utility/RealpathPrefixes.cpp b/lldb/source/Utility/RealpathPrefixes.cpp
index ee1c404c899676..78ba6ee6558641 100644
--- a/lldb/source/Utility/RealpathPrefixes.cpp
+++ b/lldb/source/Utility/RealpathPrefixes.cpp
@@ -8,7 +8,6 @@
 
 #include "lldb/Utility/RealpathPrefixes.h"
 
-#include "lldb/Host/PosixApi.h"
 #include "lldb/Utility/FileSpec.h"
 #include "lldb/Utility/FileSpecList.h"
 #include "lldb/Utility/LLDBLog.h"
@@ -54,7 +53,7 @@ RealpathPrefixes::ResolveSymlinks(const FileSpec &file_spec) {
       LLDB_LOGF(log, "Realpath'ing support file %s", file_spec_path.c_str());
 
       // One prefix matched. Try to realpath.
-      llvm::SmallString<PATH_MAX> buff;
+      llvm::SmallString<1024> buff;
       std::error_code ec = m_fs->getRealPath(file_spec_path, buff);
       if (ec)
         return std::nullopt;

>From 3813cf592c64f5ed3202fb76032c7f2d1ac91b83 Mon Sep 17 00:00:00 2001
From: Roy Shi <royshi at meta.com>
Date: Thu, 15 Aug 2024 15:18:58 -0700
Subject: [PATCH 2/5] Fix unit tests for Windows

---
 lldb/unittests/Utility/FileSpecListTest.cpp   | 64 +++++++++---------
 .../Utility/RealpathPrefixesTest.cpp          | 65 +++++++++++--------
 2 files changed, 69 insertions(+), 60 deletions(-)

diff --git a/lldb/unittests/Utility/FileSpecListTest.cpp b/lldb/unittests/Utility/FileSpecListTest.cpp
index 4c04f434261301..d18445365999c7 100644
--- a/lldb/unittests/Utility/FileSpecListTest.cpp
+++ b/lldb/unittests/Utility/FileSpecListTest.cpp
@@ -133,20 +133,20 @@ TEST(SupportFileListTest, RelativePathMatchesWindows) {
 TEST(SupportFileListTest, SymlinkedAbsolutePaths) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("/symlink_dir/foo.h"), FileSpec("/real_dir/foo.h")));
+      PosixSpec("/symlink_dir/foo.h"), PosixSpec("/real_dir/foo.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("/symlink_dir");
+  file_spec_list.Append(PosixSpec("/symlink_dir"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("/symlink_dir/foo.h"));
+  support_file_list.Append(PosixSpec("/symlink_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("/real_dir/foo.h"), &prefixes);
+      0, PosixSpec("/real_dir/foo.h"), &prefixes);
   EXPECT_EQ(ret, (size_t)0);
 }
 
@@ -157,20 +157,20 @@ TEST(SupportFileListTest, SymlinkedAbsolutePaths) {
 TEST(SupportFileListTest, RootDirectory) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("/symlink_dir/foo.h"), FileSpec("/real_dir/foo.h")));
+      PosixSpec("/symlink_dir/foo.h"), PosixSpec("/real_dir/foo.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("/");
+  file_spec_list.Append(PosixSpec("/"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("/symlink_dir/foo.h"));
+  support_file_list.Append(PosixSpec("/symlink_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("/real_dir/foo.h"), &prefixes);
+      0, PosixSpec("/real_dir/foo.h"), &prefixes);
   EXPECT_EQ(ret, (size_t)0);
 }
 
@@ -181,20 +181,20 @@ TEST(SupportFileListTest, RootDirectory) {
 TEST(SupportFileListTest, SymlinkedRelativePaths) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("symlink_dir/foo.h"), FileSpec("real_dir/foo.h")));
+      PosixSpec("symlink_dir/foo.h"), PosixSpec("real_dir/foo.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("symlink_dir");
+  file_spec_list.Append(PosixSpec("symlink_dir"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("symlink_dir/foo.h"));
+  support_file_list.Append(PosixSpec("symlink_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("real_dir/foo.h"), &prefixes);
+      0, PosixSpec("real_dir/foo.h"), &prefixes);
   EXPECT_EQ(ret, (size_t)0);
 }
 
