good first issuetoolchain
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Beschreibung
What did you do, or what's a simple way to reproduce the bug?
echo 'fn{p>fn()}' > /tmp/fuzz.carbon
bazel run -c dbg //toolchain -- compile --phase=parse /tmp/fuzz.carbon
What did you expect to happen?
Diagnostics reported, and completing without crashing.
What actually happened?
FATAL failure at toolchain/parse/parse.cpp:68: Invalid tree returned by Parse(): NodeId #nodeA couldn't be extracted as a FunctionDefinition. Trace:
Aggregate N6Carbon5Parse18FunctionDefinitionE: begin
Vector: begin
NodeIdInCategory Decl|Statement: kind ExprStatement consumed
NodeIdInCategory Decl|Statement error: kind IdentifierNameExpr doesn't match
Vector: end
NodeIdForKind error: wrong kind IdentifierNameExpr, expected FunctionDefinitionStart
Aggregate N6Carbon5Parse18FunctionDefinitionE: error
Error: IdentifierNameExpr node left unconsumed.
Any other information, logs, or outputs that you want to share?
The checking of the produce parse tree does not occur in an -c opt build.
This issue was found by fuzzing.