BackendZ3: Bypass integer string conversion limit. #577
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CPython 3.11 introduced integer string conversion length limit (see https://docs.python.org/3/library/stdtypes.html#integer-string-conversion-length-limitation). We determined that this security protection does not apply to the threat model that angr would face, and in fact, causes issues when we deal with really long strings and integers. Therefore, we bypass the integer conversion limit in this PR. We also monkey-patch the Z3 Python binding so that it can accept long integers in constraints.
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CPython 3.11 introduced integer string conversion length limit (see https://docs.python.org/3/library/stdtypes.html#integer-string-conversion-length-limitation). We determined that this security protection does not apply to the threat model that angr would face, and in fact, causes issues when we deal with really long strings and integers. Therefore, we bypass the integer conversion limit in this PR.
We also monkey-patch the Z3 Python binding so that it can accept long integers in constraints.