D12892.diff
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D12892.diff
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	diff --git a/src/lint/linter/ArcanistXHPASTLinter.php b/src/lint/linter/ArcanistXHPASTLinter.php
	--- a/src/lint/linter/ArcanistXHPASTLinter.php
	+++ b/src/lint/linter/ArcanistXHPASTLinter.php
	@@ -4144,9 +4144,13 @@
	continue;
	}

	- $throws = $method
	- ->getChildOfType(5, 'n_STATEMENT_LIST')
	- ->selectDescendantsOfType('n_THROW');
	+ $statements = $method->getChildByIndex(5);
	+
	+ if ($statements->getTypeName() != 'n_STATEMENT_LIST') {
	+ continue;
	+ }
	+
	+ $throws = $statements->selectDescendantsOfType('n_THROW');

	foreach ($throws as $throw) {
	$this->raiseLintAtNode(
	diff --git a/src/lint/linter/__tests__/xhpast/tostring-exception.lint-test b/src/lint/linter/__tests__/xhpast/tostring-exception.lint-test
	--- a/src/lint/linter/__tests__/xhpast/tostring-exception.lint-test
	+++ b/src/lint/linter/__tests__/xhpast/tostring-exception.lint-test
	@@ -14,5 +14,13 @@
	return 'Success';
	}
	}
	+
	+interface SomeInterface {
	+ public function __toString();
	+}
	+
	+abstract class SomeAbstractClass {
	+ abstract public function __toString();
	+}
	~~~~~~~~~~
	error:5:7