[Bug gas/14017] New: Bug in symbol arithmetic

[makhaloff at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14017

             Bug #: 14017
           Summary: Bug in symbol arithmetic
           Product: binutils
           Version: 2.23 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gas
        AssignedTo: address@hidden
        ReportedBy: address@hidden
    Classification: Unclassified


Created attachment 6364
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6364
Patch to fix this bug

I got error on this code:

.text
NULL:
PS_8K = 0x40                                   
OFFSET = (System1 - NULL)
SSSSS = (OFFSET + PS_8K)
movl $2,SSSSS
                                         .org 0x2000
System1:

SSSSS will be equal 0x40. But actual value should be 0x2040.

The reason is as follows:
* gas/read.c (pseudo_set): Fixed x=undef+const case (expr_sections is undefined
at this time also)

Example and patch are attached.

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