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author | Jeff Epler <[email protected]> | 2022-08-30 03:20:04 -0500 |
---|---|---|
committer | GitHub <[email protected]> | 2022-08-30 10:20:04 +0200 |
commit | 9632360caa5e6511b0ec13cb4c55eb64408232b5 (patch) | |
tree | db4e0d47fb8d4918a3f7361647a4afca13da23e0 /keyboards/handwired | |
parent | 2c5aa98143fc1bb76299033042b374b2ce148d93 (diff) | |
download | qmk_firmware-9632360caa5e6511b0ec13cb4c55eb64408232b5.tar.gz qmk_firmware-9632360caa5e6511b0ec13cb4c55eb64408232b5.zip |
Use a macro to compute the size of arrays at compile time (#18044)
* Add ARRAY_SIZE and CEILING utility macros
* Apply a coccinelle patch to use ARRAY_SIZE
* fix up some straggling items
* Fix 'make test:secure'
* Enhance ARRAY_SIZE macro to reject acting on pointers
The previous definition would not produce a diagnostic for
```
int *p;
size_t num_elem = ARRAY_SIZE(p)
```
but the new one will.
* explicitly get definition of ARRAY_SIZE
* Convert to ARRAY_SIZE when const is involved
The following spatch finds additional instances where the array is
const and the division is by the size of the type, not the size of
the first element:
```
@ rule5a using "empty.iso" @
type T;
const T[] E;
@@
- (sizeof(E)/sizeof(T))
+ ARRAY_SIZE(E)
@ rule6a using "empty.iso" @
type T;
const T[] E;
@@
- sizeof(E)/sizeof(T)
+ ARRAY_SIZE(E)
```
* New instances of ARRAY_SIZE added since initial spatch run
* Use `ARRAY_SIZE` in docs (found by grep)
* Manually use ARRAY_SIZE
hs_set is expected to be the same size as uint16_t, though it's made
of two 8-bit integers
* Just like char, sizeof(uint8_t) is guaranteed to be 1
This is at least true on any plausible system where qmk is actually used.
Per my understanding it's universally true, assuming that uint8_t exists:
https://stackoverflow.com/questions/48655310/can-i-assume-that-sizeofuint8-t-1
* Run qmk-format on core C files touched in this branch
Co-authored-by: Stefan Kerkmann <[email protected]>
Diffstat (limited to 'keyboards/handwired')
7 files changed, 9 insertions, 9 deletions
diff --git a/keyboards/handwired/lagrange/keymaps/dpapavas/keymap.c b/keyboards/handwired/lagrange/keymaps/dpapavas/keymap.c index c2eb4406d1..bc5b025b48 100644 --- a/keyboards/handwired/lagrange/keymaps/dpapavas/keymap.c +++ b/keyboards/handwired/lagrange/keymaps/dpapavas/keymap.c @@ -191,8 +191,8 @@ void keyboard_post_init_user(void) { const pin_t pins[] = {D0, D1, D2}; uint8_t i, j; - for (i = 0 ; i < sizeof(pins) / sizeof(pins[0]) + 2 ; i += 1) { - for (j = 0 ; j < sizeof(pins) / sizeof(pins[0]) ; j += 1) { + for (i = 0 ; i < ARRAY_SIZE(pins) + 2 ; i += 1) { + for (j = 0 ; j < ARRAY_SIZE(pins); j += 1) { setPinOutput(pins[j]); writePin(pins[j], (j == i || j == i - 1)); } diff --git a/keyboards/handwired/myskeeb/oled.c b/keyboards/handwired/myskeeb/oled.c index 081ca8395a..3f43590b8e 100644 --- a/keyboards/handwired/myskeeb/oled.c +++ b/keyboards/handwired/myskeeb/oled.c @@ -183,7 +183,7 @@ void add_keylog(uint16_t keycode) { keylog_str[i] = keylog_str[i - 1]; } - if (keycode < (sizeof(code_to_name) / sizeof(char))) { + if (keycode < ARRAY_SIZE(code_to_name)) { keylog_str[0] = pgm_read_byte(&code_to_name[keycode]); } } diff --git