#!/bin/sh

# 

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#  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

# 

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#  accompanied this code).

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##

## @test

## @bug 6878713

## @bug 7030610

## @bug 7037122

## @bug 7123945

## @summary Verifier heap corruption, relating to backward jsrs

## @run shell Test6878713.sh

##

## some tests require path to find test source dir

if [ "${TESTSRC}" = "" ]

then

  TESTSRC=${PWD}

  echo "TESTSRC not set.  Using "${TESTSRC}" as default"

fi

echo "TESTSRC=${TESTSRC}"

## Adding common setup Variables for running shell tests.

. ${TESTSRC}/../../test_env.sh

TARGET_CLASS=OOMCrashClass1960_2

echo "INFO: extracting the target class."

${COMPILEJAVA}${FS}bin${FS}jar xvf \

    ${TESTSRC}${FS}testcase.jar ${TARGET_CLASS}.class

# remove any hs_err_pid that might exist here

rm -f hs_err_pid*.log

echo "INFO: checking for 32-bit versus 64-bit VM."

${TESTJAVA}${FS}bin${FS}java ${TESTVMOPTS} -version 2>&1 \

    | grep "64-Bit [^ ][^ ]* VM" > /dev/null 2>&1

status="$?"

if [ "$status" = 0 ]; then

    echo "INFO: testing a 64-bit VM."

    is_64_bit=true

else

    echo "INFO: testing a 32-bit VM."

fi

if [ "$is_64_bit" = true ]; then

    # limit is 768MB in 8-byte words (1024 * 1024 * 768 / 8) == 100663296

    MALLOC_MAX=100663296

else

    # limit is 768MB in 4-byte words (1024 * 1024 * 768 / 4) == 201326592

    MALLOC_MAX=201326592

fi

echo "INFO: MALLOC_MAX=$MALLOC_MAX"

echo "INFO: executing the target class."

# -XX:+PrintCommandLineFlags for debugging purposes

# -XX:+IgnoreUnrecognizedVMOptions so test will run on a VM without

#     the new -XX:MallocMaxTestWords option

# -XX:+UnlockDiagnosticVMOptions so we can use -XX:MallocMaxTestWords

# -XX:MallocMaxTestWords limits malloc to $MALLOC_MAX

${TESTJAVA}${FS}bin${FS}java \

    -XX:+PrintCommandLineFlags \

    -XX:+IgnoreUnrecognizedVMOptions \

    -XX:+UnlockDiagnosticVMOptions \

    -XX:MallocMaxTestWords=$MALLOC_MAX \

    ${TESTVMOPTS} ${TARGET_CLASS} > test.out 2>&1

echo "INFO: begin contents of test.out:"

cat test.out

echo "INFO: end contents of test.out."

echo "INFO: checking for memory allocation error message."

# We are looking for this specific memory allocation failure mesg so

# we know we exercised the right allocation path with the test class:

MESG1="Native memory allocation (malloc) failed to allocate 25696531[0-9][0-9] bytes"

grep "$MESG1" test.out

status="$?"

if [ "$status" = 0 ]; then

    echo "INFO: found expected memory allocation error message."

else

    echo "INFO: did not find expected memory allocation error message."

    # If we didn't find MESG1 above, then there are several scenarios:

    # 1) -XX:MallocMaxTestWords is not supported by the current VM and we

    #    didn't fail TARGET_CLASS's memory allocation attempt; instead

    #    we failed to find TARGET_CLASS's main() method. The TARGET_CLASS

    #    is designed to provoke a memory allocation failure during class

    #    loading; we actually don't care about running the class which is

    #    why it doesn't have a main() method.

    # 2) we failed a memory allocation, but not the one we were looking

    #    so it might be that TARGET_CLASS no longer tickles the same

    #    memory allocation code path

    # 3) TARGET_CLASS reproduces the failure mode (SIGSEGV) fixed by

    #    6878713 because the test is running on a pre-fix VM.

    echo "INFO: checking for no main() method message."

    MESG2="Error: Main method not found in class"

    grep "$MESG2" test.out

    status="$?"

    if [ "$status" = 0 ]; then

        echo "INFO: found no main() method message."

    else

        echo "FAIL: did not find no main() method message."

        # status is non-zero for exit below

        if [ -s hs_err_pid*.log ]; then

            echo "INFO: begin contents of hs_err_pid file:"

            cat hs_err_pid*.log

            echo "INFO: end contents of hs_err_pid file."

        fi

    fi

fi

if [ "$status" = 0 ]; then

    echo "PASS: test found one of the expected messages."

fi

exit "$status"