[Bug]: UnsupportedSpecializationException with mktime
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bug
- Dominant language
- Python
- Stars
- 1.6k
- Forks
- 155
- Avg merge
- 9h 42m
- Merged PRs (30d)
- 36
Description
Describe the bug
GraalPy crashes when running this fuzzed code:
from time import mktime
mktime(sum)
Operating system
Linux
CPU architecture
x86_64
GraalPy version
GraalPy 3.13.14 (Oracle GraalVM Native 25.3.4.1)
JDK version
No response
Context configuration
No response
Steps to reproduce
Snippet listed above
Expected behavior
No crash
Stack trace
Unexpected values provided for TimeModuleBuiltinsFactory.MkTimeNodeFactory.MkTimeNodeGen@35d04633: [<module 'time'>, <builtin-method 'PBuiltinFunction sum at 0x67d49dcf' of '<module 'builtins'>' objects>], [PythonModule,PBuiltinMethod]
com.oracle.truffle.api.dsl.UnsupportedSpecializationException: Unexpected values provided for TimeModuleBuiltinsFactory.MkTimeNodeFactory.MkTimeNodeGen@35d04633: [<module 'time'>, <builtin-method 'PBuiltinFunction sum at 0x67d49dcf' of '<module 'builtins'>' objects>], [PythonModule,PBuiltinMethod]
at org.graalvm.py/com.oracle.graal.python.builtins.modules.TimeModuleBuiltinsFactory$MkTimeNodeFactory$MkTimeNodeGen.execute(TimeModuleBuiltinsFactory.java:2072)
at org.graalvm.py/com.oracle.graal.python.nodes.function.builtins.BuiltinCallNode$BuiltinBinaryCallNode.execute(BuiltinCallNode.java:106)
at org.graalvm.py/com.oracle.graal.python.nodes.function.BuiltinFunctionRootNode.execute(BuiltinFunctionRootNode.java:337)
at org.graalvm.truffle.runtime/com.oracle.truffle.runtime.OptimizedCallTarget.executeRootNode(OptimizedCallTarget.java:808)
at org.graalvm.truffle.runtime/com.oracle.truffle.runtime.OptimizedCallTarget.profiledPERoot(OptimizedCallTarget.java:722)
at org.graalvm.truffle.runtime/com.oracle.truffle.runtime.OptimizedCallTarget.callBoundary(OptimizedCallTarget.java:641)
at org.graalvm.truffle.runtime.svm/com.oracle.svm.truffle.api.SubstrateOptimizedCallTarget.invokeCallBoundary(SubstrateOptimizedCallTarget.java:124)
at com.oracle.truffle.enterprise.svm/com.oracle.svm.enterprise.truffle.compiler.SubstrateEnterpriseOptimizedCallTarget.invokeCompiledAdapterOrCallBoundary(SubstrateEnterpriseOptimizedCallTarget.java:293)
at com.oracle.truffle.enterprise.svm/com.oracle.svm.enterprise.truffle.compiler.SubstrateEnterpriseOptimizedCallTarget.invokeFromInterpreter(SubstrateEnterpriseOptimizedCallTarget.java:269)
at com.oracle.truffle.enterprise.svm/com.oracle.svm.enterprise.truffle.compiler.SubstrateEnterpriseOptimizedCallTarget.doInvoke(SubstrateEnterpriseOptimizedCallTarget.java:255)
at org.graalvm.truffle.runtime/com.oracle.truffle.runtime.OptimizedCallTarget.callDirect(OptimizedCallTarget.java:573)
at org.graalvm.truffle.runtime/com.oracle.truffle.runtime.OptimizedCallTarget.call(OptimizedCallTarget.java:519)
at org.graalvm.truffle/com.oracle.truffle.api.nodes.IndirectCallNode$1.call(IndirectCallNode.java:96)
at org.graalvm.py/com.oracle.graal.python.nodes.call.CallDispatchers$SimpleIndirectInvokeNode.doIndirect(CallDispatchers.java:167)
at org.graalvm.py/com.oracle.graal.python.nodes.call.CallDispatchersFactory$SimpleIndirectInvokeNodeGen$Uncached.execute(CallDispatchersFactory.java:307)
at org.graalvm.py/com.oracle.graal.python.nodes.call.CallDispatchers$BuiltinMethodCachedCallNode.callBuiltinMethodMegamorphic(CallDispatchers.java:324)
at org.graalvm.py/com.oracle.graal.python.nodes.call.CallDispatchersFactory$BuiltinMethodCachedCallNodeGen$Uncached.execute(CallDispatchersFactory.java:1758)
at org.graalvm.py/com.oracle.graal.python.nodes.call.CallNode.builtinMethodCall(CallNode.java:187)
at org.graalvm.py/com.oracle.graal.python.nodes.call.CallNodeGen$Uncached.executeInternal(CallNodeGen.java:627)
at org.graalvm.py/com.oracle.graal.python.nodes.call.CallNode.execute(CallNode.java:128)
at org.graalvm.py/com.oracle.graal.python.nodes.call.special.CallUnaryMethodNode.call(CallUnaryMethodNode.java:180)
at org.graalvm.py/com.oracle.graal.python.nodes.bytecode_dsl.PBytecodeDSLRootNodeGen$CallUnaryMethod_Node.execute$uncached(PBytecodeDSLRootNodeGen.java)
at org.graalvm.py/com.oracle.graal.python.nodes.bytecode_dsl.PBytecodeDSLRootNodeGen$UncachedBytecodeNodeTailCall.handleCallUnaryMethod_(PBytecodeDSLRootNodeGen.java:37850)
at org.graalvm.py/com.oracle.graal.python.nodes.bytecode_dsl.PBytecodeDSLRootNodeGen$UncachedBytecodeNodeTailCall.__stub_handleCallUnaryMethod_(PBytecodeDSLRootNodeGen.java:0)
at org.graalvm.py/com.oracle.graal.python.nodes.bytecode_dsl.PBytecodeDSLRootNodeGen$UncachedBytecodeNodeTailCall.continueAt(PBytecodeDSLRootNodeGen.java:35093)
at org.graalvm.py/com.oracle.graal.python.nodes.bytecode_dsl.PBytecodeDSLRootNodeGen.continueAt(PBytecodeDSLRootNodeGen.java:3501)
at org.graalvm.py/com.oracle.graal.python.nodes.bytecode_dsl.PBytecodeDSLRootNodeGen.execute(PBytecodeDSLRootNodeGen.java:3493)
[...snip...]
Additional context
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the reported Python snippet on Linux with GraalPy 3.13.14 and trace the failure from TimeModuleBuiltinsFactory.MkTimeNodeFactory.MkTimeNodeGen in the stack trace. Inspect the time module's mktime entry point and add coverage for the shown argument; done means the snippet reports a normal Python error or result instead of crashing with UnsupportedSpecializationException.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Clearly specified
- Newbie friendliness
- 72/100