@@ -205,20 +205,20 @@ TEST(SupportFileListTest, SymlinkedRelativePaths) {
 TEST(SupportFileListTest, RealpathOnlyMatchFileName) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("symlink_dir/foo.h"), FileSpec("real_dir/foo.h")));
+      PosixSpec("symlink_dir/foo.h"), PosixSpec("real_dir/foo.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("symlink_dir");
+  file_spec_list.Append(PosixSpec("symlink_dir"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("symlink_dir/foo.h"));
+  support_file_list.Append(PosixSpec("symlink_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("some_other_dir/foo.h"), &prefixes);
+      0, PosixSpec("some_other_dir/foo.h"), &prefixes);
   EXPECT_EQ(ret, UINT32_MAX);
 }
 
@@ -228,21 +228,21 @@ TEST(SupportFileListTest, RealpathOnlyMatchFileName) {
 TEST(SupportFileListTest, DirectoryMatchStringPrefixButNotWholeDirectoryName) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("symlink_dir/foo.h"), FileSpec("real_dir/foo.h")));
+      PosixSpec("symlink_dir/foo.h"), PosixSpec("real_dir/foo.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("symlink"); // This is a string prefix of the
+  file_spec_list.Append(PosixSpec("symlink")); // This is a string prefix of the
                                          // symlink but not a path prefix.
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("symlink_dir/foo.h"));
+  support_file_list.Append(PosixSpec("symlink_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("real_dir/foo.h"), &prefixes);
+      0, PosixSpec("real_dir/foo.h"), &prefixes);
   EXPECT_EQ(ret, UINT32_MAX);
 }
 
@@ -253,20 +253,20 @@ TEST(SupportFileListTest, DirectoryMatchStringPrefixButNotWholeDirectoryName) {
 TEST(SupportFileListTest, PartialBreakpointPath) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("symlink_dir/foo.h"), FileSpec("/real_dir/foo.h")));
+      PosixSpec("symlink_dir/foo.h"), PosixSpec("/real_dir/foo.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("symlink_dir");
+  file_spec_list.Append(PosixSpec("symlink_dir"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("symlink_dir/foo.h"));
+  support_file_list.Append(PosixSpec("symlink_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("real_dir/foo.h"), &prefixes);
+      0, PosixSpec("real_dir/foo.h"), &prefixes);
   EXPECT_EQ(ret, (size_t)0);
 }
 
@@ -277,20 +277,20 @@ TEST(SupportFileListTest, PartialBreakpointPath) {
 TEST(SupportFileListTest, DifferentBasename) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("/symlink_dir/foo.h"), FileSpec("/real_dir/bar.h")));
+      PosixSpec("/symlink_dir/foo.h"), PosixSpec("/real_dir/bar.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("/symlink_dir");
+  file_spec_list.Append(PosixSpec("/symlink_dir"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("/symlink_dir/foo.h"));
+  support_file_list.Append(PosixSpec("/symlink_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("real_dir/bar.h"), &prefixes);
+      0, PosixSpec("real_dir/bar.h"), &prefixes);
   EXPECT_EQ(ret, UINT32_MAX);
 }
 
@@ -300,11 +300,11 @@ TEST(SupportFileListTest, DifferentBasename) {
 TEST(SupportFileListTest, NoPrefixes) {
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("/real_dir/bar.h"));
+  support_file_list.Append(PosixSpec("/real_dir/bar.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("/real_dir/foo.h"), nullptr);
+      0, PosixSpec("/real_dir/foo.h"), nullptr);
   EXPECT_EQ(ret, UINT32_MAX);
 }
 
@@ -314,10 +314,10 @@ TEST(SupportFileListTest, NoPrefixes) {
 TEST(SupportFileListTest, SameFile) {
   // Prepare support file list
   SupportFileList support_file_list;
-  support_file_list.EmplaceBack(FileSpec("/real_dir/foo.h"));
+  support_file_list.Append(PosixSpec("/real_dir/foo.h"));
 
   // Test
   size_t ret = support_file_list.FindCompatibleIndex(
-      0, FileSpec("/real_dir/foo.h"), nullptr);
+      0, PosixSpec("/real_dir/foo.h"), nullptr);
   EXPECT_EQ(ret, (size_t)0);
 }
diff --git a/lldb/unittests/Utility/RealpathPrefixesTest.cpp b/lldb/unittests/Utility/RealpathPrefixesTest.cpp
index 872ddf1fd223aa..52387067596d7a 100644
--- a/lldb/unittests/Utility/RealpathPrefixesTest.cpp
+++ b/lldb/unittests/Utility/RealpathPrefixesTest.cpp
@@ -15,57 +15,66 @@
 
 using namespace lldb_private;
 
