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trivialfis · trivialfis · commit e139cbfa7fe6 · 2025-11-22T16:17:45.000+08:00
diff --git a/src/data/sparse_page_source.cc b/src/data/sparse_page_source.cc
@@ -36,7 +36,7 @@ std::string MakeCachePrefix(std::string cache_prefix) {
   cache_prefix = cache_prefix.empty() ? kDftname : cache_prefix;
   // Use the directory if one exists
   if (std::filesystem::is_directory(cache_prefix)) {
-    cache_prefix = std::filesystem::path{cache_prefix} / kDftname;  // NOLINT
+    cache_prefix = (std::filesystem::path{cache_prefix} / kDftname).string();  // NOLINT
   }
   // Avoid conflicts in distributed environments.
   if (collective::IsDistributed()) {

Original file line number	Diff line number	Diff line change
`@@ -36,7 +36,7 @@ std::string MakeCachePrefix(std::string cache_prefix) {`
`36`	`36`	`cache_prefix = cache_prefix.empty() ? kDftname : cache_prefix;`
`37`	`37`	`// Use the directory if one exists`
`38`	`38`	`if (std::filesystem::is_directory(cache_prefix)) {`
`39`		`- cache_prefix = std::filesystem::path{cache_prefix} / kDftname; // NOLINT`
	`39`	`+ cache_prefix = (std::filesystem::path{cache_prefix} / kDftname).string(); // NOLINT`
`40`	`40`	`}`
`41`	`41`	`// Avoid conflicts in distributed environments.`
`42`	`42`	`if (collective::IsDistributed()) {`