enable unusedFunction #1878

0x41head · 2024-02-18T17:51:27Z

adeebshihadeh · 2024-02-18T18:35:15Z

tests/misra/suppressions.txt

@@ -15,6 +15,9 @@ unmatchedSuppression
 # All interrupt handlers are defined, including ones we don't use
 unusedFunction:*/interrupt_handlers*.h

+# REGISTER_INTERRUPT defined in interrupt_handlers.h
+unknownMacro:*/gmlan_alt.h


why does this fix it?

used this to suppress the unknownMacro error that was being generated. Nothing to do with the unusedFunction error. Need to figure out if this is a false positive.

adeebshihadeh · 2024-02-18T19:05:22Z

tests/misra/test_misra.sh

-#printf "\n${GREEN}** UNUSED ALL CODE **${NC}\n"
-#cppcheck --enable=unusedFunction --quiet $PANDA_DIR/board/
+printf "\n${GREEN}** UNUSED ALL CODE **${NC}\n"
+cppcheck --enable=unusedFunction --quiet $PANDA_DIR/board/main.c 


hmm, also not sure how this works now. it needs to also analyze the bootstub and jungle builds

Seems like a bug from cppchecker's side. All the unused function seems to have been be generated by board/main.c as we can see in previous CI runs.
Running cppcheck $PANDA_OPTS -DSTM32H7 -DUID_BASE $PANDA_DIR/board/main.c $PANDA_DIR/board/jungle/main.c $PANDA_DIR/board/jungle/bootstub.c also seems to remove the unused function error ( it also adds another unknownMacro error )

adeebshihadeh · 2024-02-18T19:07:46Z

We should also add a test case for unusedFunction here since it takes a very unique code path.

panda/tests/misra/test_mutation.py

Line 38 in 00fab5e

patterns = [

adeebshihadeh · 2024-02-19T18:32:04Z

Not sure how the new test case is passing. It didn't catch either of these:

batman:panda$ git diff .
diff --git a/board/bootstub.c b/board/bootstub.c
index aee665e7..16d18903 100644
--- a/board/bootstub.c
+++ b/board/bootstub.c
@@ -28,6 +28,10 @@ void fail(void) {
   soft_flasher_start();
 }

+void abc(void) {
+
+}
+
 // know where to sig check
 extern void *_app_start[];

diff --git a/board/main.c b/board/main.c
index 061a9138..37f6c236 100644
--- a/board/main.c
+++ b/board/main.c
@@ -32,6 +32,10 @@

 // ********************* Serial debugging *********************

+void unusedfunction(void) {
+
+}
+
 bool check_started(void) {
   bool started = current_board->check_ignition() || ignition_can;
   ignition_seen |= started;

0x41head · 2024-02-20T11:56:25Z

hmm.. defining pre-processor symbols like seems to invoke the unusedFunction error.
cppcheck --enable=unusedFunction --quiet -DSTM32F4 -DUID_BASE -DPANDA -DSTM32H7 $PANDA_DIR/board/

Any particular reason you undefined it @adeebshihadeh ?

Log:

