/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 8029383
 * @summary stack overflow if callee is marked for deoptimization causes crash
 * @run main/othervm -XX:TieredStopAtLevel=1 -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,StackOverflowGuardPagesOff::m1 -XX:CompileCommand=exclude,StackOverflowGuardPagesOff::m2 -Xss256K -XX:-UseOnStackReplacement StackOverflowGuardPagesOff
 *
 */

// This test calls m2 recursively until a stack overflow. Then calls
// m3 that calls m1. m1 triggers B's class loading, as a result m1 and
// m3 needs to be deoptimized. Deoptimization of m1 causes a stack
// overflow exception to be thrown which is propagated to m3 in the
// deopt blob. If the guard pages are no enabled, the stack bang in
// the deopt blob triggers a crash.
public class StackOverflowGuardPagesOff {

    static class A {
        void m() {}
    }

    static class B extends A {
        void m() {}
    }

    static void m1(boolean deopt, A a) {
        long l0, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12,
        l13, l14, l15, l16, l17, l18, l19, l20, l21, l22, l23, l24,
        l25, l26, l27, l28, l29, l30, l31, l32, l33, l34, l35, l36,
        l37, l38, l39, l40, l41, l42, l43, l44, l45, l46, l47, l48,
        l49, l50, l51, l52, l53, l54, l55, l56, l57, l58, l59, l60,
        l61, l62, l63, l64, l65, l66, l67, l68, l69, l70, l71, l72,
        l73, l74, l75, l76, l77, l78, l79, l80, l81, l82, l83, l84,
        l85, l86, l87, l88, l89, l90, l91, l92, l93, l94, l95, l96,
        l97, l98, l99, l100, l101, l102, l103, l104, l105, l106, l107,
        l108, l109, l110, l111, l112, l113, l114, l115, l116, l117,
        l118, l119, l120, l121, l122, l123, l124, l125, l126, l127,
        l128, l129, l130, l131, l132, l133, l134, l135, l136, l137,
        l138, l139, l140, l141, l142, l143, l144, l145, l146, l147,
        l148, l149, l150, l151, l152, l153, l154, l155, l156, l157,
        l158, l159, l160, l161, l162, l163, l164, l165, l166, l167,
        l168, l169, l170, l171, l172, l173, l174, l175, l176, l177,
        l178, l179, l180, l181, l182, l183, l184, l185, l186, l187,
        l188, l189, l190, l191, l192, l193, l194, l195, l196, l197,
        l198, l199, l200, l201, l202, l203, l204, l205, l206, l207,
        l208, l209, l210, l211, l212, l213, l214, l215, l216, l217,
        l218, l219, l220, l221, l222, l223, l224, l225, l226, l227,
        l228, l229, l230, l231, l232, l233, l234, l235, l236, l237,
        l238, l239, l240, l241, l242, l243, l244, l245, l246, l247,
        l248, l249, l250, l251, l252, l253, l254, l255, l256, l257,
        l258, l259, l260, l261, l262, l263, l264, l265, l266, l267,
        l268, l269, l270, l271, l272, l273, l274, l275, l276, l277,
        l278, l279, l280, l281, l282, l283, l284, l285, l286, l287,
        l288, l289, l290, l291, l292, l293, l294, l295, l296, l297,
        l298, l299, l300, l301, l302, l303, l304, l305, l306, l307,
        l308, l309, l310, l311, l312, l313, l314, l315, l316, l317,
        l318, l319, l320, l321, l322, l323, l324, l325, l326, l327,
        l328, l329, l330, l331, l332, l333, l334, l335, l336, l337,
        l338, l339, l340, l341, l342, l343, l344, l345, l346, l347,
        l348, l349, l350, l351, l352, l353, l354, l355, l356, l357,
        l358, l359, l360, l361, l362, l363, l364, l365, l366, l367,
        l368, l369, l370, l371, l372, l373, l374, l375, l376, l377,
        l378, l379, l380, l381, l382, l383, l384, l385, l386, l387,
        l388, l389, l390, l391, l392, l393, l394, l395, l396, l397,
        l398, l399, l400, l401, l402, l403, l404, l405, l406, l407,
        l408, l409, l410, l411, l412, l413, l414, l415, l416, l417,
        l418, l419, l420, l421, l422, l423, l424, l425, l426, l427,
        l428, l429, l430, l431, l432, l433, l434, l435, l436, l437,
        l438, l439, l440, l441, l442, l443, l444, l445, l446, l447,
        l448, l449, l450, l451, l452, l453, l454, l455, l456, l457,
        l458, l459, l460, l461, l462, l463, l464, l465, l466, l467,
        l468, l469, l470, l471, l472, l473, l474, l475, l476, l477,
        l478, l479, l480, l481, l482, l483, l484, l485, l486, l487,
        l488, l489, l490, l491, l492, l493, l494, l495, l496, l497,
        l498, l499, l500, l501, l502, l503, l504, l505, l506, l507,
        l508, l509, l510, l511;

