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# Exit with backtrace and error message
#
# Usage: die "Error message"
die() {
# Let us be a little sloppy with errors, because otherwise the final
# invocation of `caller` below will cause the script to exit.
set +e
# Print our error message
printf "\nBuilder called die: %b\n" "$*"
printf "Backtrace:\n"
# Print a backtrace.
local frame=0
while caller $frame; do
((frame++));
done
printf "\n"
exit 1
}
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