+static FileSpec PosixSpec(llvm::StringRef path) {
+  return FileSpec(path, FileSpec::Style::posix);
+}
+
+static FileSpec WindowsSpec(llvm::StringRef path) {
+  return FileSpec(path, FileSpec::Style::windows);
+}
+
+
 // Should resolve a symlink which match an absolute prefix
 TEST(RealpathPrefixesTest, MatchingAbsolutePrefix) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("/dir1/link.h"), FileSpec("/dir2/real.h")));
+      PosixSpec("/dir1/link.h"), PosixSpec("/dir2/real.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("/dir1");
+  file_spec_list.Append(PosixSpec("/dir1"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
   std::optional<FileSpec> ret =
-      prefixes.ResolveSymlinks(FileSpec("/dir1/link.h"));
-  EXPECT_EQ(ret, FileSpec("/dir2/real.h"));
+      prefixes.ResolveSymlinks(PosixSpec("/dir1/link.h"));
+  EXPECT_EQ(ret, PosixSpec("/dir2/real.h"));
 }
 
 // Should resolve a symlink which match a relative prefix
 TEST(RealpathPrefixesTest, MatchingRelativePrefix) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("dir1/link.h"), FileSpec("dir2/real.h")));
+      PosixSpec("dir1/link.h"), PosixSpec("dir2/real.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("dir1");
+  file_spec_list.Append(PosixSpec("dir1"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
   std::optional<FileSpec> ret =
-      prefixes.ResolveSymlinks(FileSpec("dir1/link.h"));
-  EXPECT_EQ(ret, FileSpec("dir2/real.h"));
+      prefixes.ResolveSymlinks(PosixSpec("dir1/link.h"));
+  EXPECT_EQ(ret, PosixSpec("dir2/real.h"));
 }
 
 // Should resolve in Windows and/or with a case-insensitive support file
 TEST(RealpathPrefixesTest, WindowsAndCaseInsensitive) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("f:\\dir1\\link.h", FileSpec::Style::windows),
-      FileSpec("f:\\dir2\\real.h", FileSpec::Style::windows),
+      WindowsSpec("f:\\dir1\\link.h"),
+      WindowsSpec("f:\\dir2\\real.h"),
       FileSpec::Style::windows));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack(FileSpec("f:\\dir1", FileSpec::Style::windows));
+  file_spec_list.Append(WindowsSpec("f:\\dir1"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
   std::optional<FileSpec> ret = prefixes.ResolveSymlinks(
-      FileSpec("F:\\DIR1\\LINK.H", FileSpec::Style::windows));
-  EXPECT_EQ(ret, FileSpec("f:\\dir2\\real.h", FileSpec::Style::windows));
+      WindowsSpec("F:\\DIR1\\LINK.H"));
+  EXPECT_EQ(ret, WindowsSpec("f:\\dir2\\real.h"));
 }
 
 // Should resolve a symlink when there is mixture of matching and mismatching
@@ -73,52 +82,52 @@ TEST(RealpathPrefixesTest, WindowsAndCaseInsensitive) {
 TEST(RealpathPrefixesTest, MatchingAndMismatchingPrefix) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("/dir1/link.h"), FileSpec("/dir2/real.h")));
+      PosixSpec("/dir1/link.h"), PosixSpec("/dir2/real.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("/fake/path1");
-  file_spec_list.EmplaceBack("/dir1"); // Matching prefix
-  file_spec_list.EmplaceBack("/fake/path2");
+  file_spec_list.Append(PosixSpec("/fake/path1"));
+  file_spec_list.Append(PosixSpec("/dir1")); // Matching prefix
+  file_spec_list.Append(PosixSpec("/fake/path2"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
   std::optional<FileSpec> ret =
-      prefixes.ResolveSymlinks(FileSpec("/dir1/link.h"));
-  EXPECT_EQ(ret, FileSpec("/dir2/real.h"));
+      prefixes.ResolveSymlinks(PosixSpec("/dir1/link.h"));
+  EXPECT_EQ(ret, PosixSpec("/dir2/real.h"));
 }
 
 // Should resolve a symlink when the prefixes matches after normalization
 TEST(RealpathPrefixesTest, ComplexPrefixes) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("dir1/link.h"), FileSpec("dir2/real.h")));
+      PosixSpec("dir1/link.h"), PosixSpec("dir2/real.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("./dir1/foo/../bar/.."); // Equivalent to "/dir1"
+  file_spec_list.Append(PosixSpec("./dir1/foo/../bar/..")); // Equivalent to "/dir1"
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
   std::optional<FileSpec> ret =
-      prefixes.ResolveSymlinks(FileSpec("dir1/link.h"));
-  EXPECT_EQ(ret, FileSpec("dir2/real.h"));
+      prefixes.ResolveSymlinks(PosixSpec("dir1/link.h"));
+  EXPECT_EQ(ret, PosixSpec("dir2/real.h"));
 }
 