        long ll0, ll1, ll2, ll3, ll4, ll5, ll6, ll7, ll8, ll9, ll10, ll11, ll12,
        ll13, ll14, ll15, ll16, ll17, ll18, ll19, ll20, ll21, ll22, ll23, ll24,
        ll25, ll26, ll27, ll28, ll29, ll30, ll31, ll32, ll33, ll34, ll35, ll36,
        ll37, ll38, ll39, ll40, ll41, ll42, ll43, ll44, ll45, ll46, ll47, ll48,
        ll49, ll50, ll51, ll52, ll53, ll54, ll55, ll56, ll57, ll58, ll59, ll60,
        ll61, ll62, ll63, ll64, ll65, ll66, ll67, ll68, ll69, ll70, ll71, ll72,
        ll73, ll74, ll75, ll76, ll77, ll78, ll79, ll80, ll81, ll82, ll83, ll84,
        ll85, ll86, ll87, ll88, ll89, ll90, ll91, ll92, ll93, ll94, ll95, ll96,
        ll97, ll98, ll99, ll100, ll101, ll102, ll103, ll104, ll105, ll106, ll107,
        ll108, ll109, ll110, ll111, ll112, ll113, ll114, ll115, ll116, ll117,
        ll118, ll119, ll120, ll121, ll122, ll123, ll124, ll125, ll126, ll127,
        ll128, ll129, ll130, ll131, ll132, ll133, ll134, ll135, ll136, ll137,
        ll138, ll139, ll140, ll141, ll142, ll143, ll144, ll145, ll146, ll147,
        ll148, ll149, ll150, ll151, ll152, ll153, ll154, ll155, ll156, ll157,
        ll158, ll159, ll160, ll161, ll162, ll163, ll164, ll165, ll166, ll167,
        ll168, ll169, ll170, ll171, ll172, ll173, ll174, ll175, ll176, ll177,
        ll178, ll179, ll180, ll181, ll182, ll183, ll184, ll185, ll186, ll187,
        ll188, ll189, ll190, ll191, ll192, ll193, ll194, ll195, ll196, ll197,
        ll198, ll199, ll200, ll201, ll202, ll203, ll204, ll205, ll206, ll207,
        ll208, ll209, ll210, ll211, ll212, ll213, ll214, ll215, ll216, ll217,
        ll218, ll219, ll220, ll221, ll222, ll223, ll224, ll225, ll226, ll227,
        ll228, ll229, ll230, ll231, ll232, ll233, ll234, ll235, ll236, ll237,
        ll238, ll239, ll240, ll241, ll242, ll243, ll244, ll245, ll246, ll247,
        ll248, ll249, ll250, ll251, ll252, ll253, ll254, ll255, ll256, ll257,
        ll258, ll259, ll260, ll261, ll262, ll263, ll264, ll265, ll266, ll267,
        ll268, ll269, ll270, ll271, ll272, ll273, ll274, ll275, ll276, ll277,
        ll278, ll279, ll280, ll281, ll282, ll283, ll284, ll285, ll286, ll287,
        ll288, ll289, ll290, ll291, ll292, ll293, ll294, ll295, ll296, ll297,
        ll298, ll299, ll300, ll301, ll302, ll303, ll304, ll305, ll306, ll307,
        ll308, ll309, ll310, ll311, ll312, ll313, ll314, ll315, ll316, ll317,
        ll318, ll319, ll320, ll321, ll322, ll323, ll324, ll325, ll326, ll327,
        ll328, ll329, ll330, ll331, ll332, ll333, ll334, ll335, ll336, ll337,
        ll338, ll339, ll340, ll341, ll342, ll343, ll344, ll345, ll346, ll347,
        ll348, ll349, ll350, ll351, ll352, ll353, ll354, ll355, ll356, ll357,
        ll358, ll359, ll360, ll361, ll362, ll363, ll364, ll365, ll366, ll367,
        ll368, ll369, ll370, ll371, ll372, ll373, ll374, ll375, ll376, ll377,
        ll378, ll379, ll380, ll381, ll382, ll383, ll384, ll385, ll386, ll387,
        ll388, ll389, ll390, ll391, ll392, ll393, ll394, ll395, ll396, ll397,
        ll398, ll399, ll400, ll401, ll402, ll403, ll404, ll405, ll406, ll407,
        ll408, ll409, ll410, ll411, ll412, ll413, ll414, ll415, ll416, ll417,
        ll418, ll419, ll420, ll421, ll422, ll423, ll424, ll425, ll426, ll427,
        ll428, ll429, ll430, ll431, ll432, ll433, ll434, ll435, ll436, ll437,
        ll438, ll439, ll440, ll441, ll442, ll443, ll444, ll445, ll446, ll447,
        ll448, ll449, ll450, ll451, ll452, ll453, ll454, ll455, ll456, ll457,
        ll458, ll459, ll460, ll461, ll462, ll463, ll464, ll465, ll466, ll467,
        ll468, ll469, ll470, ll471, ll472, ll473, ll474, ll475, ll476, ll477,
        ll478, ll479, ll480, ll481, ll482, ll483, ll484, ll485, ll486, ll487,
        ll488, ll489, ll490, ll491, ll492, ll493, ll494, ll495, ll496, ll497,
        ll498, ll499, ll500, ll501, ll502, ll503, ll504, ll505, ll506, ll507,
        ll508, ll509, ll510, ll511;

