[Bug c/67031] New: avr-gcc internal compiler error

["gccbugs at dima dot secretsauce.net" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67031

            Bug ID: 67031
           Summary: avr-gcc internal compiler error
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gccbugs at dima dot secretsauce.net
  Target Milestone: ---

Created attachment 36072
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36072&action=edit
Minimized source to show the failure

Hi. I'm seeing an internal compiler error when building AVR code:

    dima@shorty:$ avr-gcc --std=gnu99 -O3 -mmcu=atxmega16e5 -c tst.c -o bleh.o

    tst.c: In function 'func2':
    tst.c:15:5: warning: implicit declaration of function 'sscanf'
[-Wimplicit-function-declaration]
         sscanf(p1, "", &e, &i, &h, &g, &f);
         ^
    tst.c:15:5: warning: incompatible implicit declaration of built-in function
'sscanf' [enabled by default]
    tst.c:15:5: warning: passing argument 1 of 'sscanf' makes pointer from
integer without a cast [enabled by default]
    tst.c:15:5: note: expected 'const char *' but argument is of type 'int'
    tst.c:17:5: warning: passing argument 1 of 'func2' makes integer from
pointer without a cast [enabled by default]
         func2(j);
         ^
    tst.c:14:5: note: expected 'int' but argument is of type 'int *'
     int func2(int p1) {
         ^
    tst.c: In function 'func':
    tst.c:24:9: warning: passing argument 1 of 'func2' makes integer from
pointer without a cast [enabled by default]
             func2(a.ppp);
             ^
    tst.c:14:5: note: expected 'int' but argument is of type 'int *'
     int func2(int p1) {
         ^
    tst.c:26:1: internal compiler error: in push_reload, at reload.c:1360
     }
     ^
    Please submit a full bug report,
    with preprocessed source if appropriate.
    See <http://gcc.gnu.org/bugs.html> for instructions.


I'm including minimized source to demo this. The compiler I'm using is whatever
is in Debian/unstable now:


    dima@shorty:$ dpkg -l gcc-avr

    ii  gcc-avr                                     1:4.8.1+Atmel3.4.5-1      
amd64                      GNU C compiler (cross compiler for avr)



    dima@shorty:$ avr-gcc --verbose --version

    Using built-in specs.
    COLLECT_GCC=/usr/bin/avr-gcc
    COLLECT_LTO_WRAPPER=/usr/lib/gcc/avr/4.8.1/lto-wrapper
    avr-gcc (GCC) 4.8.1
    Copyright (C) 2013 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.  There is NO
    warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


    Target: avr
    Configured with: ../src/configure -v --enable-languages=c,c++
--prefix=/usr/lib --infodir=/usr/share/info --mandir=/usr/share/man
--bindir=/usr/bin --libexecdir=/usr/lib --libdir=/usr/lib --enable-shared
--with-system-zlib --enable-long-long --enable-nls --without-included-gettext
--disable-libssp --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=avr
    Thread model: single
    gcc version 4.8.1 (GCC) 
    COLLECT_GCC_OPTIONS='-v' '--version'
     /usr/lib/gcc/avr/4.8.1/cc1 -quiet -v help-dummy -quiet -dumpbase
help-dummy -auxbase help-dummy -version --version -o /tmp/cceJxgRU.s
    GNU C (GCC) version 4.8.1 (avr)
            compiled by GNU C version 4.9.2, GMP version 6.0.0, MPFR version
3.1.2-p11, MPC version 1.0.3
    warning: MPFR header version 3.1.2-p11 differs from library version
3.1.2-p3.
    warning: MPC header version 1.0.3 differs from library version 1.0.2.
    GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
    COLLECT_GCC_OPTIONS='-v' '--version'
     /usr/lib/gcc/avr/4.8.1/../../../avr/bin/as --version -o /tmp/ccBrSnpW.o
/tmp/cceJxgRU.s
    GNU assembler (GNU Binutils) 2.24
    Copyright 2013 Free Software Foundation, Inc.
    This program is free software; you may redistribute it under the terms of
    the GNU General Public License version 3 or later.
    This program has absolutely no warranty.
    This assembler was configured for a target of `avr'.
   
COMPILER_PATH=/usr/lib/gcc/avr/4.8.1/:/usr/lib/gcc/avr/4.8.1/:/usr/lib/gcc/avr/:/usr/lib/gcc/avr/4.8.1/:/usr/lib/gcc/avr/:/usr/lib/gcc/avr/4.8.1/../../../avr/bin/
   
LIBRARY_PATH=/usr/lib/gcc/avr/4.8.1/:/usr/lib/gcc/avr/4.8.1/../../../avr/lib/
    COLLECT_GCC_OPTIONS='-v' '--version'
     /usr/lib/gcc/avr/4.8.1/collect2 --version -L/usr/lib/gcc/avr/4.8.1
-L/usr/lib/gcc/avr/4.8.1/../../../avr/lib /tmp/ccBrSnpW.o --start-group -lgcc
-lm -lc --end-group
    collect2 version 4.8.1
    /usr/lib/gcc/avr/4.8.1/../../../avr/bin/ld --version
-L/usr/lib/gcc/avr/4.8.1 -L/usr/lib/gcc/avr/4.8.1/../../../avr/lib
/tmp/ccBrSnpW.o --start-group -lgcc -lm -lc --end-group
    GNU ld (GNU Binutils) 2.24
    Copyright 2013 Free Software Foundation, Inc.
    This program is free software; you may redistribute it under the terms of
    the GNU General Public License version 3 or (at your option) a later
version.
    This program has absolutely no warranty.


Thanks!