For an interface class instance, getSuperclass() returns java.lang.Object instead of null. This is inconsistent with the behavior of compiled classes and the public documentation on java.sun.com. Release: 3.1 Environment: i686-pc-linux-gnu How-To-Repeat: Run the attached example under the bytecode interpreter: [jsturm@suzy jsturm]$ gcj -C B.java [jsturm@suzy jsturm]$ gij B class java.lang.Object
From: Tom Tromey <tromey@redhat.com> To: jsturm@one-point.com Cc: gcc-gnats@gcc.gnu.org Subject: Re: libgcj/7073: bytecode interpreter gives wrong answer for interface getSuperclass() Date: 18 Jun 2002 16:33:32 -0600 Jeff> For an interface class instance, getSuperclass() returns Jeff> java.lang.Object instead of null. This is inconsistent with the Jeff> behavior of compiled classes and the public documentation on Jeff> java.sun.com. Thanks, I added a Mauve tests for this, plus a related bug I found when looking at your test case. (Try void.class.getSuperClass()) I also got a failure when compiling from bytecode. The void thing is definitely a compiler bug. I think it must be a regression, but I haven't looked. `void.class' has to be rewritten to look up the `Void.TYPE' field. Tom
From: tromey@gcc.gnu.org To: gcc-gnats@gcc.gnu.org Cc: Subject: libgcj/7073 Date: 20 Jun 2002 15:10:54 -0000 CVSROOT: /cvs/gcc Module name: gcc Changes by: tromey@gcc.gnu.org 2002-06-20 08:10:52 Modified files: libjava : ChangeLog defineclass.cc resolve.cc Log message: For PR libgcj/7073: * resolve.cc (_Jv_PrepareClass): Only resolve superclass if it exists. * defineclass.cc (handleClassBegin): Superclass for interface is `null'. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/ChangeLog.diff?cvsroot=gcc&r1=1.1363&r2=1.1364 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/defineclass.cc.diff?cvsroot=gcc&r1=1.27&r2=1.28 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/resolve.cc.diff?cvsroot=gcc&r1=1.28&r2=1.29
Responsible-Changed-From-To: unassigned->tromey Responsible-Changed-Why: I'm handling this.
State-Changed-From-To: open->closed State-Changed-Why: I checked in the libgcj part of the fix a while ago. I just checked in the gcj part. So I think this is fixed.
From: tromey@gcc.gnu.org To: gcc-gnats@gcc.gnu.org Cc: Subject: libgcj/7073 Date: 2 Jul 2002 02:56:13 -0000 CVSROOT: /cvs/gcc Module name: gcc Changes by: tromey@gcc.gnu.org 2002-07-01 19:56:13 Modified files: gcc/java : ChangeLog parse.y Log message: For PR libgcj/7073: * parse.y (patch_incomplete_class_ref): Handle VOID_TYPE specially. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/java/ChangeLog.diff?cvsroot=gcc&r1=1.1026&r2=1.1027 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/java/parse.y.diff?cvsroot=gcc&r1=1.389&r2=1.390
From: jakub@gcc.gnu.org To: gcc-gnats@gcc.gnu.org Cc: Subject: libgcj/7073 Date: 16 Oct 2002 21:26:49 -0000 CVSROOT: /cvs/gcc Module name: egcs Branch: gcc-3_2-rhl8-branch Changes by: jakub@gcc.gnu.org 2002-10-16 14:26:48 Modified files: gcc : ChangeLog expr.c langhooks-def.h langhooks.h langhooks.c fold-const.c Makefile.in gcc/java : ChangeLog parse.y lang.c lex.c jcf-write.c expr.c except.c verify.c jcf-dump.c libjava/testsuite/libjava.lang: Array_3.java libjava/testsuite: ChangeLog Added files: libjava/testsuite/libjava.compile: narrow_case.java zeroexp.java libjava/testsuite/libjava.lang: EvaluationOrder.java EvaluationOrder.out utf8concat.java Log message: gcc/ 2002-10-16 Jakub Jelinek <jakub@redhat.com> * fold-const.c: Include langhooks.h. * Makefile.in (fold-const.o): Depend on langhooks.h. 2002-08-21 Tom Tromey <tromey@redhat.com> For PR java/6005 and PR java/7611: * fold-const.c (fold_truthop): Use can_use_bit_fields_p. (fold): Likewise. * langhooks.c (lhd_can_use_bit_fields_p): New function. * langhooks-def.h (lhd_can_use_bit_fields_p): Declare. (LANG_HOOKS_CAN_USE_BIT_FIELDS_P): New define. (LANG_HOOKS_INITIALIZER): Use it. * langhooks.h (struct lang_hooks) [can_use_bit_fields_p]: New field. 2002-07-24 Richard Henderson <rth@redhat.com> * expr.c (expand_expr) [TRY_FINALLY_EXPR]: Use GOTO_SUBROUTINE_EXPR form when not optimizing. 2002-07-21 Richard Henderson <rth@redhat.com> * expr.c (expand_expr) [TRY_FINALLY_EXPR]: Don't use GOTO_SUBROUTINE_EXPR when finally_block can be re-expanded. gcc/java/ 2002-10-15 Andrew Haley <aph@redhat.com> * parse.y (patch_invoke): Call force_evaluation_order on a static arg list. (resolve_qualified_expression_name): Call force_evaluation_order on a arg list that is part of a Qualified Expression Name. 2002-10-09 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> * parse.y (merge_string_cste): Add parentheses around & within |. 2002-10-08 Tom Tromey <tromey@redhat.com> * parse.y (variable_declarator_id): Simplify error path for array declarator error. For PR java/8003. 2002-10-07 Anthony Green <green@redhat.com> * parse.y (merge_string_cste): Fix bug in string concatenation. 2002-10-01 Nathan Sidwell <nathan@codesourcery.com> * jcf-dump.c (print_constant, case CONSTANT_float): Don't fall foul of type-based aliasing. 2002-09-26 Andrew Haley <aph@redhat.com> * expr.c (build_java_array_length_access): Check for null pointer. * expr.c (expand_java_arrayload): Likewise. 2002-09-17 Tom Tromey <tromey@redhat.com> * lex.c (java_read_unicode_collapsing_terminators): Handle case where \r appears at EOF. Fixes PR java/7950. 