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git://git.code.sf.net/p/cdesktopenv/code
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bd3e2a8001
src/cmd/ksh93/data/variables.c:
- Running 'unset .sh.lineno' creates a memory fault, so fix that
by giving it the NV_NOFREE attribute. This crash was happening
because ${.sh.lineno} is an integer that cannot be freed from
memory with free(3).
src/cmd/ksh93/sh/init.c:
- Tell _nv_unset to ignore NV_RDONLY when $RANDOM and $LINENO are
restored from the subshell scope. This is required to fully
restore the original state of these variables after a virtual
subshell finishes.
src/cmd/ksh93/bltins/typeset.c,
src/cmd/ksh93/sh/subshell.c:
- Disabled some optimizations for two instances of 'sh_assignok' to
fix 'readonly' in virtual subshells and '(unset .sh.level)' in
nested functions. This fixes the following variables when
'(readonly $varname); enum varname=' is run:
$_
${.sh.name}
${.sh.subscript}
${.sh.level}
The optimization in question prevents sh_assignok from saving the
original state of these variables by making the sh_assignok call
a no-op. Ksh needs the original state of a variable for it to be
properly restored after a virtual subshell has run, otherwise ksh
will simply carry over any new flags (being NV_RDONLY in this case)
from the subshell into the main shell.
src/cmd/ksh93/tests/variables.sh:
- Add regression tests from Martijn Dekker for setting special
variables as readonly in virtual subshells and for unsetting
special variables in general.
Fixes #4
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||
|---|---|---|
| .. | ||
| alarm.c | ||
| cd_pwd.c | ||
| cflow.c | ||
| enum.c | ||
| getopts.c | ||
| hist.c | ||
| misc.c | ||
| mkservice.c | ||
| print.c | ||
| read.c | ||
| regress.c | ||
| sleep.c | ||
| test.c | ||
| trap.c | ||
| typeset.c | ||
| ulimit.c | ||
| umask.c | ||
| whence.c | ||