Do not use the path variable in switch_dir() in case of error#534
Merged
millert merged 1 commit intosudo-project:mainfrom May 4, 2026
Merged
Do not use the path variable in switch_dir() in case of error#534millert merged 1 commit intosudo-project:mainfrom
millert merged 1 commit intosudo-project:mainfrom
Conversation
In the function switch_dir() the path variable is initialized to NULL. The read_dir_files() is invoked to assign it a value. When this function finishes with an error (goes to oom or bad), no value is assigned to the parameter *pathsp and SIZE_MAX is returned. SIZE_MAX is the equivalent of -1, but is unsigned, so it is a very high positive value. Function switch_dir() will check that the result is greater than 0, which will be in case of error because the variable count and the result value are both unsigned, although the equivalent of -1. So we need to check for this particular value explicitly.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
In the function switch_dir() the path variable is initialized to NULL.
The read_dir_files() is invoked to assign it a value. When this function finishes with an error (goes to oom or bad), no value is assigned to the parameter *pathsp and SIZE_MAX is returned. SIZE_MAX is the equivalent of -1, but is unsigned, so it is a very high positive value.
Function switch_dir() will check that the result is greater than 0, which will be in case of error because the variable count and the result value are both unsigned, although the equivalent of -1. So we need to check for this particular value explicitly.
Resolves: #533