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Suppress MISRA C:2012 rule 21.6 for snprintf (#877)

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Suppress MISRA C:2012 rule 21.6 for snprintf
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chinglee-iot 2023-12-07 18:51:14 +08:00 committed by GitHub
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commit d95b05ea5f
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2 changed files with 32 additions and 5 deletions
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9
MISRA.md
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@ -107,6 +107,15 @@ _Ref 11.5.5_
because data storage buffers are implemented as uint8_t arrays for the
ease of sizing, alignment and access.
#### Rule 21.6
MISRA C-2012 Rule 21.6: The Standard Library input/output functions shall not
be used.
_Ref 21.6.1_
- The Standard Library function snprintf is used in vTaskListTasks and
vTaskGetRunTimeStatistics APIs, both of which are utility functions only and
are not considered part of core kernel implementation.
### MISRA configuration

28
tasks.c
View file

@ -7348,6 +7348,9 @@ static void prvResetNextTaskUnblockTime( void )
{
/* Write the rest of the string. */
#if ( ( configUSE_CORE_AFFINITY == 1 ) && ( configNUMBER_OF_CORES > 1 ) )
/* MISRA Ref 21.6.1 [snprintf for utility] */
/* More details at: https://github.com/FreeRTOS/FreeRTOS-Kernel/blob/main/MISRA.md#rule-216 */
/* coverity[misra_c_2012_rule_21_6_violation] */
iSnprintfReturnValue = snprintf( pcWriteBuffer,
uxBufferLength - uxConsumedBufferLength,
"\t%c\t%u\t%u\t%u\t0x%x\r\n",
@ -7355,15 +7358,18 @@ static void prvResetNextTaskUnblockTime( void )
( unsigned int ) pxTaskStatusArray[ x ].uxCurrentPriority,
( unsigned int ) pxTaskStatusArray[ x ].usStackHighWaterMark,
( unsigned int ) pxTaskStatusArray[ x ].xTaskNumber,
( unsigned int ) pxTaskStatusArray[ x ].uxCoreAffinityMask ); /*lint !e586 sprintf() allowed as this is compiled with many compilers and this is a utility function only - not part of the core kernel implementation. */
( unsigned int ) pxTaskStatusArray[ x ].uxCoreAffinityMask );
#else /* ( ( configUSE_CORE_AFFINITY == 1 ) && ( configNUMBER_OF_CORES > 1 ) ) */
/* MISRA Ref 21.6.1 [snprintf for utility] */
/* More details at: https://github.com/FreeRTOS/FreeRTOS-Kernel/blob/main/MISRA.md#rule-216 */
/* coverity[misra_c_2012_rule_21_6_violation] */
iSnprintfReturnValue = snprintf( pcWriteBuffer,
uxBufferLength - uxConsumedBufferLength,
"\t%c\t%u\t%u\t%u\r\n",
cStatus,
( unsigned int ) pxTaskStatusArray[ x ].uxCurrentPriority,
( unsigned int ) pxTaskStatusArray[ x ].usStackHighWaterMark,
( unsigned int ) pxTaskStatusArray[ x ].xTaskNumber ); /*lint !e586 sprintf() allowed as this is compiled with many compilers and this is a utility function only - not part of the core kernel implementation. */
( unsigned int ) pxTaskStatusArray[ x ].xTaskNumber );
#endif /* ( ( configUSE_CORE_AFFINITY == 1 ) && ( configNUMBER_OF_CORES > 1 ) ) */
uxCharsWrittenBySnprintf = prvSnprintfReturnValueToCharsWritten( iSnprintfReturnValue, uxBufferLength - uxConsumedBufferLength );
@ -7496,21 +7502,27 @@ static void prvResetNextTaskUnblockTime( void )
{
#ifdef portLU_PRINTF_SPECIFIER_REQUIRED
{
/* MISRA Ref 21.6.1 [snprintf for utility] */
/* More details at: https://github.com/FreeRTOS/FreeRTOS-Kernel/blob/main/MISRA.md#rule-216 */
/* coverity[misra_c_2012_rule_21_6_violation] */
iSnprintfReturnValue = snprintf( pcWriteBuffer,
uxBufferLength - uxConsumedBufferLength,
"\t%lu\t\t%lu%%\r\n",
pxTaskStatusArray[ x ].ulRunTimeCounter,
ulStatsAsPercentage );
}
#else
#else /* ifdef portLU_PRINTF_SPECIFIER_REQUIRED */
{
/* sizeof( int ) == sizeof( long ) so a smaller
* printf() library can be used. */
/* MISRA Ref 21.6.1 [snprintf for utility] */
/* More details at: https://github.com/FreeRTOS/FreeRTOS-Kernel/blob/main/MISRA.md#rule-216 */
/* coverity[misra_c_2012_rule_21_6_violation] */
iSnprintfReturnValue = snprintf( pcWriteBuffer,
uxBufferLength - uxConsumedBufferLength,
"\t%u\t\t%u%%\r\n",
( unsigned int ) pxTaskStatusArray[ x ].ulRunTimeCounter,
( unsigned int ) ulStatsAsPercentage ); /*lint !e586 sprintf() allowed as this is compiled with many compilers and this is a utility function only - not part of the core kernel implementation. */
( unsigned int ) ulStatsAsPercentage );
}
#endif /* ifdef portLU_PRINTF_SPECIFIER_REQUIRED */
}
@ -7520,6 +7532,9 @@ static void prvResetNextTaskUnblockTime( void )
* consumed less than 1% of the total run time. */
#ifdef portLU_PRINTF_SPECIFIER_REQUIRED
{
/* MISRA Ref 21.6.1 [snprintf for utility] */
/* More details at: https://github.com/FreeRTOS/FreeRTOS-Kernel/blob/main/MISRA.md#rule-216 */
/* coverity[misra_c_2012_rule_21_6_violation] */
iSnprintfReturnValue = snprintf( pcWriteBuffer,
uxBufferLength - uxConsumedBufferLength,
"\t%lu\t\t<1%%\r\n",
@ -7529,10 +7544,13 @@ static void prvResetNextTaskUnblockTime( void )
{
/* sizeof( int ) == sizeof( long ) so a smaller
* printf() library can be used. */
/* MISRA Ref 21.6.1 [snprintf for utility] */
/* More details at: https://github.com/FreeRTOS/FreeRTOS-Kernel/blob/main/MISRA.md#rule-216 */
/* coverity[misra_c_2012_rule_21_6_violation] */
iSnprintfReturnValue = snprintf( pcWriteBuffer,
uxBufferLength - uxConsumedBufferLength,
"\t%u\t\t<1%%\r\n",
( unsigned int ) pxTaskStatusArray[ x ].ulRunTimeCounter ); /*lint !e586 sprintf() allowed as this is compiled with many compilers and this is a utility function only - not part of the core kernel implementation. */
( unsigned int ) pxTaskStatusArray[ x ].ulRunTimeCounter );
}
#endif /* ifdef portLU_PRINTF_SPECIFIER_REQUIRED */
}