Patch from Ian Lance Taylor <ian@airs.com>:

The pc386 linker scripts omits .gnu.linkonce.r* sections.  It's not a
    big deal, but they should be treated like .rodata sections.  ELF
    versions of g++ generate them for static constants defined in template
    classes, such as string::npos.

c/src/lib/libbsp/i386/pc386/startup/linkcmds

@@ -62,6 +62,7 @@ SECTIONS
 
     _rodata_start = . ;
     *(.rodata)
+    *(.gnu.linkonce.r*)
     _erodata = ALIGN( 0x10 ) ;
 
     _etext = ALIGN( 0x10 ) ;