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runshell: Unset LD_PRELOAD

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Preloaded libraries from the host system may not get along with the bundled
linker.

This was observed by users in termux:

ERROR: ld.so: object '/data/data/com.termux/files/usr/lib/libtermux-exec.so' from LD_PRELOAD cannot be preloaded (wrong ELF class:
ELFCLASS64): ignored.
Bad system call

But it could also affect more usual systems; the preloaded library might rely
on symbols from the host libc that are not available or have the wrong versions
in the bundled libc. Unsetting LD_PRELOAD entirely seems safest.
This commit is contained in:
Joey Hess 2018-04-25 13:40:48 -04:00
parent 3753c07204
commit dd7ab91f97
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standalone/linux/skel/runshell
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@ -121,6 +121,10 @@ export ORIG_LOCPATH
LOCPATH="$base/locales"
export LOCPATH
# LD_PRELOAD may interact badly with the bundled libc and other libraries,
# which may have a different subarchitecture than the preloaded library.
unset LD_PRELOAD
# Generate locale definition files for the locales in use,
# using the localedef and locale files from the bundle.
# Currently only utf-8 locales are handled.