Fixed error found by the free coverity tool (https://scan.coverity.com/)
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Please find the latest report on new defect(s) introduced to ErikZalm/Marlin found with Coverity Scan.
Defect(s) Reported-by: Coverity Scan
Showing 15 of 15 defect(s)
** CID 59629: Unchecked return value (CHECKED_RETURN)
/Marlin_main.cpp: 2154 in process_commands()()
** CID 59630: Operands don't affect result (CONSTANT_EXPRESSION_RESULT)
/Applications/Arduino.app/Contents/Resources/Java/hardware/arduino/cores/arduino/Tone.cpp: 319 in tone(unsigned char, unsigned int, unsigned long)()
** CID 59631: Missing break in switch (MISSING_BREAK)
/Marlin_main.cpp: 1187 in process_commands()()
** CID 59632: Missing break in switch (MISSING_BREAK)
/Marlin_main.cpp: 1193 in process_commands()()
** CID 59633: Out-of-bounds write (OVERRUN)
/temperature.cpp: 914 in disable_heater()()
** CID 59634: Out-of-bounds write (OVERRUN)
/temperature.cpp: 913 in disable_heater()()
** CID 59635: Out-of-bounds read (OVERRUN)
/temperature.cpp: 626 in analog2temp(int, unsigned char)()
** CID 59636: Out-of-bounds read (OVERRUN)
/temperature.cpp: 620 in analog2temp(int, unsigned char)()
** CID 59637: Out-of-bounds write (OVERRUN)
/temperature.cpp: 202 in PID_autotune(float, int, int)()
** CID 59638: Out-of-bounds read (OVERRUN)
/temperature.cpp: 214 in PID_autotune(float, int, int)()
** CID 59639: Out-of-bounds write (OVERRUN)
/Marlin_main.cpp: 2278 in process_commands()()
** CID 59640: Out-of-bounds read (OVERRUN)
/Marlin_main.cpp: 1802 in process_commands()()
** CID 59641: Uninitialized scalar field (UNINIT_CTOR)
/Applications/Arduino.app/Contents/Resources/Java/libraries/LiquidCrystal/LiquidCrystal.cpp: 51 in LiquidCrystal::LiquidCrystal(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)()
** CID 59642: Uninitialized scalar field (UNINIT_CTOR)
/Applications/Arduino.app/Contents/Resources/Java/libraries/LiquidCrystal/LiquidCrystal.cpp: 45 in LiquidCrystal::LiquidCrystal(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)()
** CID 59643: Uninitialized scalar field (UNINIT_CTOR)
/Applications/Arduino.app/Contents/Resources/Java/libraries/LiquidCrystal/LiquidCrystal.cpp: 32 in LiquidCrystal::LiquidCrystal(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)()
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*** CID 59629: Unchecked return value (CHECKED_RETURN)
/Marlin_main.cpp: 2154 in process_commands()()
2148 }
2149 #endif
2150 }
2151 }
2152 break;
2153 case 85: // M85
CID 59629: Unchecked return value (CHECKED_RETURN)
Calling "code_seen" without checking return value (as is done elsewhere 66 out of 67 times).
2154 code_seen('S');
2155 max_inactive_time = code_value() * 1000;
2156 break;
2157 case 92: // M92
2158 for(int8_t i=0; i < NUM_AXIS; i++)
2159 {
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*** CID 59630: Operands don't affect result (CONSTANT_EXPRESSION_RESULT)
/Applications/Arduino.app/Contents/Resources/Java/hardware/arduino/cores/arduino/Tone.cpp: 319 in tone(unsigned char, unsigned int, unsigned long)()
313 else
314 {
315 // two choices for the 16 bit timers: ck/1 or ck/64
316 ocr = F_CPU / frequency / 2 - 1;
317
318 prescalarbits = 0b001;
CID 59630: Operands don't affect result (CONSTANT_EXPRESSION_RESULT)
"ocr > 65535U" is always false regardless of the values of its operands. This occurs as the logical operand of if.
319 if (ocr > 0xffff)
320 {
321 ocr = F_CPU / frequency / 2 / 64 - 1;
322 prescalarbits = 0b011;
323 }
324
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*** CID 59631: Missing break in switch (MISSING_BREAK)
/Marlin_main.cpp: 1187 in process_commands()()
1181 case 2: // G2 - CW ARC
1182 if(Stopped == false) {
1183 get_arc_coordinates();
1184 prepare_arc_move(true);
1185 return;
1186 }
CID 59631: Missing break in switch (MISSING_BREAK)
The above case falls through to this one.
