[Bug ada/18217] [4.0 Regression] Ada Bootstrap failures on powerpc-darwin with undefined symbol (__Unwind_fallback_frame_state_for)

[ro at techfak dot uni-bielefeld dot de]

------- Additional Comments From ro at techfak dot uni-bielefeld dot de  2004-11-19 22:33 -------
Subject: Re:  [4.0 Regression] Ada Bootstrap failures on powerpc-darwin with undefined symbol (__Unwind_fallback_frame_state_for)

As a workaround, I've changed all instances of -lgcc -lgcc_eh in the specs
file to -lgcc_eh -lgcc -lgcc_eh.  With this change, the bootstrap got
further along:

../../xgcc -c -I./ -I../rts -I. -I/vol/gnu/src/gcc/gcc-dist/gcc/ada -B../../ -O2 -g -O2 -gnatpg -gnata -I- /vol/gnu/src/gcc/gcc-dist/gcc/ada/makegpr.adb
+===========================GNAT BUG DETECTED==============================+
| 4.0.0 20041119 (experimental) (powerpc-apple-darwin7.6.0) Bus error      |
| Error detected at makegpr.adb:4159:23                                    |

Program received signal EXC_BAD_ACCESS, Could not access memory.
0x004e9650 in initializer_zerop (init=0x4469dcc0) at /vol/gnu/src/gcc/gcc-dist/gcc/tree.c:5834
(gdb) where
#0  0x004e9650 in initializer_zerop (init=0x4469dcc0) at /vol/gnu/src/gcc/gcc-dist/gcc/tree.c:5834
#1  0x004e97dc in initializer_zerop (init=0x4469dcc0) at /vol/gnu/src/gcc/gcc-dist/gcc/tree.c:5870
#2  0x004e97dc in initializer_zerop (init=0x4469dcc0) at /vol/gnu/src/gcc/gcc-dist/gcc/tree.c:5870
#3  0x004fb574 in assemble_variable (decl=0xc659a8, top_level=115, at_end=6317412, dont_output_data=1147788480) at /vol/gnu/src/gcc/gcc-dist/gcc/varasm.c:1706
#4  0x00503118 in rest_of_decl_compilation (decl=0x4469dcc0, top_level=6317412, at_end=12999080) at /vol/gnu/src/gcc/gcc-dist/gcc/passes.c:235
#5  0x00507bfc in expand_one_var (var=0x4469dcc0, toplevel=100 'd') at /vol/gnu/src/gcc/gcc-dist/gcc/cfgexpand.c:559
#6  0x005094ac in tree_expand_cfg () at /vol/gnu/src/gcc/gcc-dist/gcc/cfgexpand.c:791
#7  0x0024896c in execute_pass_list (pass=0x44698210) at /vol/gnu/src/gcc/gcc-dist/gcc/tree-optimize.c:511
#8  0x00248ca8 in tree_rest_of_compilation (fndecl=0x0) at /vol/gnu/src/gcc/gcc-dist/gcc/tree-optimize.c:643
#9  0x005330bc in cgraph_expand_function (node=0x44699880) at /vol/gnu/src/gcc/gcc-dist/gcc/cgraphunit.c:822
#10 0x0053407c in cgraph_optimize () at /vol/gnu/src/gcc/gcc-dist/gcc/cgraphunit.c:1689
#11 0x004d6528 in toplev_main (argc=12717220, argv=0xc265b4) at /vol/gnu/src/gcc/gcc-dist/gcc/toplev.c:985
#12 0x00002584 in _start (argc=16, argv=0xbffff93c, envp=0xbffff980) at /SourceCache/Csu/Csu-47/crt.c:267
#13 0x8fe1a558 in __dyld__dyld_start ()

The file compiles without problems at -O0.  Is this a known bug, too?

	Rainer


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18217