        a.m();

        if (deopt) {
            do_load = true;
            while (!load_done);
        }
    }

    static void m2(boolean deopt, A a) {
        long l0, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12,
        l13, l14, l15, l16, l17, l18, l19, l20, l21, l22, l23, l24,
        l25, l26, l27, l28, l29, l30, l31, l32, l33, l34, l35, l36,
        l37, l38, l39, l40, l41, l42, l43, l44, l45, l46, l47, l48,
        l49, l50, l51, l52, l53, l54, l55, l56, l57, l58, l59, l60,
        l61, l62, l63, l64, l65, l66, l67, l68, l69, l70, l71, l72,
        l73, l74, l75, l76, l77, l78, l79, l80, l81, l82, l83, l84,
        l85, l86, l87, l88, l89, l90, l91, l92, l93, l94, l95, l96,
        l97, l98, l99, l100, l101, l102, l103, l104, l105, l106, l107,
        l108, l109, l110, l111, l112, l113, l114, l115, l116, l117,
        l118, l119, l120, l121, l122, l123, l124, l125, l126, l127,
        l128, l129, l130, l131, l132, l133, l134, l135, l136, l137,
        l138, l139, l140, l141, l142, l143, l144, l145, l146, l147,
        l148, l149, l150, l151, l152, l153, l154, l155, l156, l157,
        l158, l159, l160, l161, l162, l163, l164, l165, l166, l167,
        l168, l169, l170, l171, l172, l173, l174, l175, l176, l177,
        l178, l179, l180, l181, l182, l183, l184, l185, l186, l187,
        l188, l189, l190, l191, l192, l193, l194, l195, l196, l197,
        l198, l199, l200, l201, l202, l203, l204, l205, l206, l207,
        l208, l209, l210, l211, l212, l213, l214, l215, l216, l217,
        l218, l219, l220, l221, l222, l223, l224, l225, l226, l227,
        l228, l229, l230, l231, l232, l233, l234, l235, l236, l237,
        l238, l239, l240, l241, l242, l243, l244, l245, l246, l247,
        l248, l249, l250, l251, l252, l253, l254, l255, l256, l257,
        l258, l259, l260, l261, l262, l263, l264, l265, l266, l267,
        l268, l269, l270, l271, l272, l273, l274, l275, l276, l277,
        l278, l279, l280, l281, l282, l283, l284, l285, l286, l287,
        l288, l289, l290, l291, l292, l293, l294, l295, l296, l297,
        l298, l299, l300, l301, l302, l303, l304, l305, l306, l307,
        l308, l309, l310, l311, l312, l313, l314, l315, l316, l317,
        l318, l319, l320, l321, l322, l323, l324, l325, l326, l327,
        l328, l329, l330, l331, l332, l333, l334, l335, l336, l337,
        l338, l339, l340, l341, l342, l343, l344, l345, l346, l347,
        l348, l349, l350, l351, l352, l353, l354, l355, l356, l357,
        l358, l359, l360, l361, l362, l363, l364, l365, l366, l367,
        l368, l369, l370, l371, l372, l373, l374, l375, l376, l377,
        l378, l379, l380, l381, l382, l383, l384, l385, l386, l387,
        l388, l389, l390, l391, l392, l393, l394, l395, l396, l397,
        l398, l399, l400, l401, l402, l403, l404, l405, l406, l407,
        l408, l409, l410, l411, l412, l413, l414, l415, l416, l417,
        l418, l419, l420, l421, l422, l423, l424, l425, l426, l427,
        l428, l429, l430, l431, l432, l433, l434, l435, l436, l437,
        l438, l439, l440, l441, l442, l443, l444, l445, l446, l447,
        l448, l449, l450, l451, l452, l453, l454, l455, l456, l457,
        l458, l459, l460, l461, l462, l463, l464, l465, l466, l467,
        l468, l469, l470, l471, l472, l473, l474, l475, l476, l477,
        l478, l479, l480, l481, l482, l483, l484, l485, l486, l487,
        l488, l489, l490, l491, l492, l493, l494, l495, l496, l497,
        l498, l499, l500, l501, l502, l503, l504, l505, l506, l507,
        l508, l509, l510, l511;

        try {
            m2(deopt, a);
        } catch (StackOverflowError e) {
            m3(deopt, a);
        }
    }

