LC

Implement Error Recovery: Continue Parsing After Syntax Error

hard5/8

Function Declarations Build a Pratt Parser (Top-Down Operator Precedence)

Language

Compiler

2.0s Limit 256MB

Implementation

Implement panic mode error recovery in your recursive descent parser.

Requirements:

Add synchronization points (statement terminators, block endings)
Detect syntax errors and report them
Skip tokens until sync point is found
Continue parsing after error
Report multiple errors in one parse
Test with various malformed inputs
Ensure parser doesn't crash or hang

Why This Matters

When you type broken code in VS Code, clangd and TypeScript's compiler still show you every other error in the file — that is panic-mode recovery with synchronization tokens, exactly what you are building. Production compilers treat error recovery as a first-class feature because developers compile broken code far more often than correct code.

Hints

0 / 3 revealed

Validation Suite

main.c

Workspace 1.0