Compiler warnings in dtrace code:

/usr/bin/gcc -g -O2 -fno-strict-aliasing -fPIC -W -Wall -Wno-unused -Wno-parentheses -fno-omit-frame-pointer -D_LITTLE_ENDIAN -DDEBUG -DLOGGING -DARCH='"i586"' -Di586 -DLINUX -DRELEASE='"1.7.0-ea-fastdebug"' -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_REENTRANT -I. -I/BUILD_AREA/jdk7/build/linux-i586/../linux-i586-fastdebug/tmp/sun/sun.tracing.dtrace/jsdt/CClassHeaders -I../../../../src/solaris/javavm/export -I../../../../src/share/javavm/export -I../../../../src/share/native/common -I../../../../src/solaris/native/common -I../../../../src/share/native/sun/tracing/dtrace -I../../../../src/solaris/native/sun/tracing/dtrace -c -o /BUILD_AREA/jdk7/build/linux-i586/../linux-i586-fastdebug/tmp/sun/sun.tracing.dtrace/jsdt/obj_gO/jvm_symbols_md.o ../../../../src/solaris/native/sun/tracing/dtrace/jvm_symbols_md.c
../../../../src/share/native/sun/tracing/dtrace/JVM.c: In function 'Java_sun_tracing_dtrace_JVM_defineClass0':
../../../../src/share/native/sun/tracing/dtrace/JVM.c:292: warning: comparison between signed and unsigned