diff --git a/services/incremental/BinderIncrementalService.cpp b/services/incremental/BinderIncrementalService.cpp
index 2f031bf..45ca5cd 100644
--- a/services/incremental/BinderIncrementalService.cpp
+++ b/services/incremental/BinderIncrementalService.cpp
@@ -216,7 +216,10 @@
     if (!content) {
         return {};
     }
-    return {content->data(), (int)content->size()};
+    // TODO(b/175635923): Replace with {content->data(), content->size()} after libc++ is upgraded.
+    // The type of the second std::span ctor param changed from ptrdiff_t to size_t between the old
+    // libc++ and the finalized C++20.
+    return std::span<const uint8_t>(content->data(), content->size());
 }
 
 binder::Status BinderIncrementalService::makeFile(
diff --git a/services/incremental/IncrementalService.cpp b/services/incremental/IncrementalService.cpp
index a49577b..6196c49 100644
--- a/services/incremental/IncrementalService.cpp
+++ b/services/incremental/IncrementalService.cpp
@@ -1166,11 +1166,11 @@
     if (!ifs) {
         return -EINVAL;
     }
-    if (data.size() > params.size) {
+    if ((IncFsSize)data.size() > params.size) {
         LOG(ERROR) << "Bad data size - bigger than file size";
         return -EINVAL;
     }
-    if (!data.empty() && data.size() != params.size) {
+    if (!data.empty() && (IncFsSize)data.size() != params.size) {
         // Writing a page is an irreversible operation, and it can't be updated with additional
         // data later. Check that the last written page is complete, or we may break the file.
         if (!isPageAligned(data.size())) {
@@ -3188,7 +3188,7 @@
 }
 
 FileId IncrementalService::idFromMetadata(std::span<const uint8_t> metadata) {
-    return IncFs_FileIdFromMetadata({(const char*)metadata.data(), metadata.size()});
+    return IncFs_FileIdFromMetadata({(const char*)metadata.data(), (IncFsSize)metadata.size()});
 }
 
 } // namespace android::incremental