 // Should not resolve a symlink which doesn't match any prefixes
 TEST(RealpathPrefixesTest, MismatchingPrefixes) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      FileSpec("/dir1/link.h"), FileSpec("/dir2/real.h")));
+      PosixSpec("/dir1/link.h"), PosixSpec("/dir2/real.h")));
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("/dir3");
+  file_spec_list.Append(PosixSpec("/dir3"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
   std::optional<FileSpec> ret =
-      prefixes.ResolveSymlinks(FileSpec("/dir1/link.h"));
+      prefixes.ResolveSymlinks(PosixSpec("/dir1/link.h"));
   EXPECT_EQ(ret, std::nullopt);
 }
 
@@ -130,11 +139,11 @@ TEST(RealpathPrefixesTest, Realpath) {
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.EmplaceBack("/symlink_dir");
+  file_spec_list.Append(PosixSpec("/symlink_dir"));
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
   std::optional<FileSpec> ret =
-      prefixes.ResolveSymlinks(FileSpec("/dir/real.h"));
+      prefixes.ResolveSymlinks(PosixSpec("/dir/real.h"));
   EXPECT_EQ(ret, std::nullopt);
 }

>From a8c968c4f4b37b6aaee3cfab800a15eaa80b8452 Mon Sep 17 00:00:00 2001
From: Roy Shi <royshi at meta.com>
Date: Thu, 15 Aug 2024 15:29:07 -0700
Subject: [PATCH 3/5] Typedef PathSmallString in lldb_private

---
 lldb/include/lldb/lldb-private-types.h   | 3 +++
 lldb/source/Utility/RealpathPrefixes.cpp | 3 ++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lldb/include/lldb/lldb-private-types.h b/lldb/include/lldb/lldb-private-types.h
index 055eea9f6456d6..755183f91e8ecf 100644
--- a/lldb/include/lldb/lldb-private-types.h
+++ b/lldb/include/lldb/lldb-private-types.h
@@ -12,6 +12,7 @@
 #include "lldb/lldb-private.h"
 
 #include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallString.h"
 
 #include <type_traits>
 
@@ -26,6 +27,8 @@ class Platform;
 class ExecutionContext;
 class RegisterFlags;
 
+typedef llvm::SmallString<128> PathSmallString;
+
 typedef llvm::sys::DynamicLibrary (*LoadPluginCallbackType)(
     const lldb::DebuggerSP &debugger_sp, const FileSpec &spec, Status &error);
 
diff --git a/lldb/source/Utility/RealpathPrefixes.cpp b/lldb/source/Utility/RealpathPrefixes.cpp
index 78ba6ee6558641..3ebe5aed44ba3d 100644
--- a/lldb/source/Utility/RealpathPrefixes.cpp
+++ b/lldb/source/Utility/RealpathPrefixes.cpp
@@ -8,6 +8,7 @@
 
 #include "lldb/Utility/RealpathPrefixes.h"
 
+#include "lldb/lldb-private-types.h"
 #include "lldb/Utility/FileSpec.h"
 #include "lldb/Utility/FileSpecList.h"
 #include "lldb/Utility/LLDBLog.h"
@@ -53,7 +54,7 @@ RealpathPrefixes::ResolveSymlinks(const FileSpec &file_spec) {
       LLDB_LOGF(log, "Realpath'ing support file %s", file_spec_path.c_str());
 
       // One prefix matched. Try to realpath.
-      llvm::SmallString<1024> buff;
+      PathSmallString buff;
       std::error_code ec = m_fs->getRealPath(file_spec_path, buff);
       if (ec)
         return std::nullopt;

>From 15b855a292f74144b7c06e875d85c73113ac3ae9 Mon Sep 17 00:00:00 2001
From: Roy Shi <royshi at meta.com>
Date: Thu, 15 Aug 2024 15:30:16 -0700
Subject: [PATCH 4/5] Fix format

---
 lldb/source/Utility/RealpathPrefixes.cpp        |  2 +-
 lldb/unittests/Utility/FileSpecListTest.cpp     |  2 +-
 lldb/unittests/Utility/RealpathPrefixesTest.cpp | 11 +++++------
 3 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/lldb/source/Utility/RealpathPrefixes.cpp b/lldb/source/Utility/RealpathPrefixes.cpp
index 3ebe5aed44ba3d..f6e1d17e30c696 100644
--- a/lldb/source/Utility/RealpathPrefixes.cpp
+++ b/lldb/source/Utility/RealpathPrefixes.cpp
@@ -8,11 +8,11 @@
 
