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| author | Sikkema, Isaac <sikkemaic@ornl.gov> | 2022-09-20 10:06:50 -0400 |
|---|---|---|
| committer | Sikkema, Isaac <sikkemaic@ornl.gov> | 2022-09-20 10:06:50 -0400 |
| commit | a2cb8a49498c9eab1cf5617135e7de0b3013843b (patch) | |
| tree | 8dd761f6a973a496a0b6192ed261eb3ddf52491c /compiler/rustc_serialize/src | |
| parent | 06139e57d5c0afb1e7e8d7815d742cd2da7d5dca (diff) | |
add comment explaining read permissions
Diffstat (limited to 'compiler/rustc_serialize/src')
| -rw-r--r-- | compiler/rustc_serialize/src/opaque.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_serialize/src/opaque.rs b/compiler/rustc_serialize/src/opaque.rs index f9edb073a2d..f35cc08f4fb 100644 --- a/compiler/rustc_serialize/src/opaque.rs +++ b/compiler/rustc_serialize/src/opaque.rs @@ -193,6 +193,8 @@ impl FileEncoder { // shaves an instruction off those code paths (on x86 at least). assert!(capacity <= usize::MAX - max_leb128_len()); + // Create the file for reading and writing, because some encoders do both + // (e.g. the metadata encoder when -Zmeta-stats is enabled) let file = File::options().read(true).write(true).create(true).truncate(true).open(path)?; Ok(FileEncoder { |