llvm/llvm-project
Auf GitHub ansehenCreate a check that warns about using %p printf specifier
Open
#43.453 geöffnet am 21. Nov. 2019
bugzillaclang:static analyzerenhancementgood first issue
Repository-Metriken
- Stars
- (26.378 Stars)
- PR-Merge-Metriken
- (Durchschn. Merge 1T 2h) (1.000 gemergte PRs in 30 T)
Beschreibung
| Bugzilla Link | 44108 |
| Version | unspecified |
| OS | Windows NT |
Extended Description
Recently I ran into some surprising behavior surrounding the use of %p in a printf call. On Windows %p with a nullptr prints zeros, but on Linux %p with a nullptr prints "(nil)". This is surprising, but conforming to the standard which states (roughly) that the result of %p is implementation dependent.
Create a check that warns about the potential non-portable output when using %p in a printf or scanf specifier.