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Re: 3.4 PATCH: Fix IRIX 6 bootstrap failure
> From: Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
> > (Still dying in cp/decl2.c though.)
> Indeed: this could be worked around by backing out revision 1.267 of
> fold-const.c (which caused bootstrap failures on all 64-bit platforms).
> The patch has been reverted in the meantime.
Ok I'm past that, my irix6.5 box is back to bootstrapville. However
I'm getting a bootstrap failure in stage2 building libgcc2 on irix6.2:
> libgcc2.c: In function `__floatdidf':
> libgcc2.c:1251: internal compiler error: Bus error
It's dying in fold:
> GNU C version 3.4 20030630 (experimental) (mips-sgi-irix6.2)
> compiled by GNU C version 3.4 20030630 (experimental).
> GGC heuristics: --param ggc-min-expand=63 --param
> Program received signal SIGSEGV, Segmentation fault.
> 0x10320044 in fold (expr=0x1041e9b0) at
> 5218 if (TREE_CODE (TREE_OPERAND (t, 0)) == NOP_EXPR
> (gdb) bt
> #0 0x10320044 in fold (expr=0x1041e9b0) at ../../egcc-CVS20030629/gcc/fold-const.c:5218
> #1 0x1006eccc in build_binary_op (code=PLUS_EXPR, orig_op0=0x4172380, orig_op1=0x41755c0, convert_p=76)
> at ../../egcc-CVS20030629/gcc/c-typeck.c:2566
> #2 0x10074b90 in build_modify_expr (lhs=0x4172380, modifycode=PLUS_EXPR, rhs=0x41755c0)
> at ../../egcc-CVS20030629/gcc/c-typeck.c:3767
> #3 0x100406d0 in yyparse () at c-parse.y:601
> #4 0x10099e04 in c_common_parse_file (set_yydebug=2147428224) at ../../egcc-CVS20030629/gcc/c-opts.c:1179
> #5 0x100f1550 in compile_file () at ../../egcc-CVS20030629/gcc/toplev.c:2070
> #6 0x100f8690 in do_compile () at ../../egcc-CVS20030629/gcc/toplev.c:4960
> #7 0x100f8760 in toplev_main (argc=18, argv=0x7fff2ee4) at ../../egcc-CVS20030629/gcc/toplev.c:4989
> #8 0x100c6134 in main (argc=2147428224, argv=0xc8) at ../../egcc-CVS20030629/gcc/main.c:37
Since stage1 cc1 compiles libgcc2 fine, I thought it might be a
miscompilation somewhere in stage2 cc1. So I substituted
stage1/fold-const.o and relinked cc1. By doing that the compilation
succeeds. It's now into stage3, (but will probably die again in the
I don't know when this happened, my last successful irix6.2 bootstrap
on mainline was a few weeks ago:
I was wondering if you or anyone else with irix6.2 has seen this also
and/or has any suggestions.
Kaveh R. Ghazi email@example.com