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avoid warning message of sequence-point
board/ports/touch/gt911/src/gt911.c: warning: operation on '*(config + 8)' may be undefined [-Wsequence-point] config[8] = config[8] ^= (1 << 3); ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
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@ -375,7 +375,7 @@ static rt_err_t gt911_control(struct rt_touch_device *touch, int cmd, void *arg)
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}
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case RT_TOUCH_CTRL_SET_X_TO_Y:
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{
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config[8] = config[8] ^= (1 << 3);
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config[8] ^= (1 << 3);
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break;
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}
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case RT_TOUCH_CTRL_SET_MODE:
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