llvm::make_unique<ModuleDependencyMMCallbacks>(*this));
}
+static bool isCaseSensitivePath(StringRef Path) {
+ SmallString<PATH_MAX> TmpDest = Path, UpperDest, RealDest;
+ // Remove component traversals, links, etc.
+ if (!real_path(Path, TmpDest))
+ return true; // Current default value in vfs.yaml
+ Path = TmpDest;
+
+ // Change path to all upper case and ask for its real path, if the latter
+ // exists and is equal to Path, it's not case sensitive. Default to case
+ // sensitive in the absense of realpath, since this is what the VFSWriter
+ // already expects when sensitivity isn't setup.
+ for (auto &C : Path)
+ UpperDest.push_back(std::toupper(C));
+ if (real_path(UpperDest, RealDest) && Path.equals(RealDest))
+ return false;
+ return true;
+}
+
void ModuleDependencyCollector::writeFileMap() {
if (Seen.empty())
return;
- SmallString<256> Dest = getDest();
- llvm::sys::path::append(Dest, "vfs.yaml");
+ StringRef VFSDir = getDest();
// Default to use relative overlay directories in the VFS yaml file. This
// allows crash reproducer scripts to work across machines.
- VFSWriter.setOverlayDir(getDest());
+ VFSWriter.setOverlayDir(VFSDir);
+
+ // Explicitly set case sensitivity for the YAML writer. For that, find out
+ // the sensitivity at the path where the headers all collected to.
+ VFSWriter.setCaseSensitivity(isCaseSensitivePath(VFSDir));
std::error_code EC;
- llvm::raw_fd_ostream OS(Dest, EC, llvm::sys::fs::F_Text);
+ SmallString<256> YAMLPath = VFSDir;
+ llvm::sys::path::append(YAMLPath, "vfs.yaml");
+ llvm::raw_fd_ostream OS(YAMLPath, EC, llvm::sys::fs::F_Text);
if (EC) {
HasErrors = true;
return;
// CHECKSH: "-ivfsoverlay" "crash-vfs-{{[^ ]*}}.cache/vfs/vfs.yaml"
// CHECKSH: "-fmodules-cache-path=crash-vfs-{{[^ ]*}}.cache/modules"
+// CHECKYAML: 'case-sensitive':
+// CHECKYAML-NEXT: 'overlay-relative': 'true',
// CHECKYAML: 'type': 'directory'
// CHECKYAML: 'name': "/[[PATH:.*]]/Inputs/crash-recovery/usr/include",
// CHECKYAML-NEXT: 'contents': [