[Bug gas/26001] New: PDP11 gas confuses register names and symbols

[casner at acm dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26001

            Bug ID: 26001
           Summary: PDP11 gas confuses register names and symbols
           Product: binutils
           Version: 2.35 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: casner at acm dot org
  Target Milestone: ---

Attempting to assemble the instruction

    jsr pc,sprintf

results in error message "Too many operands".  This occurs because "sp" is
interpreted as a register name and so "rintf" is considered excess.  Not to
mention that "jsr pc,sp" is not a valid instruction anyway.  But the failure
would also occur with "mov r0,space" where "mov r0,sp" would be valid.

It's hard to believe that this bug was present since the PDP11 code was added
in 2001, but perhaps the C compiler always prefixes symbols with . or _ so this
bug would not have been exposed.

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