cmd/evm: change error msg output to stderr (#17118)

* cmd/evm: change error msg output to stderr

* cmd/evm: fix some linter error

1 files changed, 14 insertions, 14 deletions

diff --git a/cmd/evm/runner.go b/cmd/evm/runner.go
index 7138a9ddd..fed41f53a 100644
--- a/cmd/evm/runner.go
+++ b/cmd/evm/runner.go
@@ -128,13 +128,13 @@ func runCmd(ctx *cli.Context) error {
 		if ctx.GlobalString(CodeFileFlag.Name) == "-" {
 			//Try reading from stdin
 			if hexcode, err = ioutil.ReadAll(os.Stdin); err != nil {
-				fmt.Printf("Could not load code from stdin: %v\n", err)
+				fmt.Fprintf(ctx.App.ErrWriter, "Could not load code from stdin: %v\n", err)
 				os.Exit(1)
 			}
 		} else {
 			// Codefile with hex assembly
 			if hexcode, err = ioutil.ReadFile(ctx.GlobalString(CodeFileFlag.Name)); err != nil {
-				fmt.Printf("Could not load code from file: %v\n", err)
+				fmt.Fprintf(ctx.App.ErrWriter, "Could not load code from file: %v\n", err)
 				os.Exit(1)
 			}
 		}
@@ -172,11 +172,11 @@ func runCmd(ctx *cli.Context) error {
 	if cpuProfilePath := ctx.GlobalString(CPUProfileFlag.Name); cpuProfilePath != "" {
 		f, err := os.Create(cpuProfilePath)
 		if err != nil {
-			fmt.Println("could not create CPU profile: ", err)
+			fmt.Fprintf(ctx.App.ErrWriter, "could not create CPU profile: %v\n", err)
 			os.Exit(1)
 		}
 		if err := pprof.StartCPUProfile(f); err != nil {
-			fmt.Println("could not start CPU profile: ", err)
+			fmt.Fprintf(ctx.App.ErrWriter, "could not start CPU profile: %v\n", err)
 			os.Exit(1)
 		}
 		defer pprof.StopCPUProfile()
@@ -200,17 +200,17 @@ func runCmd(ctx *cli.Context) error {
 
 	if ctx.GlobalBool(DumpFlag.Name) {
 		statedb.IntermediateRoot(true)
-		fmt.Println(string(statedb.Dump()))
+		fmt.Fprintln(ctx.App.Writer, string(statedb.Dump()))
 	}
 
 	if memProfilePath := ctx.GlobalString(MemProfileFlag.Name); memProfilePath != "" {
 		f, err := os.Create(memProfilePath)
 		if err != nil {
-			fmt.Println("could not create memory profile: ", err)
+			fmt.Fprintf(ctx.App.ErrWriter, "could not create memory profile: %v\n", err)
 			os.Exit(1)
 		}
 		if err := pprof.WriteHeapProfile(f); err != nil {
-			fmt.Println("could not write memory profile: ", err)
+			fmt.Fprintf(ctx.App.ErrWriter, "could not create memory profile: %v\n", err)
 			os.Exit(1)
 		}
 		f.Close()
@@ -218,17 +218,17 @@ func runCmd(ctx *cli.Context) error {
 
 	if ctx.GlobalBool(DebugFlag.Name) {
 		if debugLogger != nil {
-			fmt.Fprintln(os.Stderr, "#### TRACE ####")
-			vm.WriteTrace(os.Stderr, debugLogger.StructLogs())
+			fmt.Fprintln(ctx.App.ErrWriter, "#### TRACE ####")
+			vm.WriteTrace(ctx.App.ErrWriter, debugLogger.StructLogs())
 		}
-		fmt.Fprintln(os.Stderr, "#### LOGS ####")
-		vm.WriteLogs(os.Stderr, statedb.Logs())
+		fmt.Fprintln(ctx.App.ErrWriter, "#### LOGS ####")
+		vm.WriteLogs(ctx.App.ErrWriter, statedb.Logs())
 	}
 
 	if ctx.GlobalBool(StatDumpFlag.Name) {
 		var mem goruntime.MemStats
 		goruntime.ReadMemStats(&mem)
-		fmt.Fprintf(os.Stderr, `evm execution time: %v
+		fmt.Fprintf(ctx.App.ErrWriter, `evm execution time: %v
 heap objects:       %d
 allocations:        %d
 total allocations:  %d
@@ -238,9 +238,9 @@ Gas used:           %d
 `, execTime, mem.HeapObjects, mem.Alloc, mem.TotalAlloc, mem.NumGC, initialGas-leftOverGas)
 	}
 	if tracer == nil {
-		fmt.Printf("0x%x\n", ret)
+		fmt.Fprintf(ctx.App.Writer, "0x%x\n", ret)
 		if err != nil {
-			fmt.Printf(" error: %v\n", err)
+			fmt.Fprintf(ctx.App.ErrWriter, " error: %v\n", err)
 		}
 	}