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On the importance of return codesOn the importance of return codesPosted Dec 3, 2009 10:27 UTC (Thu) by epa (subscriber, #39769)In reply to: On the importance of return codes by hppnq Parent article: On the importance of return codes
It seems only a relatively recent change to unsetenv() introduced a non-void return value, and that the loader code was not updated at the same time.I wonder whether linting the whole source tree with some kind of static analyser to warn about ignored return values would have caught this.
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On the importance of return codes Posted Dec 3, 2009 13:12 UTC (Thu) by NAR (subscriber, #1313) [Link]
I guess some static analyser could have warned about this. But I also guess that that warning would have been buried deep under heaps of false alarms. The Linux kernel NULL-pointer vulnerabilities were detected by the Stanford checker (if I remember correctly), it's just nobody cared to wade through all that stuff.
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