ld mishandles R_SPARC_UA32 relocations

[Michael Rauch]

Hi, 

a bug revealed with the use of R_SPARC_UA32 relocations currently prevents 
generating C++ shared libraries. 

The details:

System: NetBSD/sparc 1.5
gcc: 2.95.3
binutils: 2.11.2, emulation elf32_sparc

Take the two attached files, compile it and see it failing:
$ g++ -fPIC -shared -o libclass.so class.cpp --save-temps
$ g++ -L. -R. -lclass -o prog prog.cpp --save-temps
$ ./prog 
./libclass.so: Undefined symbol "" (reloc type = 23, symnum = 9)

This same example works fine using binutils 2.10.1. 

objdump --reloc class.o shows

class.o:     file format elf32-sparc

RELOCATION RECORDS FOR [.eh_frame]:
OFFSET   TYPE              VALUE 
0000001c R_SPARC_UA32      .text

while this is
0000001c R_SPARC_32        .text
for binutils 2.10.1 .

Looking at the source code I tried to find a difference between R_SPARC_32 
and R_SPARC_UA32 handling, found it in bfd/elf32-sparc.c, made the 
behaviour the same and that fixed the problem:

--- /aux/binutils-2.11.2/bfd/elf32-sparc.c      Mon Jun 11 12:04:13 2001
+++ bfd/elf32-sparc.c   Mon Sep 10 18:15:11 2001
@@ -1478,7 +1478,7 @@
                }
              else
                {
-                 if (r_type == R_SPARC_32)
+                 if (r_type == R_SPARC_32 || r_type == R_SPARC_UA32)
                    {
                      outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
                      outrel.r_addend = relocation + rel->r_addend;



Michael