Fix issue with svccommio incorrectly resetting console state in the move operator#14083
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Fix issue with svccommio incorrectly resetting console state in the move operator#14083
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…ove operator The ConsoleInput and ConsoleOutput classes used = default move operations, which caused the moved-from temporary's destructor to restore the original console mode (re-enabling ENABLE_PROCESSED_INPUT) after the object was moved into the std::optional. The fix uses emplace() to construct objects directly in-place, avoiding moves entirely. Move operations are now deleted to prevent future misuse.
benhillis
requested review from
Brian-Perkins,
OneBlue,
Copilot,
craigloewen-msft and
justus-camp-microsoft
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Pull request overview
This pull request fixes a bug where ConsoleInput and ConsoleOutput RAII classes incorrectly restored the original console mode due to default move operations. When objects were moved into std::optional, the moved-from object's destructor would reset the console state, causing the console mode to be incorrectly restored.
Changes:
- Deleted move constructors and move assignment operators for
ConsoleInputandConsoleOutputto prevent future misuse - Changed from factory pattern (static
Create()methods with private constructors) to direct construction with public constructors - Updated
SvcCommIoconstructor to useemplace()for in-place construction, avoiding move operations entirely
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| src/windows/common/svccommio.hpp | Made constructors public, deleted move operations, updated member initialization to use brace-initialization |
| src/windows/common/svccommio.cpp | Removed Create() factory methods, moved code page initialization to member initializer lists, updated SvcCommIo constructor to use emplace() for in-place construction |
OneBlue
approved these changes
Jan 20, 2026
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This was broken by #13843.
The ConsoleInput and ConsoleOutput classes used = default move operations, which caused the moved-from temporary's destructor to restore the original console mode (re-enabling ENABLE_PROCESSED_INPUT) after the object was moved into the std::optional. The fix uses emplace() to construct objects directly in-place, avoiding moves entirely. Move operations are now deleted to prevent future misuse.