Maximum number of warnings allowed?

[Maurizio Cimadamore]

Hi David,
-Xmaxwarns controls how many warnings can be emitted - the default is 
100, which means after 100 warnings the warning output will be omitted. 
There are similar options to limit errors and notes.

That said, changing these limits does not affect the 'treat the warning 
as errors' policy - which is controlled by a separate flag, namely -Werror.

In 'make/common/SetupJavaCmpilers.gmk' there are these lines:

# If warnings needs to be non-fatal for testing purposes use a command like:
# make JAVAC_WARNINGS="-Xlint:all -Xmaxwarns 10000"
JAVAC_WARNINGS := -Xlint:all -Werror


So, the Werror flag doesn't seem controlled by the configuration-wide 
'disable-warnings-as-errors' - which means you probably have to edit 
that makefile and remove the Werror flag.

Cheers
Maurizio


On 13/09/17 11:30, David Holmes wrote:
> On 13/09/2017 7:33 PM, David Holmes wrote:
>> I'm building with --disable-warnings-as-errors but the build still 
>> fails:
>>
>> 1 error
>> 100 warnings
>> CompileJavaModules.gmk:623: recipe for target 
>> '/export/users/dh198349/valhalla/valhalla-nestmates/build/linux-x64-open-debug/jdk/modules/java.datatransfer/_the.java.datatransfer_batch' 
>> failed
>> make[3]: *** 
>> [/export/users/dh198349/valhalla/valhalla-nestmates/build/linux-x64-open-debug/jdk/modules/java.datatransfer/_the.java.datatransfer_batch] 
>> Error 1
>> make/Main.gmk:198: recipe for target 'java.datatransfer-java' failed
>> make[2]: *** [java.datatransfer-java] Error 1
>>
>> Is there a maximum number of warnings allowed before it's considered 
>> an error? Could this be coming from (s)javac? (The warnings are Java 
>> related).
>
> I was told about -Xmaxwarns for javac and I bumped it to 1000 but it 
> didn't help much:
>
> 1 error
> 138 warnings
> ...
>
> I finally spotted this in the log:
>
> error: warnings found and -Werror specified
>
> From the make-support/failure-log I see -Werror in the javac command 
> line. Obviously it isn't adhering to --disable-warnings-as-errors! :(
>
> David
>
>> Thanks,
>> David