Fix Raspberry Pi Pico `-gc=leaking/none` by soypat · Pull Request #5417 · tinygo-org/tinygo

soypat · 2026-05-25T03:39:16Z

github-actions · 2026-05-25T03:56:29Z

Size difference with the dev branch:

Binary size difference

 flash                          ram
 before   after   diff          before   after   diff
  17812   17792    -20  -0.11%    7568    7568      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/as560x/main.go
  37420   37404    -16  -0.04%    6604    6604      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/pcf8523/
  68760   68744    -16  -0.02%    7436    7436      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/ndir/main_ndir.go
  68456   68440    -16  -0.02%    7404    7404      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/mcp9808/main.go
  43912   43896    -16  -0.04%    7736    7736      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/tmc2209/main.go
  88040   88024    -16  -0.02%    7756    7756      0   0.00% tinygo build -size short -o ./build/test.hex -target=challenger-rp2040 ./examples/net/ntpclient/
  27656   27644    -12  -0.04%   19024   19024      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/waveshare-epd/epd2in66b/main.go
  11732   11720    -12  -0.10%    5968    5968      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/scd4x/main.go
  18316   18308     -8  -0.04%    6784    6784      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/adafruit4650
  23900   23892     -8  -0.03%    5952    5952      0   0.00% tinygo build -size short -o ./build/test.hex -target=metro-rp2350 ./examples/bno08x/i2c/main.go
  13688   13680     -8  -0.06%    5964    5964      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/pca9685/main.go
  11800   11792     -8  -0.07%    5940    5940      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/seesaw/soil-sensor
  13104   13096     -8  -0.06%    5948    5948      0   0.00% tinygo build -size short -o ./build/test.hex -target=qtpy-rp2040 ./examples/seesaw/rotary-encoder
  15272   15264     -8  -0.05%    6012    6012      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico     ./examples/sgp30
  13012   13004     -8  -0.06%    5892    5892      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao-rp2040 ./examples/ssd1306/
  13100   13092     -8  -0.06%    5892    5892      0   0.00% tinygo build -size short -o ./build/test.hex -target=thumby ./examples/ssd1306/
  12320   12312     -8  -0.06%    5952    5952      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/touch/capacitive
  13396   13388     -8  -0.06%    5916    5916      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/qmi8658c/main.go
  12532   12524     -8  -0.06%    5900    5900      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/pcf8591/
  10432   10424     -8  -0.08%    5888    5888      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/xpt2046/main.go
  33152   33144     -8  -0.02%    7408    7408      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/ssd1289/main.go
  12804   12796     -8  -0.06%    6880    6880      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/irremote/main.go
  13460   13452     -8  -0.06%    5964    5964      0   0.00% tinygo build -size short -o ./build/test.hex -target=badger2040 ./examples/uc8151/main.go
  13764   13756     -8  -0.06%    6408    6408      0   0.00% tinygo build -size short -o ./build/test.hex -target=badger2040 ./examples/waveshare-epd/epd2in9v2/main.go
  11552   11544     -8  -0.07%    5908    5908      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/mpu6886/main.go
  11076   11068     -8  -0.07%    5900    5900      0   0.00% tinygo build -size short -o ./build/test.uf2 -target=pico ./examples/mpu9150/main.go
  13064   13056     -8  -0.06%    5936    5936      0   0.00% tinygo build -size short -o ./build/test.hex -target=macropad-rp2040 ./examples/sh1106/macropad_spi
   9936    9928     -8  -0.08%    6372    6372      0   0.00% tinygo build -size short -o ./build/test.hex -target=macropad-rp2040 ./examples/encoders/quadrature-interrupt
  13312   13304     -8  -0.06%    5896    5896      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/tmc5160/main.go
  14028   14020     -8  -0.06%    5956    5956      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/ens160/main.go
  17600   17592     -8  -0.05%    5972    5972      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/si5351/main.go
  22688   22680     -8  -0.04%    7268    7268      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico ./examples/w5500/main.go
 315064  315056     -8  -0.00%   16664   16664      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/websocket/dial/
 156552  156544     -8  -0.01%    9384    9384      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/mqttclient/natiu/
 174816  174808     -8  -0.00%   14516   14516      0   0.00% tinygo build -size short -o ./build/test.hex -target=elecrow-rp2040 -stack-size 8kb ./examples/net/tlsclient/
 120168  120160     -8  -0.01%   12516   12516      0   0.00% tinygo build -size short -o ./build/test.hex -target=elecrow-rp2350 -stack-size 8kb ./examples/net/ntpclient/
  61840   61840      0   0.00%    6528    6528      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/adt7410/main.go
   8764    8764      0   0.00%    5088    5088      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/adxl345/main.go
  13636   13636      0   0.00%    7136    7136      0   0.00% tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/amg88xx
   8924    8924      0   0.00%    5088    5088      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/main.go
