DWARF Standard

Section 6.4.2.4, pg 181
p181 6.4.2.4 Row State Instructions describes the required actions for 
DW_CFA_remember_state and DW_CFA_restore_state:

  DW_CFA_remember_state
  The DW_CFA_remember_state instruction takes no operands. The required 
  action is to push the set of rules for every register onto an implicit stack.
  
  DW_CFA_restore_state
  The DW_CFA_restore_state instruction takes no operands. The required action
  is to pop the set of rules off the implicit stack and place them in the current row.

The description of DW_CFA_remember_state should take the current CFA into 
account. Suggested change:

  DW_CFA_remember_state
  The DW_CFA_remember_state instruction takes no operands. The required 
  action is to push the set of rules for **the current CFA and** every 
  register onto an implicit stack.

The description of DW_CFA_restore_state can remain as is as "the set of 
rules" clearly includes the current CFA described by DW_CFA_remember_state.

The stack implementations of libunwind src/dwarf/Gparser.c, gcc 
libgcc/unwind-dw2.c, and llvm-project libunwind/src/DwarfParser.hpp all 
include the current CFA in the implicit stack.

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