Re: "Uncaught translation error" when transforming Kawa-compiled classes with dex

[Per Bothner <per@bothner.com>]

On 08/29/2017 10:10 AM, Kay Zheng wrote:
> I tried building a simple skeleton Android app against the master
> branch, targeting Android API level 21 (Android 5.0). The compilation
> went well, but there's this ambiguous error when classes are being
> transformed to dex files:
> 
>      Uncaught translation error: com.android.dx.cf.code.SimException:
> local variable type mismatch: attempt to set or access a value of type
> int using a local variable of type gnu.mapping.CallContext. This is
> symptomatic of .class transformation tools that ignore local variable
> information.

Hm.  It would be helpful if the error message would say what class and
method it were complaining about.

A work-around for Java code would be to Compile with -g:lines (-g:none) to
suppress of the LocalVariableTable attribute, since that is what dex seems
to be complaining about.  Unfortunately, Kawa doesn't have a comparable option
for Scheme code. It shouldn't be hard to add.

> And the content of kawa-javacflags.patch:
> 
>      $ cat kawa-javacflags.patch
>      diff --git a/Makefile.am b/Makefile.am
>      index da9e490..a0df1a3 100644
>      --- a/Makefile.am
>      +++ b/Makefile.am
>      @@ -372,10 +372,10 @@ $(srcdir)/patch-source-list: $(top_srcdir)/configure
>            | sed -e 's|./||' | sort > $@
> 
>       kawa/Version.class: kawa/Version.java
>      -   $(JAVAC) -d . $^
>      +   $(JAVAC) -d . $(JAVACFLAGS) $^
> 
>       gnu/kawa/util/PreProcess.class: gnu/kawa/util/PreProcess.java
>      -   $(JAVAC) -d . $^
>      +   $(JAVAC) -d . $(JAVACFLAGS) $^
> 
>       JAVA_PREPROCESS_OPTIONS = @JAVA_SOURCE_SELECTOR@
> $(PREPROCESS_HTTPSERVER) $(PREPROCESS_XML) $(PREPROCESS_JLINE3)
> $(PREPROCESS_AWT)

Thanks - I fixed this in my sources.  I'll check it in after I've tested it.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/