 #include "lldb/Utility/RealpathPrefixes.h"
 
-#include "lldb/lldb-private-types.h"
 #include "lldb/Utility/FileSpec.h"
 #include "lldb/Utility/FileSpecList.h"
 #include "lldb/Utility/LLDBLog.h"
 #include "lldb/Utility/Log.h"
+#include "lldb/lldb-private-types.h"
 
 using namespace lldb_private;
 
diff --git a/lldb/unittests/Utility/FileSpecListTest.cpp b/lldb/unittests/Utility/FileSpecListTest.cpp
index d18445365999c7..b13d8fc2aa5dc4 100644
--- a/lldb/unittests/Utility/FileSpecListTest.cpp
+++ b/lldb/unittests/Utility/FileSpecListTest.cpp
@@ -233,7 +233,7 @@ TEST(SupportFileListTest, DirectoryMatchStringPrefixButNotWholeDirectoryName) {
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
   file_spec_list.Append(PosixSpec("symlink")); // This is a string prefix of the
-                                         // symlink but not a path prefix.
+                                               // symlink but not a path prefix.
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Prepare support file list
diff --git a/lldb/unittests/Utility/RealpathPrefixesTest.cpp b/lldb/unittests/Utility/RealpathPrefixesTest.cpp
index 52387067596d7a..731ee7811d9886 100644
--- a/lldb/unittests/Utility/RealpathPrefixesTest.cpp
+++ b/lldb/unittests/Utility/RealpathPrefixesTest.cpp
@@ -23,7 +23,6 @@ static FileSpec WindowsSpec(llvm::StringRef path) {
   return FileSpec(path, FileSpec::Style::windows);
 }
 
-
 // Should resolve a symlink which match an absolute prefix
 TEST(RealpathPrefixesTest, MatchingAbsolutePrefix) {
   // Prepare FS
@@ -62,8 +61,7 @@ TEST(RealpathPrefixesTest, MatchingRelativePrefix) {
 TEST(RealpathPrefixesTest, WindowsAndCaseInsensitive) {
   // Prepare FS
   llvm::IntrusiveRefCntPtr<MockSymlinkFileSystem> fs(new MockSymlinkFileSystem(
-      WindowsSpec("f:\\dir1\\link.h"),
-      WindowsSpec("f:\\dir2\\real.h"),
+      WindowsSpec("f:\\dir1\\link.h"), WindowsSpec("f:\\dir2\\real.h"),
       FileSpec::Style::windows));
 
   // Prepare RealpathPrefixes
@@ -72,8 +70,8 @@ TEST(RealpathPrefixesTest, WindowsAndCaseInsensitive) {
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test
-  std::optional<FileSpec> ret = prefixes.ResolveSymlinks(
-      WindowsSpec("F:\\DIR1\\LINK.H"));
+  std::optional<FileSpec> ret =
+      prefixes.ResolveSymlinks(WindowsSpec("F:\\DIR1\\LINK.H"));
   EXPECT_EQ(ret, WindowsSpec("f:\\dir2\\real.h"));
 }
 
@@ -105,7 +103,8 @@ TEST(RealpathPrefixesTest, ComplexPrefixes) {
 
   // Prepare RealpathPrefixes
   FileSpecList file_spec_list;
-  file_spec_list.Append(PosixSpec("./dir1/foo/../bar/..")); // Equivalent to "/dir1"
+  file_spec_list.Append(
+      PosixSpec("./dir1/foo/../bar/..")); // Equivalent to "/dir1"
   RealpathPrefixes prefixes(file_spec_list, fs);
 
   // Test

>From 85a2061305a61f46dc871b1078dc43ce91f7bdfd Mon Sep 17 00:00:00 2001
From: Roy Shi <royshi at meta.com>
Date: Thu, 15 Aug 2024 15:38:19 -0700
Subject: [PATCH 5/5] Change initial size to 256

---
 lldb/include/lldb/lldb-private-types.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lldb/include/lldb/lldb-private-types.h b/lldb/include/lldb/lldb-private-types.h
index 755183f91e8ecf..b82a2b8aa05744 100644
--- a/lldb/include/lldb/lldb-private-types.h
+++ b/lldb/include/lldb/lldb-private-types.h
@@ -27,7 +27,7 @@ class Platform;
 class ExecutionContext;
 class RegisterFlags;
 
-typedef llvm::SmallString<128> PathSmallString;
+typedef llvm::SmallString<256> PathSmallString;
 
 typedef llvm::sys::DynamicLibrary (*LoadPluginCallbackType)(
     const lldb::DebuggerSP &debugger_sp, const FileSpec &spec, Status &error);



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