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|
# simple structures work ------------------------------------------------------
tcc -c -u stderr -Wnounused 2>&1
$x.foo = 5;
$x.bar = 17;
$y = $x.foo+$x.bar;
EOF
$x.foo = 5
$x.bar = 17
$y = 22
# multi-level structures work too (1) -----------------------------------------
tcc -c -u stderr -Wnounused 2>&1
$x.y.z = 10;
$a.b.c.d.e = 20;
$a.a.a = $x.y.z*$a.b.c.d.e;
EOF
$x.y.z = 10
$a.b.c.d.e = 20
$a.a.a = 200
# multi-level structures work too (2) -----------------------------------------
tcc -c -u stderr -Wnounused 2>&1
$a.b.c = 10;
$a.b.x.y = 20;
$a.b.z = $a.b.x.y/$a.b.c;
EOF
$a.b.c = 10
$a.b.x.y = 20
$a.b.z = 2
# structure assignment works --------------------------------------------------
tcc -c -u stderr -Wnounused 2>&1
$x.a = 1;
$x.b = 2;
$y = $x;
EOF
$x.a = 1
$x.b = 2
$y.a = 1
$y.b = 2
# structure assignment works with compound expressions ------------------------
tcc -c -u stderr -Wnounused 2>&1
$y = { $x.a = 1; $x.b = 2; $x; };
EOF
{
$x.a = 1
$x.b = 2
}
$y.a = 1
$y.b = 2
# cannot access entries in undefined variable ---------------------------------
tcc -c 2>&1
$foo = $bar.xyzzy;
EOF
ERROR
<stdin>:1: variable bar is uninitialized near ";"
# cannot access entries in non-structure --------------------------------------
tcc -c 2>&1
$bar = 5;
$foo = $bar.xyzzy;
EOF
ERROR
<stdin>:2: expected structure, not type integer near ";"
# cannot access unknown entry -------------------------------------------------
tcc -c 2>&1
$bar.foo = 5;
$foo = $bar.xyzzy;
EOF
ERROR
<stdin>:2: no entry "xyzzy" in structure near ";"
# cannot forward-reference structure entry ------------------------------------
tcc -c 2>&1
dsmark {
class (<$foo.bar>) if 1;
}
EOF
ERROR
<stdin>:2: cannot forward-declare structure entries near ">"
# cannot assign to entry in forward-declared variable -------------------------
tcc -c 2>&1
dsmark {
class (<$foo>) if 1;
prio {
$foo.fail = class;
}
}
EOF
ERROR
<stdin>:5: cannot access structure entries in forward-declared variable near "}"
# structure entries cross scope boundaries (1) --------------------------------
tcc -c -u stderr -Wnounused 2>&1
$foo.x = 5;
prio {
$foo.y = $foo.x;
}
$bar = $foo.x+$foo.y;
EOF
$foo.x = 5
{ device eth0
{ qdisc eth0:1
$foo.y = 5
}
$bar = 10
}
# structure entries cross scope boundaries (2) --------------------------------
tcc -c -u stderr -Wnounused 2>&1
$foo.x = 5;
$foo.y = 7;
prio {
$foo.y = 10;
}
$bar = $foo.x+$foo.y;
EOF
$foo.x = 5
$foo.y = 7
{ device eth0
{ qdisc eth0:1
$foo.y = 10
}
$bar = 15
}
# unaccessed structure is unused ----------------------------------------------
tcc -c 2>&1
$foo.xy = 10;
EOF
<stdin>:1: warning: unused variable foo
# conversion to structure redefines -------------------------------------------
tcc -c -Wredefine 2>&1
$foo = 5;
$foo.foo = 0;
EOF
<stdin>:1: warning: unused variable foo
<stdin>:2: warning: variable foo redefined
<stdin>:2: warning: unused variable foo
# accessing any entry makes structure "used" ----------------------------------
tcc -c 2>&1
$foo.x = 1;
$foo.y = 2;
$bar = $foo.x;
EOF
<stdin>:3: warning: unused variable bar
# creating new entry does not make structure unused ---------------------------
tcc -c 2>&1
$foo.x = 1;
$foo.y = $foo.x;
EOF
# changing existing entry does not make structure unused ----------------------
tcc -c 2>&1
$foo.x = 1;
$foo.x = $foo.x;
EOF
# expansion of structure assignments ------------------------------------------
tcc -c -u stderr 2>&1
warn "nounused";
$x = { $x.a = "xa"; $x.foo = "xfoo"; $x; };
$y = { $y.bar = "ybar"; $y.b = "yb"; $y; };
$y.b = $x;
$z = $y;
EOF
{
$x.a = "xa"
$x.foo = "xfoo"
}
$x.a = "xa"
$x.foo = "xfoo"
{
$y.bar = "ybar"
$y.b = "yb"
}
$y.bar = "ybar"
$y.b = "yb"
$y.b.a = "xa"
$y.b.foo = "xfoo"
$z.bar = "ybar"
$z.b.a = "xa"
$z.b.foo = "xfoo"
|
