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045fe6a110
Another Red Hat patch. "Prior to this update, the result of a command substitution was lost if a file descriptor used for the substitution was previously explicitly closed. With this update, ksh no longer reuses file descriptors that were closed during the execution of a command substitution. Now, command substitutions work as expected in the described situation." Prior discussion: https://bugzilla.redhat.com/1116072 Original patch: https://src.fedoraproject.org/rpms/ksh/blob/642af4d6/f/ksh-20140929-safefd.patch src/cmd/ksh93/include/io.h, src/cmd/ksh93/sh/io.c: - Add sh_iosafefd() function to get a file descriptor that is not in use or otherwise occupied (including marked as closed). src/cmd/ksh93/sh/subshell.c: sh_subshell(): - Use that function to obtain a safe FD upon restoring state when exiting a command substitution. I don't really know the how and why -- all that I/O magic is still beyond me and the code is uncommented as usual. src/cmd/ksh93/tests/subshell.sh: - Add regression test from the reproducer in the bug, reduced to the minimum necessary. |
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| .. | ||
| args.c | ||
| arith.c | ||
| array.c | ||
| defs.c | ||
| deparse.c | ||
| expand.c | ||
| fault.c | ||
| fcin.c | ||
| init.c | ||
| io.c | ||
| jobs.c | ||
| lex.c | ||
| macro.c | ||
| main.c | ||
| name.c | ||
| nvdisc.c | ||
| nvtree.c | ||
| nvtype.c | ||
| parse.c | ||
| path.c | ||
| pmain.c | ||
| shcomp.c | ||
| streval.c | ||
| string.c | ||
| subshell.c | ||
| suid_exec.c | ||
| tdump.c | ||
| timers.c | ||
| trestore.c | ||
| waitevent.c | ||
| xec.c | ||