RFR: 8257800: CompileCommand TypedMethodOptionMatcher::parse_method_pattern() may over consume

[Xin Liu]

On Sun, 6 Dec 2020 23:51:20 GMT, Claes Redestad <redestad at openjdk.org> wrote:

>> if users don't specify method_name in CompileCommand, hotspot will over consume a token.
>> in debug build, it may hit the assertion of type mismatch.
>
> src/hotspot/share/compiler/methodMatcher.cpp line 282:
> 
>> 280:       error_msg = "not specify any method pattern";
>> 281:       m_match = MethodMatcher::Unknown;
>> 282:       bytes_read -= strlen(method_name);
> 
> Windows build fails on this with "conversion from 'size_t' to 'int'"

Thanks!  I delete this statement because bytes_read will not be used. 
The function exits early because of m_match = MethodMatcher::Unknown.

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PR: https://git.openjdk.java.net/jdk/pull/1652