[LLD] [COFF] Restore the current dir as the first entry in the search path #67857
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This goes on top of #67856 - disregard the first commit in the branch when reviewing this one. |
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@llvm/pr-subscribers-lld @llvm/pr-subscribers-platform-windows ChangesBefore af744f0, the first entry This would cause lookups of literal file names or relative paths Change addClangLibSearchPaths to append to the list like all other This fixes #67779. Full diff: https://github.com/llvm/llvm-project/pull/67857.diff 2 Files Affected:
diff --git a/lld/COFF/Driver.cpp b/lld/COFF/Driver.cpp
index 61a04a74aa60278..e2f414f78ecb7bc 100644
--- a/lld/COFF/Driver.cpp
+++ b/lld/COFF/Driver.cpp
@@ -645,23 +645,19 @@ void LinkerDriver::addClangLibSearchPaths(const std::string &argv0) {
SmallString<128> libDir(rootDir);
sys::path::append(libDir, "lib");
- // We need to prepend the paths here in order to make sure that we always
- // try to link the clang versions of the builtins over the ones supplied by
- // MSVC.
- searchPaths.insert(searchPaths.begin(), saver().save(libDir.str()));
// Add the resource dir library path
SmallString<128> runtimeLibDir(rootDir);
sys::path::append(runtimeLibDir, "lib", "clang",
std::to_string(LLVM_VERSION_MAJOR), "lib");
- searchPaths.insert(searchPaths.begin(), saver().save(runtimeLibDir.str()));
-
// Resource dir + osname, which is hardcoded to windows since we are in the
// COFF driver.
SmallString<128> runtimeLibDirWithOS(runtimeLibDir);
sys::path::append(runtimeLibDirWithOS, "windows");
- searchPaths.insert(searchPaths.begin(),
- saver().save(runtimeLibDirWithOS.str()));
+
+ searchPaths.push_back(saver().save(runtimeLibDirWithOS.str()));
+ searchPaths.push_back(saver().save(runtimeLibDir.str()));
+ searchPaths.push_back(saver().save(libDir.str()));
}
void LinkerDriver::addWinSysRootLibSearchPaths() {
@@ -1564,12 +1560,13 @@ void LinkerDriver::linkerMain(ArrayRef<const char *> argsArr) {
// Construct search path list.
searchPaths.emplace_back("");
+ // Prefer the Clang provided builtins over the ones bundled with MSVC.
+ addClangLibSearchPaths(argsArr[0]);
for (auto *arg : args.filtered(OPT_libpath))
searchPaths.push_back(arg->getValue());
detectWinSysRoot(args);
if (!args.hasArg(OPT_lldignoreenv) && !args.hasArg(OPT_winsysroot))
addLibSearchPaths();
- addClangLibSearchPaths(argsArr[0]);
// Handle /ignore
for (auto *arg : args.filtered(OPT_ignore)) {
@@ -2084,8 +2081,11 @@ void LinkerDriver::linkerMain(ArrayRef<const char *> argsArr) {
raw_svector_ostream stream(buffer);
stream << "Library search paths:\n";
- for (StringRef path : searchPaths)
+ for (StringRef path : searchPaths) {
+ if (path == "")
+ path = "(cwd)";
stream << " " << path << "\n";
+ }
message(buffer);
}
diff --git a/lld/test/COFF/print-search-paths.s b/lld/test/COFF/print-search-paths.s
index 5c292aafc68a11c..463cc55a793740c 100644
--- a/lld/test/COFF/print-search-paths.s
+++ b/lld/test/COFF/print-search-paths.s
@@ -4,21 +4,25 @@
# RUN: llvm-mc -triple i686-windows-msvc %s -filetype=obj -o %t_32.obj
# RUN: lld-link -safeseh:no /dll /noentry /winsysroot:%t.dir/sysroot /vctoolsversion:1.1.1.1 /winsdkversion:10.0.1 %t_32.obj -print-search-paths | FileCheck -DSYSROOT=%t.dir -check-prefix=X86 %s
# CHECK: Library search paths:
-# CHECK: [[CPATH:.*]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib{{[/\\]}}windows
-# CHECK: [[CPATH]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib
-# CHECK: [[CPATH]]lib
-# CHECK: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}lib{{[/\\]}}x64
-# CHECK: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}atlmfc{{[/\\]}}lib{{[/\\]}}x64
-# CHECK: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}ucrt{{[/\\]}}x64
-# CHECK: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}um{{[/\\]}}x64
+# CHECK-NEXT: (cwd)
+# CHECK-NEXT: [[CPATH:.*]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib{{[/\\]}}windows
