This is from https://bugzilla.redhat.com/show_bug.cgi?id=297961
The problem is that .class files can now (as of Java 1.5) contain classes whose
name contains a hyphen. The mangling used to generate internal labels in gcj
passes these hyphens through to the assembler rather than mangling them.
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Summary: gcj generates assembler errors
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: java
AssignedTo: aph at gcc dot gnu dot org
ReportedBy: aph at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33639