[Bug c/29119] New: Internal compiler error while adding __asm__ statement

[Bug c/29119] New: Internal compiler error while adding __asm__ statement

[remy dot saissy at gmail dot com]

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Hi,
I got an internal compiler error while compiling a source file.
I was not able to reproduce the bug on a smaller source file.
I only notice that the error occurs when I add an
__asm__ volatile ("movl %0,%%eax"::"m"(get_segment_base_address(*entry)));
but not at the line of this addition.
On gcc 3.x  adding this statement produce a normal warning of indirectly
addressable input. (entry is an array of uint8_t[8])

Here is the output of gcc -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 20060901 (prerelease) (Debian 4.1.1-13)

Command line that triggers the bug:
/usr/lib/gcc/i486-linux-gnu/4.1.2/cc1 -fpreprocessed ldt.i -quiet -dumpbase
ldt.c -mtune=i686 -auxbase-strip mm/ldt.o -O2 -Wall -Wstrict-aliasing=2
-std=gnu99 -version -fomit-frame-pointer -ffreestanding -o ldt.s
GNU C version 4.1.2 20060901 (prerelease) (Debian 4.1.1-13) (i486-linux-gnu)
        compiled by GNU C version 4.1.2 20060901 (prerelease) (Debian
4.1.1-13).
GGC heuristics: --param ggc-min-expand=63 --param ggc-min-heapsize=62590
Compiler executable checksum: 87670b01f6c8def5369835011f9cd001

Compiler output:
mm/ldt.c: In function 'ldt_add_entry':
mm/ldt.c:149: internal compiler error: in bitmap_first_set_bit, at bitmap.c:535
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/ccgHytIr.out file, please attach this to
your bugreport.
make[1]: *** [mm/ldt.o] Error 1
make[1]: Leaving directory `/divers/work/ExAmour/kernel/src/arch/i386'
make: *** [install_exAmour] Error 2


Have a great day.


-- 
Rémy SAISSY


-- 
           Summary: Internal compiler error while adding __asm__ statement
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: remy dot saissy at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug c/29119] Internal compiler error while adding __asm__ statement

[remy dot saissy at gmail dot com]

------- Comment #1 from remy dot saissy at gmail dot com  2006-09-17 21:25 -------
Created an attachment (id=12287)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12287&action=view)
The .i file


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1/4.2 Regression] Internal compiler error while adding __asm__ statement

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-09-17 21:57 -------
Reduced testcase:
void ldt_add_entry(void)
{
   __asm__ ("" :: "m"(({unsigned __v; __v;})));
}


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-09-17 21:57:22
               date|                            |
            Summary|Internal compiler error     |[4.0/4.1/4.2 Regression]
                   |while adding __asm__        |Internal compiler error
                   |statement                   |while adding __asm__
                   |                            |statement
   Target Milestone|---                         |4.0.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1/4.2 Regression] Internal compiler error while adding __asm__ statement

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-09-17 22:01 -------
We must had forgot to mark the variable as ADDRESSABLE.
Also this used to work with the C++ front-end in 4.1.x but now does not in
4.2.0.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1/4.2 Regression] Internal compiler error while adding __asm__ statement

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2006-09-18 10:07 -------
I say this should be made invalid.  In fact we already warn about it to become
invalid:

./cc1 -quiet t.c
t.c: In function 'ldt_add_entry':
t.c:3: warning: use of memory input without lvalue in asm operand 0 is
deprecated

A good opportunity to remove this from 4.2 (we warn for this since 3.3!)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1/4.2 Regression] Internal compiler error while adding __asm__ statement

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1/4.2 Regression] Internal compiler error while adding __asm__ statement

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2006-10-11 11:55 -------
Gimplification marks the TARGET_EXPR addressable in

{
  __asm__ __volatile__(""::"m" TARGET_EXPR <D.1873, {
    unsigned int __v;

        unsigned int __v;
    D.1873 = __v;
  }>);
}

while it should mark the gimplified lvalue addressable.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2006-09-17 21:57:22         |2006-10-11 11:55:58
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1/4.2 Regression] Internal compiler error while adding __asm__ statement

[patchapp at dberlin dot org]

------- Comment #6 from patchapp at dberlin dot org  2006-10-11 13:31 -------
Subject: Bug number PR29119

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-10/msg00612.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1 Regression] Internal compiler error while adding __asm__ statement

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2006-10-11 14:03 -------
Fixed on the mainline.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.0/4.1/4.2 Regression]    |[4.0/4.1 Regression]
                   |Internal compiler error     |Internal compiler error
                   |while adding __asm__        |while adding __asm__
                   |statement                   |statement


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1 Regression] Internal compiler error while adding __asm__ statement

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2006-10-11 14:03 -------
Subject: Bug 29119

Author: rguenth
Date: Wed Oct 11 14:03:37 2006
New Revision: 117633

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117633
Log:
2006-10-11  Richard Guenther  <rguenther@suse.de>

        PR inline-asm/29119
        * gimplify.c (gimplify_asm_expr): Mark the gimplified lvalue
        addressable.

        * gcc.dg/torture/pr29119.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr29119.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimplify.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0/4.1 Regression] Internal compiler error while adding __asm__ statement

[rguenth at gcc dot gnu dot org]

------- Comment #9 from rguenth at gcc dot gnu dot org  2006-10-16 11:25 -------
Subject: Bug 29119

Author: rguenth
Date: Mon Oct 16 11:25:18 2006
New Revision: 117783

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117783
Log:
2006-10-16  Richard Guenther  <rguenther@suse.de>

        Backport from mainline:
        2006-10-10  Richard Guenther  <rguenther@suse.de>

        PR inline-asm/29119
        * gimplify.c (gimplify_asm_expr): Mark the gimplified lvalue
        addressable.

        * gcc.dg/torture/pr29119.c: New testcase.

Added:
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/torture/pr29119.c
      - copied unchanged from r117633,
trunk/gcc/testsuite/gcc.dg/torture/pr29119.c
Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/gimplify.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0 Regression] Internal compiler error while adding __asm__ statement

[rguenth at gcc dot gnu dot org]

------- Comment #10 from rguenth at gcc dot gnu dot org  2006-10-16 11:25 -------
Fixed on the 4.1 branch.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|rguenth at gcc dot gnu dot  |unassigned at gcc dot gnu
                   |org                         |dot org
             Status|ASSIGNED                    |NEW
            Summary|[4.0/4.1 Regression]        |[4.0 Regression] Internal
                   |Internal compiler error     |compiler error while adding
                   |while adding __asm__        |__asm__ statement
                   |statement                   |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119

[Bug inline-asm/29119] [4.0 Regression] Internal compiler error while adding __asm__ statement

[gdr at gcc dot gnu dot org]

------- Comment #11 from gdr at gcc dot gnu dot org  2007-02-03 20:16 -------
Fixed in GCC-4.1.2.


-- 

gdr at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.0.4                       |4.1.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29119