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[cli] fix false alarm when printing empty line (#6499)

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The OpenThread cli may print false alarms when calling
`OutputLine("")`. Fix accordingly.
This commit is contained in:
Jiacheng Guo
2021-04-21 22:16:04 -07:00
committed by GitHub
parent 01186d6610
commit 6fa74b7674
1 changed files with 1 additions and 1 deletions
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examples/apps/cli/cli_uart.cpp
+1 -1
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@@ -332,7 +332,7 @@ static int CliUartOutput(void *aContext, const char *aFormat, va_list aArguments
if (sTxLength == 0) if (sTxLength == 0)
{ {
rval = vsnprintf(sTxBuffer, kTxBufferSize, aFormat, aArguments); rval = vsnprintf(sTxBuffer, kTxBufferSize, aFormat, aArguments);
VerifyOrExit(rval > 0 && rval < kTxBufferSize, otLogWarnPlat("Failed to format CLI output `%s`", aFormat)); VerifyOrExit(rval >= 0 && rval < kTxBufferSize, otLogWarnPlat("Failed to format CLI output `%s`", aFormat));
sTxHead = 0; sTxHead = 0;
sTxLength = static_cast<uint16_t>(rval); sTxLength = static_cast<uint16_t>(rval);
sSendLength = 0; sSendLength = 0;