QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Year 2038 issue |
| Ref. No. |
QNX.000004631 |
| Category(ies) |
Year 2000, Utilities |
| Issue |
The maximum value of a 32-bit signed integer is 2^31 (two to the thirty-first power), or roughly 2.1 billion. Since QNX keeps the date as the number of seconds passed since January 1, 1970, doing the math (i.e., 2^31=2,147,483,648), we see this integer will overflow after 68 years. Therefor, the maximum date the integer will store is the year 2038.
How will QNX solve this problem?
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| Solution |
This has not been yet been addressed by QNX Software Systems. The solution MAY be one of two things:
1) Soon everything will be 64-bit.
2) QNX libraries will treat the time_t as an unsigned long -->68*2=136 years.
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