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fix bug about DhcpClass instantiation to save 40K by avoiding link with GCC 'new' memory allocation code

This commit is contained in:
Martin Ayotte 2015-08-20 21:39:54 -04:00
parent f3c46b0842
commit c70df495a4
1 changed files with 5 additions and 1 deletions
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6
STM32F4/libraries/arduino_uip/UIPEthernet.cpp
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@ -49,6 +49,9 @@ DhcpClass* UIPEthernetClass::_dhcp(NULL);
unsigned long UIPEthernetClass::periodic_timer;
static DhcpClass s_dhcp; // Placing this instance here is saving 40K to final *.bin (see bug below)
// Because uIP isn't encapsulated within a class we have to use global
// variables, so we can only have one TCP/IP stack per program.
@ -60,7 +63,8 @@ UIPEthernetClass::UIPEthernetClass()
int
UIPEthernetClass::begin(const uint8_t* mac)
{
static DhcpClass s_dhcp;
//static DhcpClass s_dhcp; // <-- this is a bug !
// I leave it there commented for history. It is bring all GCC "new" memory allocation code, making the *.bin almost 40K bigger. I've move it globally.
_dhcp = &s_dhcp;
// Initialise the basic info
init(mac);