/home/aryan/Desktop/open-source/panda/board/jungle/main.c:169:3: error: There is an unknown macro here somewhere. Configuration is required. If REGISTER_INTERRUPT is a macro then please configure it. [unknownMacro]
  REGISTER_INTERRUPT(TICK_TIMER_IRQ, tick_handler, 10U, FAULT_INTERRUPT_RATE_TICK)
  ^
/home/aryan/Desktop/open-source/panda/board/drivers/can_common.h:200:0: style: The function 'can_set_forwarding' is never used. [unusedFunction]
void can_set_forwarding(uint8_t from, uint8_t to) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/gpio.h:71:0: style: The function 'gpio_set_all_output' is never used. [unusedFunction]
void gpio_set_all_output(const gpio_t *pins, uint8_t num_pins, bool enabled) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/gpio.h:77:0: style: The function 'gpio_set_bitmask' is never used. [unusedFunction]
void gpio_set_bitmask(const gpio_t *pins, uint8_t num_pins, uint32_t bitmask) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/uart.h:154:0: style: The function 'putui' is never used. [unusedFunction]
void putui(uint32_t i) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/watchdog.h:10:0: style: The function 'watchdog_init' is never used. [unusedFunction]
void watchdog_init(WatchdogTimeout timeout) {
^
/home/aryan/Desktop/open-source/panda/board/main.c:35:0: style: The function 'test' is never used. [unusedFunction]
void test(void) {}
^
/home/aryan/Desktop/open-source/panda/board/safety.h:110:0: style: The function 'gen_crc_lookup_table_16' is never used. [unusedFunction]
void gen_crc_lookup_table_16(uint16_t poly, uint16_t crc_lut[]) {
^
/home/aryan/Desktop/open-source/panda/board/safety/safety_hyundai_common.h:90:0: style: The function 'hyundai_common_canfd_compute_checksum' is never used. [unusedFunction]
uint32_t hyundai_common_canfd_compute_checksum(const CANPacket_t *to_push) {
^
/home/aryan/Desktop/open-source/panda/board/stm32h7/lldac.h:1:0: style: The function 'dac_init' is never used. [unusedFunction]
void dac_init(DAC_TypeDef *dac, uint8_t channel, bool dma) {
^
/home/aryan/Desktop/open-source/panda/board/stm32h7/lldac.h:30:0: style: The function 'dac_set' is never used. [unusedFunction]
void dac_set(DAC_TypeDef *dac, uint8_t channel, uint32_t value) {

adeebshihadeh · 2024-02-20T15:41:49Z

H7 and F4 should be mutually exclusive.

0x41head · 2024-02-20T17:10:39Z

cppcheck --enable=unusedFunction --quiet -DUID_BASE -DPANDA -DSTM32F4 $PANDA_DIR/board/main.c generates

/home/aryan/Desktop/open-source/panda/board/jungle/main.c:169:3: error: There is an unknown macro here somewhere. Configuration is required. If REGISTER_INTERRUPT is a macro then please configure it. [unknownMacro]
  REGISTER_INTERRUPT(TICK_TIMER_IRQ, tick_handler, 10U, FAULT_INTERRUPT_RATE_TICK)
  ^
/home/aryan/Desktop/open-source/panda/board/bootstub_declarations.h:16:0: style: The function 'uart_init' is never used. [unusedFunction]
void uart_init(uart_ring *q, int baud) { UNUSED(q); UNUSED(baud); }
^
/home/aryan/Desktop/open-source/panda/board/drivers/can_common.h:200:0: style: The function 'can_set_forwarding' is never used. [unusedFunction]
void can_set_forwarding(uint8_t from, uint8_t to) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/gpio.h:71:0: style: The function 'gpio_set_all_output' is never used. [unusedFunction]
void gpio_set_all_output(const gpio_t *pins, uint8_t num_pins, bool enabled) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/gpio.h:77:0: style: The function 'gpio_set_bitmask' is never used. [unusedFunction]
void gpio_set_bitmask(const gpio_t *pins, uint8_t num_pins, uint32_t bitmask) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/uart.h:154:0: style: The function 'putui' is never used. [unusedFunction]
void putui(uint32_t i) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/watchdog.h:10:0: style: The function 'watchdog_init' is never used. [unusedFunction]
void watchdog_init(WatchdogTimeout timeout) {
^
/home/aryan/Desktop/open-source/panda/board/main.c:34:0: style: The function 'test' is never used. [unusedFunction]
void test(void){}
^
/home/aryan/Desktop/open-source/panda/board/safety.h:110:0: style: The function 'gen_crc_lookup_table_16' is never used. [unusedFunction]
void gen_crc_lookup_table_16(uint16_t poly, uint16_t crc_lut[]) {
^
/home/aryan/Desktop/open-source/panda/board/safety/safety_hyundai_common.h:90:0: style: The function 'hyundai_common_canfd_compute_checksum' is never used. [unusedFunction]
uint32_t hyundai_common_canfd_compute_checksum(const CANPacket_t *to_push) {
^
/home/aryan/Desktop/open-source/panda/board/stm32fx/lluart.h:48:0: style: The function 'uart_send_break' is never used. [unusedFunction]
void uart_send_break(uart_ring *u) {
^
/home/aryan/Desktop/open-source/panda/board/stm32fx/lluart.h:81:0: style: The function 'USART2_IRQ_Handler' is never used. [unusedFunction]
void USART2_IRQ_Handler(void) { uart_interrupt_handler(&uart_ring_debug); }

cppcheck --enable=unusedFunction --quiet -DUID_BASE -DPANDA -DSTM32H7 $PANDA_DIR/board/ generates

