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authordm4 <sunrisedm4@gmail.com>2018-04-06 18:43:36 +0800
committerFelix Lange <fjl@users.noreply.github.com>2018-04-06 18:43:36 +0800
commit3ebcf92b423e67b58a72a3fc126449e4e97bc4c8 (patch)
tree2e01dc3042fd6fbbeed7ef9c983744629acb5527 /core
parentc43792a42cad46a15ee00417d52bd3859a98500c (diff)
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cmd/evm: print vm output when debug flag is on (#16326)
Diffstat (limited to 'core')
-rw-r--r--core/vm/logger.go7
1 files changed, 7 insertions, 0 deletions
diff --git a/core/vm/logger.go b/core/vm/logger.go
index 4c820d8b5..dde1903bf 100644
--- a/core/vm/logger.go
+++ b/core/vm/logger.go
@@ -45,6 +45,7 @@ type LogConfig struct {
DisableMemory bool // disable memory capture
DisableStack bool // disable stack capture
DisableStorage bool // disable storage capture
+ Debug bool // print output during capture end
Limit int // maximum length of output, but zero means unlimited
}
@@ -184,6 +185,12 @@ func (l *StructLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost ui
func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error {
l.output = output
l.err = err
+ if l.cfg.Debug {
+ fmt.Printf("0x%x\n", output)
+ if err != nil {
+ fmt.Printf(" error: %v\n", err)
+ }
+ }
return nil
}