+# CHECK-NEXT: [[CPATH]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib
+# CHECK-NEXT: [[CPATH]]lib
+# CHECK-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}DIA SDK{{[/\\]}}lib{{[/\\]}}amd64
+# CHECK-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}lib{{[/\\]}}x64
+# CHECK-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}atlmfc{{[/\\]}}lib{{[/\\]}}x64
+# CHECK-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}ucrt{{[/\\]}}x64
+# CHECK-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}um{{[/\\]}}x64
# X86: Library search paths:
-# X86: [[CPATH:.*]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib{{[/\\]}}windows
-# X86: [[CPATH]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib
-# X86: [[CPATH]]lib
-# X86: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}lib{{[/\\]}}x86
-# X86: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}atlmfc{{[/\\]}}lib{{[/\\]}}x86
-# X86: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}ucrt{{[/\\]}}x86
-# X86: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}um{{[/\\]}}x86
+# X86-NEXT: (cwd)
+# X86-NEXT: [[CPATH:.*]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib{{[/\\]}}windows
+# X86-NEXT: [[CPATH]]lib{{[/\\]}}clang{{[/\\]}}{{[0-9]+}}{{[/\\]}}lib
+# X86-NEXT: [[CPATH]]lib
+# X86-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}DIA SDK{{[/\\]}}lib
+# X86-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}lib{{[/\\]}}x86
+# X86-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}VC{{[/\\]}}Tools{{[/\\]}}MSVC{{[/\\]}}1.1.1.1{{[/\\]}}atlmfc{{[/\\]}}lib{{[/\\]}}x86
+# X86-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}ucrt{{[/\\]}}x86
+# X86-NEXT: [[SYSROOT]]{{[/\\]}}sysroot{{[/\\]}}Windows Kits{{[/\\]}}10{{[/\\]}}Lib{{[/\\]}}10.0.1{{[/\\]}}um{{[/\\]}}x86
.text
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… path Before af744f0, the first entry among the search paths was the empty string, indicating searching in (or starting from) the current directory. After af744f0, the toolchain/clang specific lib directories were added at the head of the search path. This would cause lookups of literal file names or relative paths to match paths in the toolchain, if there are coincidental files with similar names there, even if they would be find in the current directory as well. Change addClangLibSearchPaths to append to the list like all other operations on searchPaths - but move the invocation of the function to the right place in the sequence. This fixes llvm#67779.
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… path (#67857) Before af744f0, the first entry among the search paths was the empty string, indicating searching in (or starting from) the current directory. After af744f0, the toolchain/clang specific lib directories were added at the head of the search path. This would cause lookups of literal file names or relative paths to match paths in the toolchain, if there are coincidental files with similar names there, even if they would be find in the current directory as well. Change addClangLibSearchPaths to append to the list like all other operations on searchPaths - but move the invocation of the function to the right place in the sequence. This fixes #67779. (cherry picked from commit f906fd5)
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Before af744f0, the first entry
among the search paths was the empty string, indicating searching
in (or starting from) the current directory. After
af744f0, the toolchain/clang
specific lib directories were added at the head of the search path.
This would cause lookups of literal file names or relative paths
to match paths in the toolchain, if there are coincidental files
with similar names there, even if they would be find in the current
directory as well.
Change addClangLibSearchPaths to append to the list like all other
operations on searchPaths - but move the invocation of the
function to the right place in the sequence.
This fixes #67779.