** UNUSED ALL CODE **
/home/aryan/Desktop/open-source/panda/board/jungle/main.c:169:3: error: There is an unknown macro here somewhere. Configuration is required. If REGISTER_INTERRUPT is a macro then please configure it. [unknownMacro]
  REGISTER_INTERRUPT(TICK_TIMER_IRQ, tick_handler, 10U, FAULT_INTERRUPT_RATE_TICK)
  ^
/home/aryan/Desktop/open-source/panda/board/drivers/can_common.h:200:0: style: The function 'can_set_forwarding' is never used. [unusedFunction]
void can_set_forwarding(uint8_t from, uint8_t to) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/gpio.h:71:0: style: The function 'gpio_set_all_output' is never used. [unusedFunction]
void gpio_set_all_output(const gpio_t *pins, uint8_t num_pins, bool enabled) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/gpio.h:77:0: style: The function 'gpio_set_bitmask' is never used. [unusedFunction]
void gpio_set_bitmask(const gpio_t *pins, uint8_t num_pins, uint32_t bitmask) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/uart.h:154:0: style: The function 'putui' is never used. [unusedFunction]
void putui(uint32_t i) {
^
/home/aryan/Desktop/open-source/panda/board/drivers/watchdog.h:10:0: style: The function 'watchdog_init' is never used. [unusedFunction]
void watchdog_init(WatchdogTimeout timeout) {
^
/home/aryan/Desktop/open-source/panda/board/main.c:34:0: style: The function 'test' is never used. [unusedFunction]
void test(void){}
^
/home/aryan/Desktop/open-source/panda/board/stm32h7/lldac.h:1:0: style: The function 'dac_init' is never used. [unusedFunction]
void dac_init(DAC_TypeDef *dac, uint8_t channel, bool dma) {
^
/home/aryan/Desktop/open-source/panda/board/stm32h7/lldac.h:30:0: style: The function 'dac_set' is never used. [unusedFunction]
void dac_set(DAC_TypeDef *dac, uint8_t channel, uint32_t value) {
^

I guess we can add both cases to our misra tests since they generate slightly different results.

0x41head added 8 commits February 8, 2024 16:00

fixed uninitialized data error

5b5ad4f

Merge branch 'master' of https://github.com/commaai/panda

1ded177

Merge branch 'master' of https://github.com/commaai/panda

7d65226

Merge branch 'master' of https://github.com/commaai/panda

6e43a5c

Merge branch 'master' of https://github.com/commaai/panda

d2a6765

fix for unusedFunction

bc1c597

remove other changes

b87ccdc

remove check-library

9e0c80f

adeebshihadeh reviewed Feb 18, 2024

View reviewed changes

works locally

2df6f1d

0x41head added 5 commits February 23, 2024 15:00

improvements

de1b0f7

minor bug

1e64785

works locally

a259f71

mutation test fix

d9cb201

increase timeout for test_misra

5d14870

0x41head requested a review from adeebshihadeh February 24, 2024 11:05

Merge branch 'master' of github.com:commaai/panda into unusedFunction

64b8479

dzid26 mentioned this pull request May 25, 2024

Finish MISRA coverage #1794

Open

dzid26 mentioned this pull request Jun 4, 2024

Enable unusedFunction checks #1970

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enable unusedFunction #1878

enable unusedFunction #1878

0x41head commented Feb 18, 2024

adeebshihadeh Feb 18, 2024

0x41head Feb 18, 2024

adeebshihadeh Feb 18, 2024

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adeebshihadeh commented Feb 20, 2024

0x41head commented Feb 20, 2024

enable unusedFunction #1878

Are you sure you want to change the base?

enable unusedFunction #1878

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