ADT
aaron-thesis
arm-eh
ast-experimental
cleanup-dtors
deferred_resn
demangler
enum
forall-pointer-decay
jacob/cs343-translation
jenkins-sandbox
new-ast
new-ast-unique-expr
new-env
no_list
persistent-indexer
pthread-emulation
qualifiedEnum
with_gc
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Last change
on this file since fae90d5f was 4d5e57b, checked in by Rob Schluntz <rschlunt@…>, 8 years ago |
|
Prevent implicit conversion of void * to other pointer type for parameter passing
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-
Property mode
set to
100644
|
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File size:
705 bytes
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| Line | |
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| 1 | void foo(int *) {}
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| 2 | void bar(void *) {}
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| 3 | forall(otype T) void baz(T *);
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| 4 | forall(dtype T) void qux(T *);
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| 5 | forall(dtype T | sized(T)) void quux(T *);
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| 6 |
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| 7 | struct A; // incomplete
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| 8 | struct B {}; // complete
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| 9 |
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| 10 | int main() {
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| 11 | int *i;
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| 12 | void *v;
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| 13 |
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| 14 | A * x;
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| 15 | A * y;
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| 16 | B * x;
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| 17 | B * z;
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| 18 |
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| 19 | // okay
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| 20 | *i;
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| 21 | *x; // picks B
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| 22 | *z;
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| 23 | foo(i);
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| 24 | bar(i);
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| 25 | baz(i);
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| 26 | qux(i);
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| 27 | quux(i);
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| 28 |
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| 29 | bar(v);
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| 30 | qux(v);
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| 31 |
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| 32 | // bad
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| 33 | *v;
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| 34 | *y;
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| 35 | foo(v);
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| 36 | baz(v);
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| 37 | quux(v);
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| 38 | }
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| 39 |
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| 40 |
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| 41 | forall(otype T)
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| 42 | void baz(T * x) {
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| 43 | // okay
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| 44 | bar(x);
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| 45 | baz(x);
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| 46 | qux(x);
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| 47 | quux(x);
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| 48 | *x;
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| 49 | }
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| 50 |
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| 51 | forall(dtype T)
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| 52 | void qux(T * y) {
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| 53 | // okay
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| 54 | bar(y);
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| 55 | qux(y);
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| 56 |
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| 57 | // bad
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| 58 | baz(y);
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| 59 | quux(y);
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| 60 | *y;
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| 61 | }
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| 62 |
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| 63 | forall(dtype T | sized(T))
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| 64 | void quux(T * z) {
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| 65 | // okay
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| 66 | bar(z);
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| 67 | qux(z);
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| 68 | quux(z);
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| 69 | *z;
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| 70 |
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| 71 | // bad
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| 72 | baz(z);
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| 73 | }
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