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Re: g++ compiler problem on IBM RS6000
References: <1993Jan5.191313.6049@news2.cis.umn.edu>
Reply-To: hoberoi@limerick.cbs.umn.edu


I finally figured out the problem It is reproducible
on our machine The example is at the end of this message

This is the description of the problem I posted :
--------xxxxx---------------------------------------------
Well I went back and reinstalled gcc2.2.2 and libg++2.2

Problem 1. assembler code problem

with g++ 2.3.3

	.extern .error__C6StringPCc
	.csect _Data.rw_MPlex.rw_cc_Data.ro_MPlex.ro_cc 	I@[RO]
								 ^^^^^^^^^

and with g++ 2.2.2

	.extern .error__C6StringPCc
	.csect _Data.rw_MPlex.rw_cc_Data.ro_MPlex.ro_cc \[RO]
	.align 2

 								^^^ note that there are 
	some control characters here
Solution: (both 2.3.3 and 2.2.2
	compile with S flag, hand edit file, assemble and the program
works !!!


Problem 2. undefined symbols

the problems with the undefined symbols

g++ 2.3.3 libg++.2.3

.__ls__FR7ostreamPCc
.__ls__FR7ostreamf


g++ 2.2.2 libg++2.2.2

no undefined symbols
Successs !!

Next step, Compile libg++2.2.2 with gcc 2.3.3 and see if the ostream 
stuff still shows up
--------------------------------------------------------------------

************************************************* 10 Jan 92
Ok Guess what I know what causes the problem I may be all wrong but
what the heck....

try 
genclass fooo ref MPlex
genclass fooo ref Plex
genclass fooo ref defs

do the mandatory edit to fooo.defs.h
then 
g++ -c fooo.MPlex.cc
watch them errors.
next 
g++ -S fooo.MPlex.cc

look at the assembly file there is the ^H and some blanks next to the 
.csect _fooo ........ [RO]


What causes this ? 
A base of 4 or 5 characters. REALLY it is true. I tried the following
strings in place of 
fooo 
aaaa 
aaaaa 
bbbb 
bbbbb
Goat
 
all give the same error.
Odd :) 

I have tried this with gcc 2.2.2 anf libg++2.2

himanshu ---
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