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* support: Add signal support to support_capture_subprocess_checkFlorian Weimer2018-11-281-17/+1
| | | | | | | | Signal zero does not terminate a process, so it is safe to use negative values for signal numbers. Adjust libio/tst-vtables-common.c to use this new functionality, instead of determining the termination status for a signal indirectly.
* libio: Add tst-vtables, tst-vtables-interposedFlorian Weimer2018-06-261-0/+513