  11372   11372      0   0.00%    6928    6928      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/apds9960/proximity/main.go
   9828    9828      0   0.00%    5108    5108      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/itsybitsy-m0/main.go
   7356    7356      0   0.00%    2296    2296      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/at24cx/main.go
   8008    8008      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bh1750/main.go
   7368    7368      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/blinkm/main.go
  71612   71612      0   0.00%    3640    3640      0   0.00% tinygo build -size short -o ./build/test.hex -target=pinetime     ./examples/bma42x/main.go
  65724   65724      0   0.00%    6544    6544      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmi160/main.go
  27664   27664      0   0.00%    5120    5120      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmp180/main.go
  64396   64396      0   0.00%    6568    6568      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/bmp280/main.go
  11816   11816      0   0.00%    5152    5152      0   0.00% tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/bmp388/main.go
   7712    7712      0   0.00%    3336    3336      0   0.00% tinygo build -size short -o ./build/test.hex -target=bluepill ./examples/ds1307/sram/main.go
  21596   21596      0   0.00%    3532    3532      0   0.00% tinygo build -size short -o ./build/test.hex -target=bluepill ./examples/ds1307/time/main.go
  29080   29080      0   0.00%    5316    5316      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/ds3231/alarms/main.go
  42956   42956      0   0.00%    5316    5316      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/ds3231/basic/main.go
   4400    4400      0   0.00%    2256    2256      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/easystepper/main.go
  70472   70472      0   0.00%    7328    7328      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/flash/console/spi
  66832   66832      0   0.00%    9368    9368      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/flash/console/qspi
   7068    7068      0   0.00%    2260    2260      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/gc9a01/main.go
  67636   67636      0   0.00%    6704    6704      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/i2c/main.go
  68336   68336      0   0.00%    6852    6852      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/uart/main.go
   8420    8420      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/hcsr04/main.go
   5528    5528      0   0.00%    2256    2256      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hd44780/customchar/main.go
   5568    5568      0   0.00%    2256    2256      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hd44780/text/main.go
  10376   10376      0   0.00%    5088    5088      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/hd44780i2c/main.go
  14248   14248      0   0.00%    6928    6928      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/hts221/main.go
  15980   15980      0   0.00%    2340    2340      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/hub75/main.go
  10156   10156      0   0.00%    7264    7264      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/basic
  11144   11144      0   0.00%    5224    5224      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/basic
  29436   29436      0   0.00%   38424   38424      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/pyportal_boing
  10188   10188      0   0.00%    7256    7256      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/scroll
  11224   11224      0   0.00%    5216    5216      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/scroll
 263400  263400      0   0.00%   47108   47108      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/slideshow
  10472   10472      0   0.00%    5120    5120      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis3dh/main.go
  13632   13632      0   0.00%    6928    6928      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/lps22hb/main.go
  26188   26188      0   0.00%    2304    2304      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/lsm303agr/main.go
  27860   27860      0   0.00%    7168    7168      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/lsm303dlhc/main.go
  12312   12312      0   0.00%    5128    5128      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/lsm6ds3/main.go
  10020   10020      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mag3110/main.go
   8984    8984      0   0.00%    5120    5120      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp23017/main.go
   9416    9416      0   0.00%    5128    5128      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp23017-multiple/main.go
   9440    9440      0   0.00%    5088    5088      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp3008/main.go
  71852   71852      0   0.00%    6584    6584      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mcp2515/main.go
  27572   27572      0   0.00%    3808    3808      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/microbitmatrix/main.go
  27492   27492      0   0.00%    5852    5852      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit-v2 ./examples/microbitmatrix/main.go
   7464    7464      0   0.00%    5088    5088      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mma8653/main.go
   7368    7368      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/mpu6050/main.go
