Java bug finders perform static analysis to find implementation mistakes that can lead to exploits and failures; Java compilers perform static analysis for optimization. If Java programs contain foreign function calls to C libraries, however, static analysis is forced to make either optimistic or pessimistic assumptions about the foreign function calls, since models of the C libraries are typically not available. We propose ILEA (stands for Inter-LanguagE Analysis), which is a framework that enables existing Java analyses to understand the behavior of C code. Our framework includes: (1) a novel specification language, which extends the Java Virtual Machine Language (JVML) with a few primitives that approximate the effects that the C code might have; (2) an automatic specification extractor, which builds models of the C code. Comparing to other possible specification languages, our language is expressive, yet facilitates construction of automatic specification extractors. Further...