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Strings play many roles in programming because they often contain complex and semantically rich information. For example, programmers use strings to filter inputs via regular expression matching, to express the names of program elements access through some form of reflection, to embed code written in another formal language, and to assemble textual output produced by a program. The omnipresence of strings leads to a wide range of mistakes that developers may make, yet little is currently known about these mistakes.
The lack of knowledge about string-related bugs leads to developers repeating the same mistakes again and again, and to poor support for finding and fixing such bugs. This paper presents the first empirical study of the root causes, consequences, and other properties of string-related bugs. We systematically study a diverse set of projects written in JavaScript, a language where strings play a particularly important role.
Our findings include i that many string-related mistakes are caused by a recurring set of root cause patterns, such as incorrect string literals and regular expressions, ii that string-related bugs have a diverse set of consequences, including incorrect output or silent omission of expected behavior, iii that string-related bugs occur across all parts of applications, including the core components, and iv that almost none of these bugs are detected by existing static analyzers.
Our findings not only show the importance and prevalence of string-related bugs, but they help developers to avoid common mistakes and tool builders to tackle the challenge of finding and fixing string-related bugs. Toggle navigation. Sign in Sign up. Who Aryaz Eghbali , Michael Pradel. Program Display Configuration.
Time Zone. Time Band. By setting a time band, the program will dim events that are outside this time window. This is useful for virtual conferences with a continuous program with repeated sessions. The time band will also limit the events that are included in the personal iCalendar subscription service. Display full program Specify a time band -. Abstract Strings play many roles in programming because they often contain complex and semantically rich information.