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Current cvs 3.2 can't build current cvs binutils.
- From: Graham Stott <graham dot stott at btinternet dot com>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 14 Jul 2002 00:49:05 +0100
- Subject: Current cvs 3.2 can't build current cvs binutils.
All,
Has anyone else recently tried buliding a x86-x-powerpc-eabi cross toolchain using the
uberbaum tree? I find it fails when compiling gas/config/ppc-toc.c due to an abort in
simplfy_subreg. The abort occurs because byte is 4 and GET_MODE_SIZE (innermode) is 4.
This all worked at the begining of last week so I suspect it probably has something to
do with the recent SUBREG changes by joern.
Here's a testcase distilled from gas/config/ppc-toc.c, compile with either -O1 or -O2
--------------------------------------------------------
typedef unsigned long valueT;
valueT
md_apply_fix3 (valueT *valP)
{
valueT value = * valP;
return (((value) >> 32) & 0xffff);
}
----------------------------------------------------------
The testcase is itself a bit suspect in that it's invoking undefined behaviour by.shifting
by an amount >= bits in type, but it's derived directly from code in gas/config/ppc-toc.c
I'll do some more digging and identify which patch triggers the abort.
Cheers
Graham