Bug in gas, with expressions in macros

[Peter Jansen]

Hi

I have a very strange bug in binutils/gas, using gas 2.10.91 or 2.11.2 
or the current CVS, when using the .if directive inside macros and listings.

assembling the following code:

---------------------------------------------------

;
       .macro VEC name
         .if ( . - .__start_of_init__ )
           .string "Hello"
         .endif
       .endm

.__start_of_init__:

       VEC _vector_1

---------------------------------------------------

with

address@hidden gas-test]$ as -o gcrt1.o gcrt1.s --verbose -an
GNU assembler version 2.10.91 (i386-redhat-linux) using BFD version 
2.10.91.0.2
gcrt1.s: Assembler messages:
gcrt1.s:10: Error: non-constant expression in ".if" statement

I get an error of a non-contant expression.

but if I turn listings off (without the -an) then it assembles ok, ie

address@hidden gas-test]$ as -o gcrt1.o gcrt1.s --verbose
GNU assembler version 2.10.91 (i386-redhat-linux) using BFD version 
2.10.91.0.2

no error.

The same happens with version 2.11.92 20011119 of gas.

Has anyone seen this behavoiur or know what is going on?

It appears that in gas/cond.c, the function 's_if' gets the wrong 
operator type (X_op is 20 and not 2) but I cannot see what this has to 
do with turning listings on or off.

--
Peter Jansen
Smart Container
Level 1, NIC Building
Eveleigh
NSW       1430
AUSTRALIA