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Date:      Thu, 01 Aug 2024 16:07:18 +0000
From:      bugzilla-noreply@freebsd.org
To:        java@FreeBSD.org
Subject:   maintainer-feedback requested: [Bug 280559] java/openjdk8: fix build with clang 19
Message-ID:  <bug-280559-8522-bUfbC35Hc3@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-280559-8522@https.bugs.freebsd.org/bugzilla/>
References:  <bug-280559-8522@https.bugs.freebsd.org/bugzilla/>

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Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-java (Nobody)
<java@FreeBSD.org> for maintainer-feedback:
Bug 280559: java/openjdk8: fix build with clang 19
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D280559



--- Description ---
Clang 19 is now more strict about undefined integral expressions used as
constants in enum, which results in errors compiling java/openjdk8,
similar to:

=20=20=20
/wrkdirs/usr/ports/java/openjdk8/work/jdk8u-jdk8u422-b05.1/hotspot/src/shar=
e/vm
/oops/cpCache.hpp:195:34:
error: expression is not an integral constant expression
      195 |	option_bits_mask	   =3D ~(((-1) << tos_state_shift) |
(field_index_mask | parameter_size_mask))
	  |=09=09=09=09=20=20=20=20
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
=20=20=20
/wrkdirs/usr/ports/java/openjdk8/work/jdk8u-jdk8u422-b05.1/hotspot/src/shar=
e/vm
/oops/cpCache.hpp:195:42:
note: left shift of negative value -1
      195 |	option_bits_mask	   =3D ~(((-1) << tos_state_shift) |
(field_index_mask | parameter_size_mask))
	  |					     ^

=20=20=20
/wrkdirs/usr/ports/java/openjdk8/work/jdk8u-jdk8u422-b05.1/hotspot/src/shar=
e/vm
/code/dependencies.hpp:173:27:
error: expression is not an integral constant expression
      173 |	all_types	    =3D ((1 << TYPE_LIMIT) - 1) & ((-1) <<
FIRST_TYPE),
	  |=09=09=09=20=20=20=20=20
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
=20=20=20
/wrkdirs/usr/ports/java/openjdk8/work/jdk8u-jdk8u422-b05.1/hotspot/src/shar=
e/vm
/code/dependencies.hpp:173:59:
note: left shift of negative value -1
      173 |	all_types	    =3D ((1 << TYPE_LIMIT) - 1) & ((-1) <<
FIRST_TYPE),
	  |							      ^

    In file included from
/wrkdirs/usr/ports/java/openjdk8/work/jdk8u-jdk8u422-b05.1/jdk/src/share/na=
tive
/com/sun/java/util/jar/pack/bands.cpp:43:
=20=20=20
/wrkdirs/usr/ports/java/openjdk8/work/jdk8u-jdk8u422-b05.1/jdk/src/share/na=
tive
/com/sun/java/util/jar/pack/constants.h:226:33:
error: expression is not an integral constant expression
      226 |	AO_UNUSED_MBZ		  =3D (-1)<<13, // options bits reserved
for future use.
	  |				    ^~~~~~~~
=20=20=20
/wrkdirs/usr/ports/java/openjdk8/work/jdk8u-jdk8u422-b05.1/jdk/src/share/na=
tive
/com/sun/java/util/jar/pack/constants.h:226:37:
note: left shift of negative value -1
      226 |	AO_UNUSED_MBZ		  =3D (-1)<<13, // options bits reserved
for future use.
	  |					^

In openjdk11 and later, the (-1) constants have been replaced by the
unsigned variant (~0u), which fixes these errors.



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