cmd/compile: do not emit an extra debug_line entry for the end of seq addr
Uses DW_LNS_advance_pc directly, instead of calling putpclcdelta
because the latter will create a new debug_line entry for the end of
sequence address.
Fixes #42484
Change-Id: Ib6355605cac101b9bf37a3b4961ab0cee678a839
Reviewed-on: https://go-review.googlesource.com/c/go/+/268937
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
diff --git a/src/cmd/internal/obj/dwarf.go b/src/cmd/internal/obj/dwarf.go
index 328fb03..87c62e2 100644
--- a/src/cmd/internal/obj/dwarf.go
+++ b/src/cmd/internal/obj/dwarf.go
@@ -104,7 +104,8 @@
// GDB will assign a line number of zero the last row in the line
// table, which we don't want.
lastlen := uint64(s.Size - (lastpc - s.Func().Text.Pc))
- putpclcdelta(ctxt, dctxt, lines, lastlen, 0)
+ dctxt.AddUint8(lines, dwarf.DW_LNS_advance_pc)
+ dwarf.Uleb128put(dctxt, lines, int64(lastlen))
dctxt.AddUint8(lines, 0) // start extended opcode
dwarf.Uleb128put(dctxt, lines, 1)
dctxt.AddUint8(lines, dwarf.DW_LNE_end_sequence)