    static void m3(boolean deopt, A a) {
        long l0, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12,
        l13, l14, l15, l16, l17, l18, l19, l20, l21, l22, l23, l24,
        l25, l26, l27, l28, l29, l30, l31, l32, l33, l34, l35, l36,
        l37, l38, l39, l40, l41, l42, l43, l44, l45, l46, l47, l48,
        l49, l50, l51, l52, l53, l54, l55, l56, l57, l58, l59, l60,
        l61, l62, l63, l64, l65, l66, l67, l68, l69, l70, l71, l72,
        l73, l74, l75, l76, l77, l78, l79, l80, l81, l82, l83, l84,
        l85, l86, l87, l88, l89, l90, l91, l92, l93, l94, l95, l96,
        l97, l98, l99, l100, l101, l102, l103, l104, l105, l106, l107,
        l108, l109, l110, l111, l112, l113, l114, l115, l116, l117,
        l118, l119, l120, l121, l122, l123, l124, l125, l126, l127,
        l128, l129, l130, l131, l132, l133, l134, l135, l136, l137,
        l138, l139, l140, l141, l142, l143, l144, l145, l146, l147,
        l148, l149, l150, l151, l152, l153, l154, l155, l156, l157,
        l158, l159, l160, l161, l162, l163, l164, l165, l166, l167,
        l168, l169, l170, l171, l172, l173, l174, l175, l176, l177,
        l178, l179, l180, l181, l182, l183, l184, l185, l186, l187,
        l188, l189, l190, l191, l192, l193, l194, l195, l196, l197,
        l198, l199, l200, l201, l202, l203, l204, l205, l206, l207,
        l208, l209, l210, l211, l212, l213, l214, l215, l216, l217,
        l218, l219, l220, l221, l222, l223, l224, l225, l226, l227,
        l228, l229, l230, l231, l232, l233, l234, l235, l236, l237,
        l238, l239, l240, l241, l242, l243, l244, l245, l246, l247,
        l248, l249, l250, l251, l252, l253, l254, l255, l256, l257,
        l258, l259, l260, l261, l262, l263, l264, l265, l266, l267,
        l268, l269, l270, l271, l272, l273, l274, l275, l276, l277,
        l278, l279, l280, l281, l282, l283, l284, l285, l286, l287,
        l288, l289, l290, l291, l292, l293, l294, l295, l296, l297,
        l298, l299, l300, l301, l302, l303, l304, l305, l306, l307,
        l308, l309, l310, l311, l312, l313, l314, l315, l316, l317,
        l318, l319, l320, l321, l322, l323, l324, l325, l326, l327,
        l328, l329, l330, l331, l332, l333, l334, l335, l336, l337,
        l338, l339, l340, l341, l342, l343, l344, l345, l346, l347,
        l348, l349, l350, l351, l352, l353, l354, l355, l356, l357,
        l358, l359, l360, l361, l362, l363, l364, l365, l366, l367,
        l368, l369, l370, l371, l372, l373, l374, l375, l376, l377,
        l378, l379, l380, l381, l382, l383, l384, l385, l386, l387,
        l388, l389, l390, l391, l392, l393, l394, l395, l396, l397,
        l398, l399, l400, l401, l402, l403, l404, l405, l406, l407,
        l408, l409, l410, l411, l412, l413, l414, l415, l416, l417,
        l418, l419, l420, l421, l422, l423, l424, l425, l426, l427,
        l428, l429, l430, l431, l432, l433, l434, l435, l436, l437,
        l438, l439, l440, l441, l442, l443, l444, l445, l446, l447,
        l448, l449, l450, l451, l452, l453, l454, l455, l456, l457,
        l458, l459, l460, l461, l462, l463, l464, l465, l466, l467,
        l468, l469, l470, l471, l472, l473, l474, l475, l476, l477,
        l478, l479, l480, l481, l482, l483, l484, l485, l486, l487,
        l488, l489, l490, l491, l492, l493, l494, l495, l496, l497,
        l498, l499, l500, l501, l502, l503, l504, l505, l506, l507,
        l508, l509, l510, l511;

