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fix umm_malloc null ptr.

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(endless reboot) like:
```
Fatal exception (28):
epc1=0x402097e8, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000001, depc=0x00000000
Fatal exception (28):
epc1=0x402097e8, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000001, depc=0x00000000
Fatal exception (28):
epc1=0x402097e8, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000001, depc=0x00000000
```

```
0x402097e8: umm_info at umm_malloc/umm_malloc.c line 1000
```
This commit is contained in:
Markus Sattler 2016-03-08 18:31:14 +01:00
parent d2d1ca2fd2
commit f8f0001e69
1 changed files with 4 additions and 0 deletions
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4
cores/esp8266/umm_malloc/umm_malloc.c
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@ -971,6 +971,10 @@ void ICACHE_FLASH_ATTR *umm_info( void *ptr, int force ) {
unsigned short int blockNo = 0; unsigned short int blockNo = 0;
if (umm_heap == NULL) {
umm_init();
}
/* Protect the critical section... */ /* Protect the critical section... */
UMM_CRITICAL_ENTRY(); UMM_CRITICAL_ENTRY();