2002-09-11 Per Bothner <per@bothner.com> * parse.y (fold_constant_for_init): If a VAR_DECL, convert numerical constant to the type of the field. (java_complete_tree): Remove now-redundant code. * parse.y (fold_constant_for_init): 'null' is not a constant expr. 2002-09-03 Jesse Rosenstock <jmr@ugcs.caltech.edu> For PR java/5794: * verify.c (verify_jvm_instructions) [OPCODE_jsr]: Only push the return label if a ret instruction for the jsr has been reached. 2002-08-28 Andrew Haley <aph@redhat.com> * verify.c (verify_jvm_instructions): Allow exception handler inside code that is being protected, but generate a warning. * except.c (link_handler): Initialize `expanded' in new eh_range. (binding_depth, is_class_level, current_pc): Declare extern. 2002-08-26 Tom Tromey <tromey@redhat.com> * parse.y (try_builtin_assignconv): Allow narrowing primitive conversion if RHS_TYPE is byte, short, or char. 2002-08-21 Tom Tromey <tromey@redhat.com> For PR java/6005 and PR java/7611: * lang.c (LANG_HOOKS_CAN_USE_BITFIELDS_P): New define. (java_can_use_bit_fields_p): New function. 2002-08-08 Bryce McKinlay <bryce@waitaki.otago.ac.nz> * jcf-write.c (get_access_flags): Return correct access flags for private and protected inner classes. 2002-07-22 Tom Tromey <tromey@redhat.com> * lex.c (java_lex): Check for `e' or `E' after 0. 2002-07-21 Richard Henderson <rth@redhat.com> * lang.c (java_unsafe_for_reeval): New. (LANG_HOOKS_UNSAFE_FOR_REEVAL): New. 2002-07-01 Tom Tromey <tromey@redhat.com> For PR libgcj/7073: * parse.y (patch_incomplete_class_ref): Handle VOID_TYPE specially. libjava/testsuite/ 2002-10-15 Andrew Haley <aph@redhat.com> * libjava.lang/EvaluationOrder.java (EvaluationOrder): New. * libjava.lang/EvaluationOrder.out (EvaluationOrder): New. 2002-10-03 Andrew Haley <aph@redhat.com> * libjava.lang/Array_3.java (baz): New. (main): Call baz. 2002-09-29 Anthony Green <green@redhat.com> * libjava.lang/utf8concat.java: New file. * libjava.lang/utf8concat.out: Ditto. 2002-08-26 Tom Tromey <tromey@redhat.com> * libjava.compile/narrow_case.java: New file. 2002-07-22 Tom Tromey <tromey@redhat.com> * libjava.compile/zeroexp.java: New file. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.13152.2.657.2.27.2.21&r2=1.13152.2.657.2.27.2.22 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/expr.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.423.2.19.4.1.2.3&r2=1.423.2.19.4.1.2.4 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/langhooks-def.h.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.8.10.2.2.1.2.2&r2=1.8.10.2.2.1.2.3 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/langhooks.h.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.15.8.2.2.1.2.2&r2=1.15.8.2.2.1.2.3 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/langhooks.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.16.2.2.4.1.2.2&r2=1.16.2.2.4.1.2.3 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/fold-const.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.185.2.4.4.1&r2=1.185.2.4.4.2 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/Makefile.in.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.830.2.15.4.3&r2=1.830.2.15.4.4 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.925.2.59.2.2.2.2&r2=1.925.2.59.2.2.2.3 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/parse.y.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.353.2.19&r2=1.353.2.19.4.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/lang.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.85.2.4.4.2&r2=1.85.2.4.4.3 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/lex.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.80.8.4&r2=1.80.8.4.8.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/jcf-write.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.99.2.4&r2=1.99.2.4.4.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/expr.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.132.2.10&r2=1.132.2.10.4.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/except.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.26.20.1&r2=1.26.20.1.8.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/verify.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.47&r2=1.47.14.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/java/jcf-dump.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.42.2.2&r2=1.42.2.2.8.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/libjava/testsuite/libjava.compile/narrow_case.java.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=NONE&r2=1.1.16.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/libjava/testsuite/libjava.compile/zeroexp.java.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=NONE&r2=1.1.18.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/libjava/testsuite/libjava.lang/EvaluationOrder.java.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=NONE&r2=1.1.2.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/libjava/testsuite/libjava.lang/EvaluationOrder.out.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=NONE&r2=1.1.2.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/libjava/testsuite/libjava.lang/utf8concat.java.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=NONE&r2=1.1.10.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/libjava/testsuite/libjava.lang/Array_3.java.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.1&r2=1.1.26.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/libjava/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.177.2.24.2.2&r2=1.177.2.24.2.2.2.1