  76572   76572      0   0.00%    7804    7804      0   0.00% tinygo build -size short -o ./build/test.hex -target=p1am-100 ./examples/p1am/main.go
   6244    6244      0   0.00%    3268    3268      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setbuffer/main.go
   4628    4628      0   0.00%    2260    2260      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setpixel/main.go
   3113    3113      0   0.00%     560     560      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino ./examples/servo
   7988    7988      0   0.00%    7128    7128      0   0.00% tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/shifter/main.go
  57420   57420      0   0.00%    3672    3672      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/sht3x/main.go
  57412   57412      0   0.00%    3680    3680      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/sht4x/main.go
  57420   57420      0   0.00%    3672    3672      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/shtc3/main.go
  12344   12344      0   0.00%    8712    8712      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao-ble ./examples/ssd1306/
   5896    5896      0   0.00%    2260    2260      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/ssd1331/main.go
   6808    6808      0   0.00%    2260    2260      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/st7735/main.go
   6488    6488      0   0.00%    2260    2260      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/st7789/main.go
  16784   16784      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/thermistor/main.go
   9640    9640      0   0.00%    4880    4880      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-bluefruit ./examples/tone
  10136   10136      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/tm1637/main.go
   8816    8816      0   0.00%    7128    7128      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/touch/resistive/fourwire/main.go
  12348   12348      0   0.00%    7324    7324      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/touch/resistive/pyportal_touchpaint/main.go
  15772   15772      0   0.00%    5088    5088      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl53l1x/main.go
  14328   14328      0   0.00%    5088    5088      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl6180x/main.go
  24636   24636      0   0.00%   14076   14076      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-nrf52840-sense ./examples/waveshare-epd/epd1in54/main.go
   6356    6356      0   0.00%    2300    2300      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13/main.go
   5944    5944      0   0.00%    2292    2292      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13x/main.go
   6248    6248      0   0.00%    2300    2300      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd4in2/main.go
   7096    7096      0   0.00%    5120    5120      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/ws2812
   5510    5510      0   0.00%    8918    8918      0   0.00% '-xesppie' is not a recognized feature for this target (ignoring feature)
  62780   62780      0   0.00%    6296    6296      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-nrf52840 ./examples/is31fl3731/main.go
   1997    1997      0   0.00%     600     600      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino   ./examples/ws2812
   1488    1488      0   0.00%     182     182      0   0.00% tinygo build -size short -o ./build/test.hex -target=digispark ./examples/ws2812
  32068   32068      0   0.00%    5120    5120      0   0.00% tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/bme280/main.go
  16392   16392      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/microphone/main.go
  11740   11740      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/buzzer/main.go
  12268   12268      0   0.00%    5120    5120      0   0.00% tinygo build -size short -o ./build/test.hex -target=trinket-m0 ./examples/veml6070/main.go
   6796    6796      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l293x/simple/main.go
   8716    8716      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l293x/speed/main.go
   6772    6772      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l9110x/simple/main.go
   9120    9120      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/l9110x/speed/main.go
   7272    7272      0   0.00%    3308    3308      0   0.00% tinygo build -size short -o ./build/test.hex -target=nucleo-f103rb ./examples/shiftregister/main.go
   7032    7032      0   0.00%    2256    2256      0   0.00% '-xesppie' is not a recognized feature for this target (ignoring feature)
  13280   13280      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis2mdl/main.go
  11248   11248      0   0.00%    5104    5104      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/max72xx/main.go
  77060   77060      0   0.00%    6680    6680      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/dht/main.go
  71424   71424      0   0.00%    6688    6688      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/alarm/
   7176    7176      0   0.00%    5080    5080      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/clkout/
  70860   70860      0   0.00%    6688    6688      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/time/
  71256   71256      0   0.00%    6688    6688      0   0.00% tinygo build -size short -o ./build/test.hex -target=xiao ./examples/pcf8563/timer/
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6402028 6401680   -348  -0.00% 1049404 1049404      0   0.00%

