Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

fix === when encountering null pointer #44749

Merged
merged 7 commits into from
Mar 29, 2022
Merged

fix === when encountering null pointer #44749

Show file tree
Hide file tree
Changes from 5 commits
Commits
Show all changes
7 commits
Select commit Hold shift + click to select a range
e73c363
fix `===` when encountering null pointer
Moelf Mar 25, 2022
b2e704d
Update builtins.c
Moelf Mar 25, 2022
5a77107
Update src/builtins.c
Moelf Mar 25, 2022
bd2efbd
fix test and add tests
Moelf Mar 25, 2022
fa22c34
Update test/core.jl
Moelf Mar 26, 2022
e4b18a7
Update src/builtins.c
Moelf Mar 28, 2022
9067814
add one more test
Moelf Mar 28, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
21 changes: 13 additions & 8 deletions src/builtins.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -94,20 +94,25 @@ static int NOINLINE compare_fields(const jl_value_t *a, const jl_value_t *b, jl_
else {
jl_datatype_t *ft = (jl_datatype_t*)jl_field_type_concrete(dt, f);
if (jl_is_uniontype(ft)) {
uint8_t asel = ((uint8_t*)ao)[jl_field_size(dt, f) - 1];
uint8_t bsel = ((uint8_t*)bo)[jl_field_size(dt, f) - 1];
size_t idx = jl_field_size(dt, f) - 1;
uint8_t asel = ((uint8_t*)ao)[idx];
uint8_t bsel = ((uint8_t*)bo)[idx];
if (asel != bsel)
return 0;
ft = (jl_datatype_t*)jl_nth_union_component((jl_value_t*)ft, asel);
}
else if (ft->layout->first_ptr >= 0) {
// If the field is a inline immutable that can be can be undef
// we need to check to check for undef first since undef struct
// If the field is a inline immutable that can be undef
// we need to check for undef first since undef struct
// may have fields that are different but should still be treated as equal.
jl_value_t *ptra = ((jl_value_t**)ao)[ft->layout->first_ptr];
jl_value_t *ptrb = ((jl_value_t**)bo)[ft->layout->first_ptr];
if (ptra == NULL && ptrb == NULL) {
return 1;
int32_t idx = ft->layout->first_ptr;
jl_value_t *ptra = ((jl_value_t**)ao)[idx];
jl_value_t *ptrb = ((jl_value_t**)bo)[idx];
if ((ptra == NULL) != (ptrb == NULL)) {
return 0;
}
else {
continue;
}
Moelf marked this conversation as resolved.
Show resolved Hide resolved
}
if (!ft->layout->haspadding) {
Expand Down
11 changes: 11 additions & 0 deletions test/core.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,17 @@ let abcd = ABCDconst(1, 2, 3, 4)
@test (1, 2, "not constant", 4) === (abcd.a, abcd.b, abcd.c, abcd.d)
end

# test `===` handling null pointer in struct #44712
struct N44712
a::Some{Any}
b::Int
N44712() = new()
end
let a = Int[0, 1], b = Int[0, 2]
GC.@preserve a b begin
@test unsafe_load(Ptr{N44712}(pointer(a))) !== unsafe_load(Ptr{N44712}(pointer(b)))
end
end

f47(x::Vector{Vector{T}}) where {T} = 0
@test_throws MethodError f47(Vector{Vector}())
Expand Down