a/keyboards/handwired/nicekey/keymaps/default/keymap.c b/keyboards/handwired/nicekey/keymaps/default/keymap.c index d7539a5c17..a4391eaa30 100644 --- a/keyboards/handwired/nicekey/keymaps/default/keymap.c +++ b/keyboards/handwired/nicekey/keymaps/default/keymap.c @@ -116,7 +116,7 @@ PGM_P const sentences[] PROGMEM = { bool process_record_user(uint16_t keycode, keyrecord_t *record) { if (record->event.pressed) { - int sentences_size = sizeof(sentences) / sizeof(sentences[0]); + int sentences_size = ARRAY_SIZE(sentences); int i = rand() % sentences_size; switch (keycode) { diff --git a/keyboards/handwired/onekey/keymaps/chibios_waiting_test/keymap.c b/keyboards/handwired/onekey/keymaps/chibios_waiting_test/keymap.c index ecf67d3b3c..65983c8dd8 100644 --- a/keyboards/handwired/onekey/keymaps/chibios_waiting_test/keymap.c +++ b/keyboards/handwired/onekey/keymaps/chibios_waiting_test/keymap.c @@ -34,11 +34,11 @@ static const uint32_t waiting_values[] = {0, 1, 5, 10, 25, 50, 100, 150, 200, 50 void housekeeping_task_user(void) { static uint32_t last_bench = 0; if (timer_elapsed32(last_bench) > 500) { - for (int i = 0; i < (sizeof(waiting_values) / sizeof(waiting_values[0])); i++) { + for (int i = 0; i < ARRAY_SIZE(waiting_values); i++) { wait_us_polling_with_strobe(waiting_values[i]); wait_us(10); } - for (int i = 0; i < (sizeof(waiting_values) / sizeof(waiting_values[0])); i++) { + for (int i = 0; i < ARRAY_SIZE(waiting_values); i++) { wait_us_yield_with_strobe(waiting_values[i]); wait_us(10); } diff --git a/keyboards/handwired/promethium/keymaps/default/keymap.c b/keyboards/handwired/promethium/keymaps/default/keymap.c index 77f83361e6..fcfcf51f24 100644 --- a/keyboards/handwired/promethium/keymaps/default/keymap.c +++ b/keyboards/handwired/promethium/keymaps/default/keymap.c @@ -55,7 +55,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #endif #include "outputselect.h" #include "led.h" -#define COUNT(x) (sizeof (x) / sizeof (*(x))) +#define COUNT(x) ARRAY_SIZE((x)) #define KC_WWWB KC_WWW_BACK #define KC_WWWF KC_WWW_FORWARD diff --git a/keyboards/handwired/promethium/keymaps/priyadi/keymap.c b/keyboards/handwired/promethium/keymaps/priyadi/keymap.c index 31ce811e53..4df95111a7 100644 --- a/keyboards/handwired/promethium/keymaps/priyadi/keymap.c +++ b/keyboards/handwired/promethium/keymaps/priyadi/keymap.c @@ -57,7 +57,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #include "outputselect.h" #endif #include "led.h" -#define COUNT(x) (sizeof (x) / sizeof (*(x))) +#define COUNT(x) ARRAY_SIZE((x)) #define KC_WWWB KC_WWW_BACK #define KC_WWWF KC_WWW_FORWARD diff --git a/keyboards/handwired/symmetric70_proto/matrix_debug/matrix.c b/keyboards/handwired/symmetric70_proto/matrix_debug/matrix.c index ba0018a70f..7e15761a98 100644 --- a/keyboards/handwired/symmetric70_proto/matrix_debug/matrix.c +++ b/keyboards/handwired/symmetric70_proto/matrix_debug/matrix.c @@ -159,7 +159,7 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) do { MATRIX_DEBUG_DELAY_START(); is_pressed = false; - for (uint8_t i = 0; i < sizeof(delay_ports) / sizeof(pin_t); i++) { + for (uint8_t i = 0; i < ARRAY_SIZE(delay_ports); i++) { # ifdef MATRIX_IO_DELAY_MULSEL writePin(MATRIX_MUL_SELECT, delay_sel[i]); waitInputPinDelay(); |