chore(3p/nix): apply google-readability-casting r/1619

Command run: jq <compile_commands.json -r 'map(.file)|.[]' | grep -v '/generated/' | parallel clang-tidy -p compile_commands.json -checks=-*,google-readability-casting --fix

Manual fixes applied in src/nix-env/nix-env.cc, src/libstore/store-api.cc

Change-Id: I406b4be9368c557ca59329bf6f7002704e955f8d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1557
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
Reviewed-by: tazjin <mail@tazj.in>

1 files changed, 4 insertions, 2 deletions

diff --git a/third_party/nix/src/libstore/remote-fs-accessor.cc b/third_party/nix/src/libstore/remote-fs-accessor.cc
index 2917f01f7939..d5b20288479c 100644
--- a/third_party/nix/src/libstore/remote-fs-accessor.cc
+++ b/third_party/nix/src/libstore/remote-fs-accessor.cc
@@ -75,12 +75,14 @@ std::pair<ref<FSAccessor>, Path> RemoteFSAccessor::fetch(const Path& path_) {
               throw SysError("opening NAR cache file '%s'", cacheFile);
             }
 
-            if (lseek(fd.get(), offset, SEEK_SET) != (off_t)offset) {
+            if (lseek(fd.get(), offset, SEEK_SET) !=
+                static_cast<off_t>(offset)) {
               throw SysError("seeking in '%s'", cacheFile);
             }
 
             std::string buf(length, 0);
-            readFull(fd.get(), (unsigned char*)buf.data(), length);
+            readFull(fd.get(), reinterpret_cast<unsigned char*>(buf.data()),
+                     length);
 
             return buf;
           });