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rABC813bdb38c28a: [interpreter] Return `INTEGER_OVERFLOW` or `BAD_INTEGER_ENCODING` instead of…

Summary

Currently, the Script interpreter returns UNKNOWN when it encountered an integer overflow or a non-minimally encoded integer.

This has been a nuisance for new Script devs for a while, because "unknown error" sounds like the interpreter is broken, but it's actually expected behavior.

Also, this makes script number tests more brittle.

Instead, we return INTEGER_OVERFLOW if there's been any kind of integer overflow, e.g. when parsing operands, or when executing an operation like OP_ADD, OP_BIN2NUM, etc.

Test Plan

ninja check && ninja check-functional

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rABC Bitcoin ABC

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tobias_ruck created this revision.Aug 12 2025, 12:01

Herald added a reviewer: Restricted Project. · View Herald TranscriptAug 12 2025, 12:01

Harbormaster completed remote builds in B34128: Diff 55208.Aug 12 2025, 12:19

rebase onto master, fix comment

tobias_ruck mentioned this in D18469: [64-bit ints] Add activation logic.Aug 12 2025, 12:30

tobias_ruck published this revision for review.Aug 12 2025, 12:36

Fabien requested changes to this revision.Aug 12 2025, 13:27

Fabien added inline comments.

src/script/interpreter.cpp
212 ↗	(On Diff #55211)	This ensures we reset any previous script_error in case of success
src/script/interpreter.h
145–148 ↗	(On Diff #55211)	If it can't throw, let's mark it noexcept
src/script/script.h
215–225 ↗	(On Diff #55211)

This revision now requires changes to proceed.Aug 12 2025, 13:27

tobias_ruck added inline comments.Aug 12 2025, 13:34

src/script/interpreter.cpp
212 ↗	(On Diff #55211)	but that changes the behavior of RunNextOp, it previously did not do that. And a Script is not successful after just one opcode, it must run all of them to be successful

address review

Harbormaster completed remote builds in B34129: Diff 55211.Aug 12 2025, 13:37

tobias_ruck added a child revision: D18469: [64-bit ints] Add activation logic.Aug 12 2025, 13:42

Harbormaster completed remote builds in B34131: Diff 55214.Aug 12 2025, 13:49

tobias_ruck added inline comments.Aug 12 2025, 14:01

src/script/interpreter.h
146 ↗	(On Diff #55214)

remove redundant "will not throw" comment

Harbormaster completed remote builds in B34132: Diff 55215.Aug 12 2025, 14:17

Fabien accepted this revision.Aug 12 2025, 15:41

This revision is now accepted and ready to land.Aug 12 2025, 15:41

Closed by commit rABC813bdb38c28a: [interpreter] Return `INTEGER_OVERFLOW` or `BAD_INTEGER_ENCODING` instead of… (authored by tobias_ruck). · Explain WhyAug 12 2025, 21:08

This revision was automatically updated to reflect the committed changes.

tobias_ruck added a commit: rABC813bdb38c28a: [interpreter] Return `INTEGER_OVERFLOW` or `BAD_INTEGER_ENCODING` instead of….

[interpreter] Return `INTEGER_OVERFLOW` or `BAD_INTEGER_ENCODING` instead of UNKNOWN
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Diff 55223

src/iguana/tests/test_iguana.py

src/script/interpreter.h

src/script/interpreter.cpp

src/script/script.h

src/script/script_error.h

src/script/script_error.cpp

src/test/data/script_tests.json

src/test/fuzz/string.cpp

src/test/intmath_tests.cpp

src/test/monolith_opcodes_tests.cpp

src/test/script_tests.cpp

src/test/scriptinterpreter_tests.cpp

src/test/scriptnum_63bit_tests.cpp

src/test/scriptnum_tests.cpp

[interpreter] Return `INTEGER_OVERFLOW` or `BAD_INTEGER_ENCODING` instead of UNKNOWNClosedPublicActions

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Diff Detail

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Revision ContentsChangeset List

Diff 55223

src/iguana/tests/test_iguana.py

src/script/interpreter.h

src/script/interpreter.cpp

src/script/script.h

src/script/script_error.h

src/script/script_error.cpp

src/test/data/script_tests.json

src/test/fuzz/string.cpp

src/test/intmath_tests.cpp

src/test/monolith_opcodes_tests.cpp

src/test/script_tests.cpp

src/test/scriptinterpreter_tests.cpp

src/test/scriptnum_63bit_tests.cpp

src/test/scriptnum_tests.cpp

[interpreter] Return `INTEGER_OVERFLOW` or `BAD_INTEGER_ENCODING` instead of UNKNOWN
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