{"title":"C语言中非确定性和序列点的操作和公理语义","authors":"R. Krebbers","doi":"10.1145/2535838.2535878","DOIUrl":null,"url":null,"abstract":"The C11 standard of the C programming language does not specify the execution order of expressions. Besides, to make more effective optimizations possible (eg. delaying of side-effects and interleaving), it gives compilers in certain cases the freedom to use even more behaviors than just those of all execution orders. Widely used C compilers actually exploit this freedom given by the C standard for optimizations, so it should be taken seriously in formal verification. This paper presents an operational and axiomatic semantics (based on separation logic) for non-determinism and sequence points in C. We prove soundness of our axiomatic semantics with respect to our operational semantics. This proof has been fully formalized using the Coq proof assistant.","PeriodicalId":20683,"journal":{"name":"Proceedings of the 41st ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages","volume":"6 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2014-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"31","resultStr":"{\"title\":\"An operational and axiomatic semantics for non-determinism and sequence points in C\",\"authors\":\"R. Krebbers\",\"doi\":\"10.1145/2535838.2535878\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The C11 standard of the C programming language does not specify the execution order of expressions. Besides, to make more effective optimizations possible (eg. delaying of side-effects and interleaving), it gives compilers in certain cases the freedom to use even more behaviors than just those of all execution orders. Widely used C compilers actually exploit this freedom given by the C standard for optimizations, so it should be taken seriously in formal verification. This paper presents an operational and axiomatic semantics (based on separation logic) for non-determinism and sequence points in C. We prove soundness of our axiomatic semantics with respect to our operational semantics. This proof has been fully formalized using the Coq proof assistant.\",\"PeriodicalId\":20683,\"journal\":{\"name\":\"Proceedings of the 41st ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages\",\"volume\":\"6 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-01-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"31\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 41st ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1145/2535838.2535878\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 41st ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/2535838.2535878","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An operational and axiomatic semantics for non-determinism and sequence points in C
The C11 standard of the C programming language does not specify the execution order of expressions. Besides, to make more effective optimizations possible (eg. delaying of side-effects and interleaving), it gives compilers in certain cases the freedom to use even more behaviors than just those of all execution orders. Widely used C compilers actually exploit this freedom given by the C standard for optimizations, so it should be taken seriously in formal verification. This paper presents an operational and axiomatic semantics (based on separation logic) for non-determinism and sequence points in C. We prove soundness of our axiomatic semantics with respect to our operational semantics. This proof has been fully formalized using the Coq proof assistant.