[PATCH] gdb/testsuite/lib/dwarf.exp: fix addr_size parameter comments

[Simon Marchi <simon.marchi@efficios.com>]

The comments modified in this patch claim that the addr_size parameters
can take the value 32 or 64 (suggesting the value is in bits).  In fact,
the expected value is in bytes, either 4 or 8.

The actual value in the DWARF info is in bytes.  And we can see that the
default values used (if addr_size == "default") are:

	if {$_cu_addr_size == "default"} {
	    if {[is_64_target]} {
		set _cu_addr_size 8
	    } else {
		set _cu_addr_size 4
	    }
	}

gdb/testsuite/ChangeLog:

	* lib/dwarf.exp (Dwarf::cu, Dwarf::tu, Dwarf::lines): Change valid
	values in documentation for addr_size to 4 and 8.

Change-Id: I4a02dca2bb7992198864e545ef099f020f54ff2f
---
 gdb/testsuite/lib/dwarf.exp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gdb/testsuite/lib/dwarf.exp b/gdb/testsuite/lib/dwarf.exp
index a7dbe25fd458..5448f0ff5df6 100644
--- a/gdb/testsuite/lib/dwarf.exp
+++ b/gdb/testsuite/lib/dwarf.exp
@@ -1026,7 +1026,7 @@ namespace eval Dwarf {
     #                default = 0 (32-bit)
     # version n    - DWARF version number to emit
     #                default = 4
-    # addr_size n  - the size of addresses, 32, 64, or default
+    # addr_size n  - the size of addresses, 4, 8, or default
     #                default = default
     # fission 0|1  - boolean indicating if generating Fission debug info
     #                default = 0
@@ -1117,7 +1117,7 @@ namespace eval Dwarf {
     #                default = 0 (32-bit)
     # version n    - DWARF version number to emit
     #                default = 4
-    # addr_size n  - the size of addresses, 32, 64, or default
+    # addr_size n  - the size of addresses, 4, 8, or default
     #                default = default
     # fission 0|1  - boolean indicating if generating Fission debug info
     #                default = 0
@@ -1298,7 +1298,7 @@ namespace eval Dwarf {
     #                default = 0 (32-bit)
     # version n    - DWARF version number to emit
     #                default = 4
-    # addr_size n  - the size of addresses, 32, 64, or default
+    # addr_size n  - the size of addresses, 4, 8, or default
     #                default = default
     #
     # LABEL is the label of the current unit (which is probably
-- 
2.26.2