1187 case 3: // G3 - CCW ARC
1188 if(Stopped == false) {
1189 get_arc_coordinates();
1190 prepare_arc_move(false);
1191 return;
1192 }
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*** CID 59632: Missing break in switch (MISSING_BREAK)
/Marlin_main.cpp: 1193 in process_commands()()
1187 case 3: // G3 - CCW ARC
1188 if(Stopped == false) {
1189 get_arc_coordinates();
1190 prepare_arc_move(false);
1191 return;
1192 }
CID 59632: Missing break in switch (MISSING_BREAK)
The above case falls through to this one.
1193 case 4: // G4 dwell
1194 LCD_MESSAGEPGM(MSG_DWELL);
1195 codenum = 0;
1196 if(code_seen('P')) codenum = code_value(); // milliseconds to wait
1197 if(code_seen('S')) codenum = code_value() * 1000; // seconds to wait
1198
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*** CID 59633: Out-of-bounds write (OVERRUN)
/temperature.cpp: 914 in disable_heater()()
908 WRITE(HEATER_0_PIN,LOW);
909 #endif
910 #endif
911
912 #if defined(TEMP_1_PIN) && TEMP_1_PIN > -1
913 target_temperature[1]=0;
CID 59633: Out-of-bounds write (OVERRUN)
Overrunning array "soft_pwm" of 1 bytes at byte offset 1 using index "1".
914 soft_pwm[1]=0;
915 #if defined(HEATER_1_PIN) && HEATER_1_PIN > -1
916 WRITE(HEATER_1_PIN,LOW);
917 #endif
918 #endif
919
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*** CID 59634: Out-of-bounds write (OVERRUN)
/temperature.cpp: 913 in disable_heater()()
907 #if defined(HEATER_0_PIN) && HEATER_0_PIN > -1
908 WRITE(HEATER_0_PIN,LOW);
909 #endif
910 #endif
911
912 #if defined(TEMP_1_PIN) && TEMP_1_PIN > -1
CID 59634: Out-of-bounds write (OVERRUN)
Overrunning array "target_temperature" of 1 2-byte elements at element index 1 (byte offset 2) using index "1".
913 target_temperature[1]=0;
914 soft_pwm[1]=0;
915 #if defined(HEATER_1_PIN) && HEATER_1_PIN > -1
916 WRITE(HEATER_1_PIN,LOW);
917 #endif
918 #endif
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*** CID 59635: Out-of-bounds read (OVERRUN)
/temperature.cpp: 626 in analog2temp(int, unsigned char)()
620 if(heater_ttbl_map[e] != NULL)
621 {
622 float celsius = 0;
623 uint8_t i;
624 short (*tt)[][2] = (short (*)[][2])(heater_ttbl_map[e]);
625
CID 59635: Out-of-bounds read (OVERRUN)
Overrunning array "heater_ttbllen_map" of 1 bytes at byte offset 1 using index "e" (which evaluates to 1).
626 for (i=1; i<heater_ttbllen_map[e]; i++)
627 {
628 if (PGM_RD_W((*tt)[i][0]) > raw)
629 {
630 celsius = PGM_RD_W((*tt)[i-1][1]) +
631 (raw - PGM_RD_W((*tt)[i-1][0])) *
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*** CID 59636: Out-of-bounds read (OVERRUN)
/temperature.cpp: 620 in analog2temp(int, unsigned char)()
614 if (e == 0)
615 {
616 return 0.25 * raw;
617 }
618 #endif
619
CID 59636: Out-of-bounds read (OVERRUN)
Overrunning array "heater_ttbl_map" of 1 2-byte elements at element index 1 (byte offset 2) using index "e" (which evaluates to 1).
620 if(heater_ttbl_map[e] != NULL)
621 {
622 float celsius = 0;
623 uint8_t i;
624 short (*tt)[][2] = (short (*)[][2])(heater_ttbl_map[e]);
625
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*** CID 59637: Out-of-bounds write (OVERRUN)
/temperature.cpp: 202 in PID_autotune(float, int, int)()
196 {
197 soft_pwm_bed = (MAX_BED_POWER)/2;
198 bias = d = (MAX_BED_POWER)/2;
199 }
200 else
201 {
CID 59637: Out-of-bounds write (OVERRUN)
Overrunning array "soft_pwm" of 1 bytes at byte offset 1 using index "extruder" (which evaluates to 1).
