diff options
| -rw-r--r-- | libbutl/fdstream.cxx | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/libbutl/fdstream.cxx b/libbutl/fdstream.cxx index 053ef13..7d1e755 100644 --- a/libbutl/fdstream.cxx +++ b/libbutl/fdstream.cxx @@ -791,7 +791,15 @@ namespace butl ifdstream:: ifdstream (const char* f, fdopen_mode m, iostate e) - : ifdstream (fdopen (f, m | fdopen_mode::in), e) + : ifdstream ( + fdopen (f, + // If fdopen_mode::in is not specified, then emulate the + // ios::in semantics. + // + (m & fdopen_mode::in) == fdopen_mode::in + ? m + : m | translate_mode (in)), + e) { } @@ -892,7 +900,15 @@ namespace butl ofdstream:: ofdstream (const char* f, fdopen_mode m, iostate e) - : ofdstream (fdopen (f, m | fdopen_mode::out), e) + : ofdstream ( + fdopen (f, + // If fdopen_mode::out is not specified, then emulate the + // ios::out semantics. + // + (m & fdopen_mode::out) == fdopen_mode::out + ? m + : m | translate_mode (out)), + e) { } |