[OpenJDK 2D-Dev] JDK-8081295: Build failed with GCC 5.1.1
yasuenag at gmail.com
Thu May 28 03:27:15 UTC 2015
I've uploaded webrev:
On 2015/05/28 12:19, Yasumasa Suenaga wrote:
> Hi all,
> I tried to build jdk9/dev on Fedora22 with GCC 5.1.1, however, it was failed.
> I found several problems:
> Fedora release 22 (Twenty Two) x86_64
> - gcc-5.1.1-1.fc22.x86_64
> 1. Array bounds check in GCC
> - jdk/src/java.desktop/share/native/libjavajpeg/jcmaster.c
> - jdk/src/java.desktop/share/native/libjavajpeg/jquant1.c
> - jdk/src/java.desktop/share/native/libmlib_image/mlib_ImageLookUp_64.c
> - jdk/src/java.desktop/share/native/libmlib_image/mlib_c_ImageLookUp_f.c
> It seems to be bug of GCC:
> Bug 59124: [4.8/4.9/5/6 Regression] Wrong warnings "array subscript is above array bounds"
> I think implementations of these files have no problem.
> So I propose to ignore warning(s) of compiler through pragma option as
> workaround when we use GCC .
> 2. Local variables might be clobbered
> - jdk/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c
> SplashDecodePng() calls setjmp(3).
> Some local variables initialize before setjmp() call, and use after it.
> Their initial values are only used at cleanup code (*done* label) and
> actual values are stored only after setjmp() call.
> So I think we can ignore this error through pragma option .
> 3. Incorrect condition
> - jdk/src/jdk.jdwp.agent/share/native/libjdwp/eventFilter.c
> searchAllSourceNames() returns int value. However, branch condition in
> eventFilterRestricted_passesFilter() treats it as boolean value.
> I received a comment from Erik to use --disable-warnings-as-errors,
> however I could not avoid error in 3.
>  https://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html
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