202 soft_pwm[extruder] = (PID_MAX)/2;
203 bias = d = (PID_MAX)/2;
204 }
205
206
207
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*** CID 59638: Out-of-bounds read (OVERRUN)
/temperature.cpp: 214 in PID_autotune(float, int, int)()
208
209 for(;;) {
210
211 if(temp_meas_ready == true) { // temp sample ready
212 updateTemperaturesFromRawValues();
213
CID 59638: Out-of-bounds read (OVERRUN)
Overrunning array "current_temperature" of 1 4-byte elements at element index 1 (byte offset 4) using index "extruder" (which evaluates to 1).
214 input = (extruder<0)?current_temperature_bed:current_temperature[extruder];
215
216 max=max(max,input);
217 min=min(min,input);
218 if(heating == true && input > temp) {
219 if(millis() - t2 > 5000) {
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*** CID 59639: Out-of-bounds write (OVERRUN)
/Marlin_main.cpp: 2278 in process_commands()()
2272 tmp_extruder = code_value();
2273 if(tmp_extruder >= EXTRUDERS) {
2274 SERIAL_ECHO_START;
2275 SERIAL_ECHO(MSG_M200_INVALID_EXTRUDER);
2276 }
2277 }
CID 59639: Out-of-bounds write (OVERRUN)
Overrunning array "volumetric_multiplier" of 1 4-byte elements at element index 1 (byte offset 4) using index "tmp_extruder" (which evaluates to 1).
2278 volumetric_multiplier[tmp_extruder] = 1 / area;
2279 }
2280 break;
2281 case 201: // M201
2282 for(int8_t i=0; i < NUM_AXIS; i++)
2283 {
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*** CID 59640: Out-of-bounds read (OVERRUN)
/Marlin_main.cpp: 1802 in process_commands()()
1796 int pin_status = code_value();
1797 int pin_number = LED_PIN;
1798 if (code_seen('P') && pin_status >= 0 && pin_status <= 255)
1799 pin_number = code_value();
1800 for(int8_t i = 0; i < (int8_t)sizeof(sensitive_pins); i++)
1801 {
CID 59640: Out-of-bounds read (OVERRUN)
Overrunning array "sensitive_pins" of 28 2-byte elements at element index 55 (byte offset 110) using index "i" (which evaluates to 55).
1802 if (sensitive_pins[i] == pin_number)
1803 {
1804 pin_number = -1;
1805 break;
1806 }
1807 }
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*** CID 59641: Uninitialized scalar field (UNINIT_CTOR)
/Applications/Arduino.app/Contents/Resources/Java/libraries/LiquidCrystal/LiquidCrystal.cpp: 51 in LiquidCrystal::LiquidCrystal(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)()
45 }
46
47 LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t enable,
48 uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3)
49 {
50 init(1, rs, 255, enable, d0, d1, d2, d3, 0, 0, 0, 0);
CID 59641: Uninitialized scalar field (UNINIT_CTOR)
Non-static class member "_initialized" is not initialized in this constructor nor in any functions that it calls.
51 }
52
53 void LiquidCrystal::init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable,
54 uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
55 uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7)
56 {
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*** CID 59642: Uninitialized scalar field (UNINIT_CTOR)
/Applications/Arduino.app/Contents/Resources/Java/libraries/LiquidCrystal/LiquidCrystal.cpp: 45 in LiquidCrystal::LiquidCrystal(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)()
39 }
40
41 LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable,
42 uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3)
43 {
44 init(1, rs, rw, enable, d0, d1, d2, d3, 0, 0, 0, 0);
CID 59642: Uninitialized scalar field (UNINIT_CTOR)
Non-static class member "_initialized" is not initialized in this constructor nor in any functions that it calls.
45 }
46
47 LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t enable,
48 uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3)
49 {
50 init(1, rs, 255, enable, d0, d1, d2, d3, 0, 0, 0, 0);
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*** CID 59643: Uninitialized scalar field (UNINIT_CTOR)
/Applications/Arduino.app/Contents/Resources/Java/libraries/LiquidCrystal/LiquidCrystal.cpp: 32 in LiquidCrystal::LiquidCrystal(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)()
26
27 LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable,
28 uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
29 uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7)
30 {
31 init(0, rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7);
CID 59643: Uninitialized scalar field (UNINIT_CTOR)
Non-static class member "_initialized" is not initialized in this constructor nor in any functions that it calls.
32 }
33
34 LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t enable,
35 uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
36 uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7)
37 {
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