| # This test can fail with libc with buggy getopt() implementation. |
| # If getopt() wants to parse multi-option args (-abc), |
| # it needs to remember a position within current arg. |
| # |
| # If this position is kept as a POINTER, not an offset, |
| # and if argv[] ADDRESSES (not contents!) change, it blows up. |
| |
| ( |
| |
| echo "*** optstring:'ac' args:-a -b -c -d e" |
| getopts "ac" var -a -b -c -d e; echo "1 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| getopts "ac" var -a -b -c -d e; echo "2 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| getopts "ac" var -a -b -c -d e; echo "3 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| getopts "ac" var -a -b -c -d e; echo "4 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| getopts "ac" var -a -b -c -d e; echo "5 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| |
| # Above: args are (usually) in the same locations in memory. |
| # Below: variable allocations change the location. |
| |
| echo |
| echo "*** optstring:'ac' args:-a -b -c -d e" |
| unset OPTIND |
| OPTARG=QWERTY; getopts "ac" var -a -b -c -d e; echo "1 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| NEWVAR=NEWVAL; getopts "ac" var -a -b -c -d e; echo "2 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| VAR111=NEWVAL; getopts "ac" var -a -b -c -d e; echo "3 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| VAR222=NEWVAL; getopts "ac" var -a -b -c -d e; echo "4 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| VAR333=NEWVAL; getopts "ac" var -a -b -c -d e; echo "5 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| |
| # Slightly different attempts to force reallocations |
| |
| echo |
| echo "*** optstring:'ac' args:-a -b -c -d e" |
| unset OPTIND |
| export OPTARG; getopts "ac" var -a -b -c -d e; echo "1 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| export NEWVAR; getopts "ac" var -a -b -c -d e; echo "2 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| export VAR111; getopts "ac" var -a -b -c -d e; echo "3 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| export VAR222; getopts "ac" var -a -b -c -d e; echo "4 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| export VAR333; getopts "ac" var -a -b -c -d e; echo "5 rc:$? var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'" |
| |
| # All copies of code above should generate identical output |
| |
| ) 2>&1 \ |
| | sed -e 's/ unrecognized option: / invalid option -- /' \ |
| -e 's/ illegal option -- / invalid option -- /' \ |