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Make init() run before C++ static initializers #5592

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Make init() run before C++ static initializers #5592

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8 changes: 7 additions & 1 deletion hardware/arduino/avr/cores/arduino/wiring.c
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Original file line number Diff line number Diff line change
Expand Up @@ -238,7 +238,10 @@ void delayMicroseconds(unsigned int us)
// return = 4 cycles
}

void init()
//http://www.atmel.com/webdoc/AVRLibcReferenceManual/mem_sections_1sec_dot_init.html
// init5 is after .data, but before C++ initialization - perfect for hardware setup
void _do_setup(void) __attribute__ ((naked, used, section (".init5")));
void _do_setup()
{
// this needs to be called before setup() or some functions won't
// work there
Expand Down Expand Up @@ -390,3 +393,6 @@ void init()
UCSR0B = 0;
#endif
}

// for backwards compatibility
void init() {}