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chore: dump ast within error when reach undefined state #18668

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chore: dump ast within error when reach undefined state #18668

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6 changes: 6 additions & 0 deletions Zend/zend_compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -11608,6 +11608,12 @@ static void zend_compile_expr_inner(znode *result, zend_ast *ast) /* {{{ */
zend_compile_match(result, ast);
return;
default:
zend_error(
E_ERROR,
"Unknown AST node kind %d. Expression: \"%s\".",
ast->kind,
ZSTR_VAL(zend_ast_export("", ast, ""))
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This means that zend_ast_export must be functional, which is not given when the AST is broken so that PHP is unable to handle it.

The included gdb script is capable of pretty-printing the AST. I suggest debugging this situation with gdb.

);
ZEND_ASSERT(0 /* not supported */);
}
}
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