Bootstrap Failure on i686-pc-linux-gnu

[Ranjit Mathew <rmathew at gmail dot com>]

Hi Richard,

  I'm seeing a bootstrap failure on i686-pc-linux-gnu on today's
mainline with --disable-checking and I think it could be related to
the patch you recently checked in. I configured the build as:

$GCC_SRC_DIR/configure --prefix=$HOME/gcc --enable-languages=c,c++,java \
--disable-nls --disable-checking --disable-libmudflap \
--disable-debug --enable-threads=posix --enable-__cxa_atexit

Here's what I see:

(the weird GDB behaviour is also worrisome, BTW - bad debug info
output?)

---------------------------------- 8< ----------------------------------
(gdb) r
Starting program: /home/ranmath/src/gcc/build/gcc/stage2/cc1 -quiet -I. -I. -I/h
ome/ranmath/src/gcc/gcc-20041201/gcc -I/home/ranmath/src/gcc/gcc-20041201/gcc/.
-I/home/ranmath/src/gcc/gcc-20041201/gcc/../include -I/home/ranmath/src/gcc/gcc-
20041201/gcc/../libcpp/include -iprefix /home/ranmath/src/gcc/build/gcc/stage2/.
./lib/gcc/i686-pc-linux-gnu/4.0.0/ -isystem ./include -DIN_GCC -DHAVE_CONFIG_H /
home/ranmath/src/gcc/gcc-20041201/gcc/dwarf2out.c -quiet -dumpbase dwarf2out.c -
mtune=pentiumpro -auxbase-strip dwarf2out.o -g -O2 -W -Wall -Wwrite-strings -Wst
rict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macr
os -Wold-style-definition -Werror -fomit-frame-pointer -o /tmp/ccLgDVu5.s
Breakpoint 3 at 0x827666
Breakpoint 4 at 0x826315

Program received signal SIGSEGV, Segmentation fault.
0x080c064b in compute_points_to_and_addr_escape (ai=0x8a74458)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/tree-ssa-alias.c:749
749                   bitmap_set_bit (ai->written_vars, ann->uid);
(gdb) bt
#0  0x080c064b in compute_points_to_and_addr_escape (ai=0x8a74458)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/tree-ssa-alias.c:749
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0317.
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0317.
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0317.
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0317.
#1  0x080c0ccb in compute_may_aliases ()
    at /home/ranmath/src/gcc/gcc-20041201/gcc/tree-ssa-alias.c:305
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0ab2.
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0ab2.
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0ab2.
During symbol reading, Incomplete CFI data; unspecified registers at 0x080c0ab2.
#2  0x0809d43d in execute_pass_list (pass=0x89752e0)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/tree-optimize.c:516
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
#3  0x0809d4cd in execute_pass_list (pass=0x8430a00)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/tree-optimize.c:554
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d308.
#4  0x0809d692 in tree_rest_of_compilation (fndecl=0xb6c372b8)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/tree-optimize.c:652
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d597.
During symbol reading, Incomplete CFI data; unspecified registers at 0x0809d597.
#5  0x0805a6e6 in c_expand_body (fndecl=0xb6c372b8)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/c-decl.c:6387
#6  0x0830b33d in cgraph_expand_function (node=0xb6acc7b4)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/cgraphunit.c:822
#7  0x0830bddd in cgraph_optimize ()
    at /home/ranmath/src/gcc/gcc-20041201/gcc/cgraphunit.c:1689
#8  0x082ce697 in toplev_main (argc=1952542062, argv=0xbfffcfb4)
    at /home/ranmath/src/gcc/gcc-20041201/gcc/toplev.c:1005
#9  0x0081279d in __libc_start_main () from /lib/tls/libc.so.6
#10 0x080498f1 in _start ()
(gdb)
---------------------------------- 8< ----------------------------------

Thanks,
Ranjit.