From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22338 invoked by alias); 17 Apr 2002 00:26:00 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 22324 invoked by uid 71); 17 Apr 2002 00:26:00 -0000 Date: Tue, 16 Apr 2002 17:26:00 -0000 Message-ID: <20020417002600.22323.qmail@sources.redhat.com> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, From: "Kaveh R. Ghazi" Subject: Re: c/6300: sparcv9-sun-solaris2.7 gcc-3.1 C testsuite failure in gcc.dg/cpp/charconst.c Reply-To: "Kaveh R. Ghazi" X-SW-Source: 2002-04/txt/msg00856.txt.bz2 List-Id: The following reply was made to PR c/6300; it has been noted by GNATS. From: "Kaveh R. Ghazi" To: neil@daikokuya.demon.co.uk Cc: gcc-gnats@gcc.gnu.org, ghazi@caip.rutgers.edu, zack@codesourcery.com Subject: Re: c/6300: sparcv9-sun-solaris2.7 gcc-3.1 C testsuite failure in gcc.dg/cpp/charconst.c Date: Tue, 16 Apr 2002 20:19:15 -0400 (EDT) > From: "Kaveh R. Ghazi" > > > From: Neil Booth > > > > Kaveh R. Ghazi wrote:- > > > > > > FAIL: gcc.dg/cpp/charconst.c (test for excess errors) > > > > > > >From gcc.log, the excess error is: > > > > > > > Excess errors: > > > > gcc.dg/cpp/charconst.c:28: warning: overflow in implicit constant conversion > > > > > > It seems that sparcv9- (i.e. not sparc-) is necessary to trigger > > the bug. See: http://gcc.gnu.org/ml/gcc-testresults/2002-04/msg00484.html > > > vs: http://gcc.gnu.org/ml/gcc-testresults/2002-04/msg00482.html > > > > > > *** This is a regression from 3.0.3. > > > > Any idea what patch caused it? > > Neil. > > No. I traced back and found that it didn't happen here: > 6/7/2001 http://gcc.gnu.org/ml/gcc-testresults/2001-06/msg00210.html > > but it did occur here: > 7/10/2001 http://gcc.gnu.org/ml/gcc-testresults/2001-07/msg00160.html > 7/17/2001 http://gcc.gnu.org/ml/gcc-testresults/2001-07/msg00219.html > > This interval seems to have been a particularing unstable period > for solaris2 on what was then the 3.1 trunk. So unfortunately > there aren't any reports in between those listed above which > narrow down the exact date when it started for solaris2. I narrowed the search by building cc1 using various "cvs up -D " and found that 6/9/2001 was ok and 6/10/2001 had the problem. I've included the ChangeLog diff between those two dates. If I had to guess, I'd say that the reenabling of the solaris2 bi-arch was the trigger. However that probably only enabled the bug and wasn't necessarily the underlying cause. :-( > 2001-06-09 Alexandre Oliva > > * doc/invoke.texi (C Dialect Options): Document -aux-info. > (Debugging Options): Document -print-multi-directory and > -print-multi-lib. > * doc/gcc.1: Rebuilt. > > 2001-06-09 Alexandre Oliva > > * toplev.c (independent_decode_option): Require `=' between > `-aux-info' and filename in the same argument. > * gcc.c: Don't pass -aux-info=filename twice. > > 2001-06-09 Mark Mitchell > > * expr.c (expand_expr, case ARRAY_REF): Do not replace > an array element with the known initializing value if it has > side-effects. > > * toplev.c (rest_of_compilation): Remove dead code before > purge_addressof. > > 2001-06-09 Neil Booth > > * cppinit.c (print_help): Document -fpreprocessed. > * invoke.texi: Similarly. > > Sun Jun 10 00:35:37 CEST 2001 Jan Hubicka > > * predict.def: New file. > * predict.h: New file. > * predict.c: Include predict.h. > (predictor_info): New structure and array. > (predict_edge, predict_insn): Rewrite; make global. > (predict_edge_def, predict_insn_def): New global functions. > (dump_prediction, combine_predictions_for_insns): New > static functions. > (estimate_probability): Change calls to predict_edge > to predict_edge_def and calls to predict_insn to predict_insn_def; > combine probabilities. > (expected_value_to_br_prob): Behave as predictor. > * rtl.h (REG_BR_PRED): Update coment. > (invert_br_probabilities): New. > * jump.c: Include predict.h > (duplicate_loop_exit_test): Drop branch prediction notes. > (invert_jump): Use invert_br_probabilities. > * Makefile.in: Add dependancy on predict.h for jump and predict pass. > * ifcvt.c (dead_or_predicable): Use invert_br_probabilities. > * combine.c (distribute_notes): Handle BR_PRED. > > Sat Jun 9 23:29:41 CEST 2001 Jan Hubicka > > * predict.c (predict_insn, predict_edge): New static functions. > (estimate_probability): Revamp to use new functions; > fix loop header heruistics; add loop exist heruistics > > 2001-06-09 Alexandre Oliva > > * config.gcc: Re-enable bi-arch sparc on Solaris 7 and above. > > 2001-06-09 Peter Jakubek > > * config/m68k/m68k.md (ashrdi_const): Fix right shift by 16. > > 2001-06-09 John David Anglin > > * vax.h (NOTICE_UPDATE_CC): Set CC_NO_OVERFLOW in cc_status.flags > for integer operations that don't update C bit. > > 2001-06-09 Nicola Pero > > * gthr-posix.h (__gthread_objc_init_thread_system): If > pthread_key_create fails, it's not clear what the return value is. > This obvious fix makes sure it always returns -1 if a problem > occurs. > > 2001-06-09 Joseph S. Myers > > * doc/gcc.texi: Use @defcodeindex for the index of options. Add > more index entries. Use more logical markup where appropriate. > Use TeX quotes and dashes. > > 2001-06-09 Benjamin Kosnik > > * unwind-pe.h: Conditionally qualify references to abort with > std::. > > 2001-06-09 Julian Foad > > * doc/invoke.texi: Remove superfluous text. >