mirrors/phobos
1
0
Fork 0
mirror of https://github.com/dlang/phobos.git synced 2025-05-06 11:07:39 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge pull request #7530 from Just-Harry/fix-issue-20929

Browse source 
Fix issue 20929 - std.experimental.allocator.expandArray's range-based overload fails to instantiate for char and wchar arrays.
This commit is contained in:
Andrei Alexandrescu 2020-06-19 08:57:42 -04:00 • committed by GitHub
commit a3dd382e66
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 39 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

48
std/experimental/allocator/package.d
View file

@ -2082,12 +2082,12 @@ if (isInputRange!R && !isInfinite!R)
version (StdUnittest)
{
private struct ForcedInputRange
private struct ForcedInputRange(T)
{
int[]* array;
T[]* array;
pure nothrow @safe @nogc:
bool empty() { return !array || (*array).empty; }
ref int front() { return (*array)[0]; }
ref T front() { return (*array)[0]; }
void popFront() { *array = (*array)[1 .. $]; }
}
}
@ -2100,7 +2100,7 @@ version (StdUnittest)
void test(A)(auto ref A alloc)
{
ForcedInputRange r;
ForcedInputRange!int r;
long[] a = alloc.makeArray!long(r);
assert(a.length == 0 && a.ptr is null);
auto arr2 = arr;
@ -2221,13 +2221,13 @@ if (isInputRange!R)
toFill.uninitializedFillDefault;
}
for (; !range.empty; range.popFront, toFill.popFront)
for (; !range.empty; range.popFront, toFill = toFill[1 .. $])
{
assert(!toFill.empty);
assert(toFill.length > 0);
import std.conv : emplace;
emplace!T(&toFill.front, range.front);
emplace!T(&toFill[0], range.front);
}
assert(toFill.empty);
assert(toFill.length == 0);
}
else
{
@ -2267,7 +2267,7 @@ if (isInputRange!R)
@system unittest
{
auto arr = theAllocator.makeArray!int([1, 2, 3]);
ForcedInputRange r;
ForcedInputRange!int r;
int[] b = [ 1, 2, 3, 4 ];
auto temp = b;
r.array = &temp;
@ -2275,6 +2275,36 @@ if (isInputRange!R)
assert(arr == [1, 2, 3, 1, 2, 3, 4]);
}
// Regression test for https://issues.dlang.org/show_bug.cgi?id=20929
@system unittest
{
static void test(Char, Allocator)(auto ref Allocator alloc)
{
auto arr = alloc.makeArray!Char(1, Char('f'));
import std.utf : byUTF;
auto forwardRange = "oo".byUTF!Char();
static assert(isForwardRange!(typeof(forwardRange)));
// Test the forward-range code-path.
assert(alloc.expandArray(arr, forwardRange));
assert(arr == "foo");
immutable(Char)[] temp = "bar";
auto inputRange = ForcedInputRange!(immutable(Char))(&temp);
// Test the input-range code-path.
assert(alloc.expandArray(arr, inputRange));
assert(arr == "foobar");
}
import std.experimental.allocator.gc_allocator : GCAllocator;
test!char(GCAllocator.instance);
test!wchar(GCAllocator.instance);
test!char(theAllocator);
test!wchar(theAllocator);
}
/**
Shrinks an array by `delta` elements.