Hi Alexander,
I filed the issue as:
https://bugs.openjdk.java.net/browse/JDK-8080695
The proposed patch is this, which also fixes compile time error:
http://cr.openjdk.java.net/~plevart/jdk9-dev/splashscreen_png/webrev.02/
If this is OK, I can push it if the change can go via jdk9-dev
repository where I can commit. Is there a special repository for client
libs? Do I need a sponsor?
Regards, Peter
On 05/19/2015 03:59 PM, Alexander Zvegintsev wrote:
Hi Peter,
I think that your solution can be simplified to:
diff -r 729dffc8afa0
src/java.desktop/share/native/libsplashscreen/splashscreen_png.c
--- a/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c
+++ b/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c
@@ -77,6 +77,8 @@ SplashDecodePng(Splash * splash, png_rw_
#else
if (setjmp(png_jmpbuf(png_ptr))) {
#endif
+ row_pointers = NULL;
+ image_data = NULL;
goto done;
}
As another solution you can declare row_pointers and image_data as
volatile.
BTW, Could you please file an issue?
Thanks,
Alexander.
On 05/19/2015 01:50 PM, Peter Levart wrote:
Hi,
I hope this is the right thread to post the observation.
Building recent OpenJDK 9 from sources on Fedora 21 fails with this:
/home/peter/work/hg/jdk9-dev/jdk/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c:
In function 'SplashDecodePng':
/home/peter/work/hg/jdk9-dev/jdk/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c:51:16:
error: variable 'row_pointers' might be clobbered by 'longjmp' or
'vfork' [-Werror=clobbered]
png_bytepp row_pointers = NULL;
^
/home/peter/work/hg/jdk9-dev/jdk/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c:52:15:
error: variable 'image_data' might be clobbered by 'longjmp' or
'vfork' [-Werror=clobbered]
png_bytep image_data = NULL;
^
cc1: all warnings being treated as errors
gmake[3]: ***
[/home/peter/work/hg/jdk9-dev/build/linux-x86_64-normal-server-release/support/native/java.desktop/libsplashscreen/splashscreen_png.o]
Error 1
gmake[3]: *** Waiting for unfinished jobs....
Awt2dLibraries.gmk:879: recipe for target
'/home/peter/work/hg/jdk9-dev/build/linux-x86_64-normal-server-release/support/native/java.desktop/libsplashscreen/splashscreen_png.o'
failed
gmake[2]: *** [java.desktop-libs] Error 1
make/Main.gmk:168: recipe for target 'java.desktop-libs' failed
I found that making the following change eliminates the compiler error:
http://cr.openjdk.java.net/~plevart/jdk9-dev/splashscreen_png/webrev.01/
Is this the right way to fix it?
Regards, Peter
