CodeQL library for Python
codeql/python-all 3.0.1-dev (changelog, source)
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Predicate SsaComputeImpl::AdjacentUsesImpl::defSourceUseRank

Holds if rankix is the rank the index i at which there is an SSA definition or explicit use of v in the basic block b.

Import path

import semmle.python.essa.SsaCompute
predicate defSourceUseRank(SsaSourceVariable v, BasicBlock b, int rankix, int i)