small change to brace expansion to inhibit some error messages; changes to printf builtin for precision and field widths

tests/printf7.sub

@@ -0,0 +1,68 @@
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# tests of integer overflow for field width and precision arguments
+INT_MAX=$(getconf INT_MAX)
+TOOBIG=$(( $INT_MAX * 10 ))
+
+printf '[%*s]\n' "${TOOBIG}"
+printf '[%*s]\n' "${TOOBIG}" X
+
+printf -v VAR '[%*s]' "${TOOBIG}"
+echo VAR="$VAR"
+unset -v VAR
+printf -v VAR '[%*s]' "${TOOBIG}" X
+echo VAR="$VAR"
+unset -v VAR
+
+TOOBIG=9223372036854775825
+
+printf '[%*s]\n' "${TOOBIG}"
+printf '[%*s]\n' "${TOOBIG}" X
+
+printf -v VAR '[%*s]' "${TOOBIG}"
+echo VAR="$VAR"
+unset -v VAR
+printf -v VAR '[%*s]' "${TOOBIG}" X
+echo VAR="$VAR"
+unset -v VAR
+
+TOOBIG=$(( $INT_MAX * 10 ))
+
+printf '[%.*s]\n' "${TOOBIG}"
+printf '[%.*s]\n' "${TOOBIG}" X
+
+printf -v VAR '[%.*s]' "${TOOBIG}"
+echo VAR="$VAR"
+unset -v VAR
+printf -v VAR '[%.*s]' "${TOOBIG}" X
+echo VAR="$VAR"
+unset -v VAR
+
+TOOBIG=9223372036854775825
+
+printf '[%.*s]\n' "${TOOBIG}"
+printf '[%.*s]\n' "${TOOBIG}" X
+
+printf -v VAR '[%.*s]' "${TOOBIG}"
+echo VAR="$VAR"
+unset -v VAR
+printf -v VAR '[%.*s]' "${TOOBIG}" X
+echo VAR="$VAR"
+unset -v VAR
+
+# out of range inline precisions
+
+printf "%.${TOOBIG}s\n" XY
+printf "%.${TOOBIG}Q\n" XY