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

[remy dot saissy at gmail dot com]

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