I have IDE 1.6.5
When making some changes to my project and compiling I have the below warnings
In file included from integrated2_07.ino:61:0:
C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\EEPROM/EEPROM.h:43:30: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
operator const uint8_t() const { return **this; }
^
C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\EEPROM/EEPROM.h:92:26: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
operator const int() const { return index; }
^
In file included from C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:7:0:
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp: In member function 'uint16_t DNSClient::ProcessResponse(uint16_t, IPAddress&)':
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:285:58: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
uint16_t header_flags = htons(*((uint16_t*)&header[2]));
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\utility/util.h:4:22: note: in definition of macro 'htons'
#define htons(x) ( ((x)<< 8 & 0xFF00) | \
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:285:58: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
uint16_t header_flags = htons(*((uint16_t*)&header[2]));
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\utility/util.h:5:22: note: in definition of macro 'htons'
((x)>> 8 & 0x00FF) )
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:287:50: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
if ( ( iRequestId != (*((uint16_t*)&header[0])) ) ||
^
In file included from C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:7:0:
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:304:57: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
uint16_t answerCount = htons(*((uint16_t*)&header[6]));
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\utility/util.h:4:22: note: in definition of macro 'htons'
#define htons(x) ( ((x)<< 8 & 0xFF00) | \
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:304:57: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
uint16_t answerCount = htons(*((uint16_t*)&header[6]));
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\utility/util.h:5:22: note: in definition of macro 'htons'
((x)>> 8 & 0x00FF) )
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:313:58: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
for (uint16_t i =0; i < htons(*((uint16_t*)&header[4])); i++)
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\utility/util.h:4:22: note: in definition of macro 'htons'
#define htons(x) ( ((x)<< 8 & 0xFF00) | \
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\Dns.cpp:313:58: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
for (uint16_t i =0; i < htons(*((uint16_t*)&header[4])); i++)
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\utility/util.h:5:22: note: in definition of macro 'htons'
((x)>> 8 & 0x00FF) )
^
C:\Program Files (x86)\Arduino\libraries\Ethernet\src\utility\socket.cpp:365:6: warning: unused parameter 's' [-Wunused-parameter]
void flush(SOCKET s) {
^
Then, if i recompile (control R again) I "only" have the 1st two warnings [/color]
In file included from integrated2_07.ino:61:0:
C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\EEPROM/EEPROM.h:43:30: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
operator const uint8_t() const { return **this; }
^
C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\EEPROM/EEPROM.h:92:26: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
operator const int() const { return index; }
^
I am only asking why doesn't the compiler output always the same messages?