Copilot

Pull request overview

This PR fixes build failures on RP2040/RP2350 targets (Raspberry Pi Pico / Pico 2 family) when compiling with -gc=none or -gc=leaking, addressing #5416 by ensuring required GC-related symbols are present even in non-collecting GC modes. It also extends the smoketest matrix to exercise a leaking-GC build on Pico.

Changes:

Add gcScanState and a no-op scanCurrentStack() stub for gc=none and gc=leaking builds.
Switch ZLP sending to reuse a shared empty slice instead of []byte{} at call sites.
Add a smoketest build for -target=pico -gc=leaking.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/runtime/gc_none.go	Adds missing symbols for `-gc=none` builds.
src/runtime/gc_leaking.go	Adds missing symbols for `-gc=leaking` builds.
src/machine/machine_rp2040_usb.go	Introduces a shared empty buffer and uses it for EP0 address ACK.
src/machine/machine_rp2_usb.go	Uses the shared empty buffer for ZLP transmission.
GNUmakefile	Adds a leaking-GC Pico build to smoketest.

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jwetzell · 2026-05-25T15:33:11Z


 func SendZlp() {
-	sendUSBPacket(0, []byte{})
+	sendUSBPacket(0, empty[:])


@soypat this seems like an actual problem, that empty variable declared in machine_rp2040_usb.go is used here but not actually available here.

See my comment above, that would also fix this issue.

 const needsStaticHeap = true

+var gcScanState atomic.Uint32
+
+func scanCurrentStack() {}
+
 // Ever-incrementing pointer: no memory is freed.


 	$(TINYGO) build -size short -o test.hex -target=pico                examples/blinky1
 	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=pico -gc=leaking    examples/blinky1
+	@$(MD5SUM) test.hex


aykevl

Looks reasonable, but see the comments for a small cleanup.

aykevl · 2026-05-25T15:54:24Z


 func SendZlp() {
-	sendUSBPacket(0, []byte{})
+	sendUSBPacket(0, empty[:])


See my comment above, that would also fix this issue.

aykevl · 2026-05-26T13:27:44Z

Thank you!

soypat added 2 commits May 25, 2026 00:43

support -gc=none/leaking

bb2528b

add smoketest to catch leaking gc builds OK

a174ed8

soypat force-pushed the pico-gc=leaking branch from cd8c43d to a174ed8 Compare May 25, 2026 03:43

dkegel-fastly requested a review from Copilot May 25, 2026 04:02

Copilot started reviewing on behalf of dkegel-fastly May 25, 2026 04:02 View session

Copilot AI reviewed May 25, 2026

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aykevl reviewed May 25, 2026

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aykevl mentioned this pull request May 25, 2026

Optimize zero-sized allocation #5420

Open

simpler approach

ebcd705

aykevl merged commit d348d8b into dev May 26, 2026
18 checks passed

aykevl deleted the pico-gc=leaking branch May 26, 2026 13:27

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Fix Raspberry Pi Pico `-gc=leaking/none`#5417

Fix Raspberry Pi Pico `-gc=leaking/none`#5417
aykevl merged 3 commits into
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pico-gc=leaking

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soypat commented May 25, 2026 •

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