        long ll0, ll1, ll2, ll3, ll4, ll5, ll6, ll7, ll8, ll9, ll10, ll11, ll12,
        ll13, ll14, ll15, ll16, ll17, ll18, ll19, ll20, ll21, ll22, ll23, ll24,
        ll25, ll26, ll27, ll28, ll29, ll30, ll31, ll32, ll33, ll34, ll35, ll36,
        ll37, ll38, ll39, ll40, ll41, ll42, ll43, ll44, ll45, ll46, ll47, ll48,
        ll49, ll50, ll51, ll52, ll53, ll54, ll55, ll56, ll57, ll58, ll59, ll60,
        ll61, ll62, ll63, ll64, ll65, ll66, ll67, ll68, ll69, ll70, ll71, ll72,
        ll73, ll74, ll75, ll76, ll77, ll78, ll79, ll80, ll81, ll82, ll83, ll84,
        ll85, ll86, ll87, ll88, ll89, ll90, ll91, ll92, ll93, ll94, ll95, ll96,
        ll97, ll98, ll99, ll100, ll101, ll102, ll103, ll104, ll105, ll106, ll107,
        ll108, ll109, ll110, ll111, ll112, ll113, ll114, ll115, ll116, ll117,
        ll118, ll119, ll120, ll121, ll122, ll123, ll124, ll125, ll126, ll127,
        ll128, ll129, ll130, ll131, ll132, ll133, ll134, ll135, ll136, ll137,
        ll138, ll139, ll140, ll141, ll142, ll143, ll144, ll145, ll146, ll147,
        ll148, ll149, ll150, ll151, ll152, ll153, ll154, ll155, ll156, ll157,
        ll158, ll159, ll160, ll161, ll162, ll163, ll164, ll165, ll166, ll167,
        ll168, ll169, ll170, ll171, ll172, ll173, ll174, ll175, ll176, ll177,
        ll178, ll179, ll180, ll181, ll182, ll183, ll184, ll185, ll186, ll187,
        ll188, ll189, ll190, ll191, ll192, ll193, ll194, ll195, ll196, ll197,
        ll198, ll199, ll200, ll201, ll202, ll203, ll204, ll205, ll206, ll207,
        ll208, ll209, ll210, ll211, ll212, ll213, ll214, ll215, ll216, ll217,
        ll218, ll219, ll220, ll221, ll222, ll223, ll224, ll225, ll226, ll227,
        ll228, ll229, ll230, ll231, ll232, ll233, ll234, ll235, ll236, ll237,
        ll238, ll239, ll240, ll241, ll242, ll243, ll244, ll245, ll246, ll247,
        ll248, ll249, ll250, ll251, ll252, ll253, ll254, ll255, ll256, ll257,
        ll258, ll259, ll260, ll261, ll262, ll263, ll264, ll265, ll266, ll267,
        ll268, ll269, ll270, ll271, ll272, ll273, ll274, ll275, ll276, ll277,
        ll278, ll279, ll280, ll281, ll282, ll283, ll284, ll285, ll286, ll287,
        ll288, ll289, ll290, ll291, ll292, ll293, ll294, ll295, ll296, ll297,
        ll298, ll299, ll300, ll301, ll302, ll303, ll304, ll305, ll306, ll307,
        ll308, ll309, ll310, ll311, ll312, ll313, ll314, ll315, ll316, ll317,
        ll318, ll319, ll320, ll321, ll322, ll323, ll324, ll325, ll326, ll327,
