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fuzz: Exclude too expensive inputs in miniscript_string target

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MarcoFalke
2026-01-14 18:49:38 +01:00
parent fa90786478
commit fac70ea8b5
1 changed files with 4 additions and 0 deletions
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4
src/test/fuzz/miniscript.cpp
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@@ -11,6 +11,7 @@
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <test/fuzz/util/descriptor.h>
#include <util/strencodings.h>
#include <algorithm>
@@ -1234,9 +1235,12 @@ FUZZ_TARGET(miniscript_smart, .init = FuzzInitSmart)
/* Fuzz tests that test parsing from a string, and roundtripping via string. */
FUZZ_TARGET(miniscript_string, .init = FuzzInit)
{
constexpr auto is_too_expensive{[](std::span<const uint8_t> buf) { return HasTooManySubFrag(buf) || HasTooManyWrappers(buf); }};
if (buffer.empty()) return;
FuzzedDataProvider provider(buffer.data(), buffer.size());
auto str = provider.ConsumeBytesAsString(provider.remaining_bytes() - 1);
if (is_too_expensive(MakeUCharSpan(str))) return;
const ParserContext parser_ctx{(MsCtx)provider.ConsumeBool()};
auto parsed = miniscript::FromString(str, parser_ctx);
if (!parsed) return;