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Date: Sun, 11 Mar 2007 01:46:00 -0000
Subject: [Bug c/31128]  New: ICE with __builtin_stack_restore
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Message-ID: <bug-31128-14221@http.gcc.gnu.org/bugzilla/>
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From: "nicholas at mxc dot ca" <gcc-bugzilla@gcc.gnu.org>
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In a delta reduction from an ICE compiling code from LLVM's C backend, I get
the following one-line testcase:

  void f() { __builtin_stack_restore(f); }

$ gcc-4.1 b2.c -c
b2.c: In function ‘foo’:
b2.c:2: internal compiler error: in lhd_set_decl_assembler_name, at
langhooks.c:165
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
Preprocessed source stored into /tmp/cc6cllgG.out file, please attach this to
your bugreport.

This fails with 4.1.2 and 4.0.4:

$ gcc-4.1 -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu
--enable-libstdcxx-debug --enable-mpfr --with-tune=i686
--enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
$ gcc-4.0 -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --enable-languages=c,c++,java
--prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--program-suffix=-4.0 --enable-__cxa_atexit --enable-clocale=gnu
--enable-libstdcxx-debug --enable-java-awt=gtk-default --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre --with-tune=i686
--enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.4 20060904 (prerelease) (Debian 4.0.3-7)

but passes with gcc 3.4 and 3.3.

This bug may be related to bug 30095, except that this bug uses C not fortran,
and this bug occurs on x86 not ppc.


-- 
           Summary: ICE with __builtin_stack_restore
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nicholas at mxc dot ca


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31128