[llvm-commits] [llvm] r78872 - /llvm/trunk/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp

[Chris Lattner]

On Aug 23, 2009, at 3:15 PM, Dale Johannesen wrote:

>
> On Aug 23, 2009, at 2:15 PM, Chris Lattner wrote:
>>
>> However, it looks like the linker doesn't reject two .o files that
>> contain redefinitions of the same label with either -r or -dylib.  I
>> tried linking together two .o files that contained this .s file:
>>
>> lFoo:
>>  .byte 1
>>
>> Shouldn't I get a redefinition error?  Is the weak merging semantics
>> just a special case magic behavior that is unlike normal strong  
>> symbols?
>
> Assembler symbols are not globl or private_extern unless you so  
> declare them.  This is the equivalent of compiling "static Foo"  
> twice.  If you add private_extern, as in my original example, you do  
> get a link error.
>

Ah, right!  I always get confused by that.  Thanks Dale, I'll update  
the dox.

-Chris