RFR(S): 8196992: Resolve disabled warnings for libdt_socket

[Langer, Christoph]

Looks good, Chris.

> -----Original Message-----
> From: build-dev [mailto:build-dev-bounces at openjdk.java.net] On Behalf Of
> Chris Plummer
> Sent: Freitag, 23. Februar 2018 02:04
> To: build-dev at openjdk.java.net build-dev <build-dev at openjdk.java.net>;
> serviceability-dev <serviceability-dev at openjdk.java.net>
> Subject: RFR(S): 8196992: Resolve disabled warnings for libdt_socket
> 
> Hello,
> 
> Please review the following:
> 
> https://bugs.openjdk.java.net/browse/JDK-8196992
> 
> diff --git a/make/lib/Lib-jdk.jdwp.agent.gmk
> b/make/lib/Lib-jdk.jdwp.agent.gmk
> --- a/make/lib/Lib-jdk.jdwp.agent.gmk
> +++ b/make/lib/Lib-jdk.jdwp.agent.gmk
> @@ -43,7 +43,6 @@
>       OPTIMIZATION := LOW, \
>       CFLAGS := $(CFLAGS_JDKLIB) -DUSE_MMAP \
>           $(LIBDT_SOCKET_CPPFLAGS), \
> -    DISABLED_WARNINGS_gcc := shift-negative-value, \
>       MAPFILE := $(TOPDIR)/make/mapfiles/libdt_socket/mapfile-vers, \
>       LDFLAGS := $(LDFLAGS_JDKLIB) \
>           $(call SET_SHARED_LIBRARY_ORIGIN), \
> 
> This change is undoing the makefile change done as part of JDK-8196985.
> The only warning that was turning up in libdt_socket code before
> JDK-8196985 was done has already been fixed by JDK-8196909. Thus no
> warnings need to be fixed.
> 
> After removing the above makefile code, I tested by building with the
> new toolchain. As a first test I undid the socketTransport.cpp fix from
> JDK-8196909 to verify that the new toolchain exposed the warning. Then I
> reverted socketTransport.cpp back to tip sources and saw no warnings
> with the new toolchain.
> 
> thanks,
> 
> Chris