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Date: Wed, 04 Dec 2002 13:47:00 -0000
Message-ID: <20021204214754.16087.qmail@sources.redhat.com>
To: anonymous@sources.redhat.com, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
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From: bangerth@dealii.org
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  gcc-gnats@gcc.gnu.org
Subject: Re: c++/8803: [3.2/3.3 regression] Internal compiler error in instantiate_virtual_regs_1, at function.c:3974
X-SW-Source: 2002-12/txt/msg00240.txt.bz2
List-Id: <gcc-prs.sourceware.org>

Old Synopsis: Internal compiler error in instantiate_virtual_regs_1, at function.c:3974
New Synopsis: [3.2/3.3 regression] Internal compiler error in instantiate_virtual_regs_1, at function.c:3974

State-Changed-From-To: open->analyzed
State-Changed-By: bangerth
State-Changed-When: Wed Dec  4 13:47:53 2002
State-Changed-Why:
    Confirmed. A simpler testcase is
    ------------------------------------
    void f (unsigned char * u) {
      char U1U2U3U4 [8];
      asm ("pxor %[U], %[U]\n\t"
           "punpacklbw %[u], %[U]\n\t"
           : [U] "=y" (*U1U2U3U4)
           : [u] "m" (*u));
    }
    --------------------------
    on which I get (with 3.2.2pre and 3.3pre)
    tmp/g> /home/bangerth/bin/gcc-3.0.4/bin/gcc -c test.cc
    test.cc: In function `void f(unsigned char*)':
    test.cc:5: parse error before `[' token
    tmp/g> /home/bangerth/bin/gcc-3.2/bin/gcc -c test.cc
    test.cc: In function `void f(unsigned char*)':
    test.cc:7: Internal compiler error in instantiate_virtual_regs_1, at function.c
       :3972
    Please submit a full bug report,
    with preprocessed source if appropriate.
    See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
    
    
    The code did not compile with 3.0.4, since apparently
    some syntax about [U] in the asm statement is not understood.
    Nevertheless, that it now ICEs is a regression, so I mark it 
    as that.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8803