RFR: 8286562: GCC 12 reports some compiler warnings [v5]

[Kim Barrett]

On Tue, 17 May 2022 03:05:09 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Yasumasa Suenaga has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Revert change for java.c , parse_manifest.c , LinuxPackage.c
>
> src/hotspot/share/opto/memnode.cpp line 1413:
> 
>> 1411:                    bt == T_BYTE    || bt == T_SHORT ||
>> 1412:                    bt == T_INT     || bt == T_LONG, "wrong type = %s", type2name(bt));
>> 1413: PRAGMA_DIAG_POP
> 
> The problem here is the definition of type2name, which returns NULL for an unknown BasicType.  It would probably be better if it returned a recognizable string for that situation, eliminating this warning at it's source.

While looking at type2name, I noticed the comment for the immediately preceding type2name_tab is wrong.

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PR: https://git.openjdk.java.net/jdk/pull/8646