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memory.op: Check for valid .ptr and .length 

typeid(T).initializer can return an array, whose .ptr is null but the
length not. Assert that .ptr and .length are consistent.
This commit is contained in:
Eugen Wissner 2017-11-01 00:01:43 +01:00
parent 7a2768340e
commit 09b6655b9a
1 changed files with 33 additions and 13 deletions
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46
source/tanya/memory/op.d
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@ -51,10 +51,12 @@ private enum alignMask = size_t.sizeof - 1;
*
* Precondition: $(D_INLINECODE source.length <= target.length).
*/
void copy(const void[] source, void[] target) pure nothrow @trusted @nogc
void copy(const void[] source, void[] target) @nogc nothrow pure @trusted
in
{
assert(source.length <= target.length);
assert(source.length == 0 || source.ptr !is null);
assert(target.length == 0 || target.ptr !is null);
}
body
{
@ -69,7 +71,7 @@ body
}
///
pure nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
ubyte[9] source = [1, 2, 3, 4, 5, 6, 7, 8, 9];
ubyte[9] target;
@ -77,7 +79,7 @@ pure nothrow @safe @nogc unittest
assert(cmp(source, target) == 0);
}
private pure nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
{
ubyte[0] source, target;
@ -120,6 +122,11 @@ private template filledBytes(ubyte Byte, ubyte I = 0)
* memory = Memory block.
*/
void fill(ubyte c = 0)(void[] memory) @trusted
in
{
assert(memory.length == 0 || memory.ptr !is null);
}
body
{
version (TanyaNative)
{
@ -132,7 +139,7 @@ void fill(ubyte c = 0)(void[] memory) @trusted
}
///
pure nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
ubyte[9] memory = [1, 2, 3, 4, 5, 6, 7, 8, 9];
memory.fill!0();
@ -144,7 +151,7 @@ pure nothrow @safe @nogc unittest
// Stress test. Checks that `fill` can handle unaligned pointers and different
// lengths.
pure nothrow @safe @nogc private unittest
@nogc nothrow pure @safe unittest
{
ubyte[192] memory;
@ -189,10 +196,12 @@ pure nothrow @safe @nogc private unittest
*
* Precondition: $(D_INLINECODE source.length <= target.length).
*/
void copyBackward(const void[] source, void[] target) pure nothrow @trusted @nogc
void copyBackward(const void[] source, void[] target) @nogc nothrow pure @trusted
in
{
assert(source.length <= target.length);
assert(source.length == 0 || source.ptr !is null);
assert(target.length == 0 || target.ptr !is null);
}
body
{
@ -207,7 +216,7 @@ body
}
///
pure nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
ubyte[6] mem = [ 'a', 'a', 'b', 'b', 'c', 'c' ];
ubyte[6] expected = [ 'a', 'a', 'a', 'a', 'b', 'b' ];
@ -216,7 +225,7 @@ pure nothrow @safe @nogc unittest
assert(cmp(expected, mem) == 0);
}
private nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
ubyte[9] r1 = [ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i' ];
ubyte[9] r2;
@ -242,7 +251,13 @@ private nothrow @safe @nogc unittest
* negative integer if $(D_INLINECODE r2 > r1),
* `0` if $(D_INLINECODE r1 == r2).
*/
int cmp(const void[] r1, const void[] r2) pure nothrow @trusted @nogc
int cmp(const void[] r1, const void[] r2) @nogc nothrow pure @trusted
in
{
assert(r1.length == 0 || r1.ptr !is null);
assert(r2.length == 0 || r2.ptr !is null);
}
body
{
version (TanyaNative)
{
@ -259,7 +274,7 @@ int cmp(const void[] r1, const void[] r2) pure nothrow @trusted @nogc
}
///
pure nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
ubyte[4] r1 = [ 'a', 'b', 'c', 'd' ];
ubyte[3] r2 = [ 'c', 'a', 'b' ];
@ -271,7 +286,7 @@ pure nothrow @safe @nogc unittest
assert(cmp(r2, r1) < 0);
}
private pure nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
ubyte[16] r1 = [
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
@ -301,7 +316,12 @@ private pure nothrow @safe @nogc unittest
* couldn't be found, an empty `inout void[]` is returned.
*/
inout(void[]) find(return inout void[] haystack, const ubyte needle)
pure nothrow @trusted @nogc
@nogc nothrow pure @trusted
in
{
assert(haystack.length == 0 || haystack.ptr !is null);
}
body
{
auto length = haystack.length;
const size_t needleWord = size_t.max * needle;
@ -348,7 +368,7 @@ pure nothrow @trusted @nogc
}
///
pure nothrow @safe @nogc unittest
@nogc nothrow pure @safe unittest
{
const ubyte[9] haystack = ['a', 'b', 'c', 'd', 'e', 'f', 'b', 'g', 'h'];