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Merge branch 'bugfix/uart_isr_rodata' into 'master'
authorAngus Gratton <angus@espressif.com>
Thu, 24 Nov 2016 04:09:46 +0000 (12:09 +0800)
committerAngus Gratton <angus@espressif.com>
Thu, 24 Nov 2016 04:09:46 +0000 (12:09 +0800)
UART driver: Fix crash in ISR due to "UART" static array moved to flash

Ref: http://esp32.com/viewtopic.php?f=13&t=546&sid=76ff371ae2b259441a2cf355e96d74b9#p2275

This is a really subtle bug, gcc noticed the UART array elements are read-only so
implicitly moved the elements to .rodata as if it was const. However
this array is accessed from the UART ISR, so has to be in IRAM or DRAM.

See merge request !245


Trivial merge
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