[java] 5 openjdk tests for javadoc failed on java-basic package

[vivanov-gh]

5 openjdk tests for Javadoc failed on the java-basic package:
langtools/test/com/sun/javadoc/T6735320/T6735320.java
langtools/test/com/sun/javadoc/testClassCrossReferences/TestClassCrossReferences.java
langtools/test/com/sun/javadoc/testValueTag/TestValueTag.java
langtools/test/com/sun/javadoc/testCustomTag/TestCustomTag.java
langtools/test/tools/javadoc/doclint/DocLintTest.java

The test langtools/test/com/sun/javadoc/T6735320/T6735320.java on CL failed with message:

WARNING_OUTPUT :
/home/cluser/test_proj/jtreg/jdk8_split_tests/langtools/test/com/sun/javadoc/T6735320/SerialFieldTest.java:30: warning - @serialField tag has no arguments.
java.lang.AssertionError: zero return code from javadoc

on RHEL output is:

ERROR_OUTPUT :
/home/smbuser/localwdir/test_bundling_tst/langtools/test/com/sun/javadoc/T6735320/SerialFieldTest.java:28: error: identifier expected
* @serialField

Test langtools/test/com/sun/javadoc/testClassCrossReferences/TestClassCrossReferences.java on CL failed with message:

Running subtest #4... FAILED
for bug 4652655-4857717 (TestClassCrossReferences)
when searching for:
Link to external member gcd in 4652655-4857717/C.html

On RHEL output is:

Running subtest #4... Passed
found:
Link to external member gcd in 4652655-4857717/C.html

Note, the generated C.html files are different for Clear Linux and RHEL:

114c114
< Cross link to member: Link to external member gcd

Cross link to member: Link to external member gcd

==========================

I.e. in case of Clear Linux it generates "gcd(java.math.BigInteger)" instead of "gcd-java.math.BigInteger-".

The test com/sun/javadoc/testValueTag/TestValueTag.java failed on Clear Linux with log:

Running subtest #19... FAILED
for bug 4764045 (TestValueTag)
when searching for:
error: value does not refer to a constant
* Result: {@value TEST_12_ERROR} in ERROR_OUTPUT
...

On RHEL output is:

Running subtest #19... Passed
found:
error: value does not refer to a constant
* Result: {@value TEST_12_ERROR} in ERROR_OUTPUT

The test /tools/javadoc/doclint/DocLintTest.java failed with output:

test: []
Loading source file Test.java...
...
Test.java:13: warning - @return tag has no arguments.
Test.java:10: warning - Tag @see: reference not found: DoesNotExist
...
2 warnings

On RHEL output is:

test: []
Loading source file Test.java...
...
Test.java:9: error: reference not found
/** @see DoesNotExist /
^
Test.java:12: warning: no description for @return
/* @return */
^
...
1 error
1 warning

For the first glance some settings are different for Javadoc tool.