--- /dev/null
+--TEST--
+Bug #53512 (NumberFormatter::setSymbol crash on bogus $attr values)
+--SKIPIF--
+<?php if( !extension_loaded( 'intl' ) ) print 'skip'; ?>
+--FILE--
+<?php
+
+$badvals = array(4294901761, 2147483648, -2147483648, -1);
+
+foreach ($badvals as $val) {
+ $x = numfmt_create("en", NumberFormatter::PATTERN_DECIMAL);
+ var_dump(numfmt_set_symbol($x, $val, ""));
+ var_dump(intl_get_error_message());
+}
+
+?>
+--EXPECTF--
+bool(false)
+string(65) "numfmt_set_symbol: invalid symbol value: U_ILLEGAL_ARGUMENT_ERROR"
+bool(false)
+string(65) "numfmt_set_symbol: invalid symbol value: U_ILLEGAL_ARGUMENT_ERROR"
+bool(false)
+string(65) "numfmt_set_symbol: invalid symbol value: U_ILLEGAL_ARGUMENT_ERROR"
+bool(false)
+string(65) "numfmt_set_symbol: invalid symbol value: U_ILLEGAL_ARGUMENT_ERROR"