        ll328, ll329, ll330, ll331, ll332, ll333, ll334, ll335, ll336, ll337,
        ll338, ll339, ll340, ll341, ll342, ll343, ll344, ll345, ll346, ll347,
        ll348, ll349, ll350, ll351, ll352, ll353, ll354, ll355, ll356, ll357,
        ll358, ll359, ll360, ll361, ll362, ll363, ll364, ll365, ll366, ll367,
        ll368, ll369, ll370, ll371, ll372, ll373, ll374, ll375, ll376, ll377,
        ll378, ll379, ll380, ll381, ll382, ll383, ll384, ll385, ll386, ll387,
        ll388, ll389, ll390, ll391, ll392, ll393, ll394, ll395, ll396, ll397,
        ll398, ll399, ll400, ll401, ll402, ll403, ll404, ll405, ll406, ll407,
        ll408, ll409, ll410, ll411, ll412, ll413, ll414, ll415, ll416, ll417,
        ll418, ll419, ll420, ll421, ll422, ll423, ll424, ll425, ll426, ll427,
        ll428, ll429, ll430, ll431, ll432, ll433, ll434, ll435, ll436, ll437,
        ll438, ll439, ll440, ll441, ll442, ll443, ll444, ll445, ll446, ll447,
        ll448, ll449, ll450, ll451, ll452, ll453, ll454, ll455, ll456, ll457,
        ll458, ll459, ll460, ll461, ll462, ll463, ll464, ll465, ll466, ll467,
        ll468, ll469, ll470, ll471, ll472, ll473, ll474, ll475, ll476, ll477,
        ll478, ll479, ll480, ll481, ll482, ll483, ll484, ll485, ll486, ll487,
        ll488, ll489, ll490, ll491, ll492, ll493, ll494, ll495, ll496, ll497,
        ll498, ll499, ll500, ll501, ll502, ll503, ll504, ll505, ll506, ll507,
        ll508, ll509, ll510, ll511;

        a.m();

        m1(deopt, a);
    }

    // Used for synchronization betwen main thread and thread
    // responsible for class loading
    static volatile boolean thread_started = false;
    static volatile boolean do_load = false;
    static volatile boolean load_done = false;

    static public void main(String[] args) {
        // This thread does the loading of B. If m1 does it, the class
        // loading can cause stack overflows.
        Thread thread = new Thread() {
            public void run() {
                thread_started = true;
                while(!do_load);
                new B();
                load_done = true;
            }
        };
        thread.start();
        while(!thread_started);
        // get m3 and m1 compiled
        A a = new A();
        for (int i = 0; i < 5000; i++) {
            m3(false, a);
            m1(false, a);
        }
        m2(true, a);

        System.out.println("TEST PASSED");
    }
}