cmd/asm: use strings.TrimSuffix

Change-Id: If08ce3f8534f5fb7ce97ec124bfeff937e65f63b
Reviewed-on: https://go-review.googlesource.com/c/go/+/435943
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

diff --git a/src/cmd/asm/internal/flags/flags.go b/src/cmd/asm/internal/flags/flags.go
index d5e818223ba1ae480805c6936a8df0179e2248f0..b9a94a0c092541c1677aa8aedcfe0f42e6874e63 100644 (file)
--- a/src/cmd/asm/internal/flags/flags.go
+++ b/src/cmd/asm/internal/flags/flags.go
@@ -84,9 +84,7 @@ func Parse() {
                        flag.Usage()
                }
                input := filepath.Base(flag.Arg(0))
-               if strings.HasSuffix(input, ".s") {
-                       input = input[:len(input)-2]
-               }
+               input = strings.TrimSuffix(input, ".s")
                *OutputFile = fmt.Sprintf("%s.o", input)
        }
 }