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Remove redundant alloc

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This commit is contained in:
Benjamin Feng 2019-12-04 00:10:37 -06:00
parent 01e73bba8d
commit a6f838aab2
1 changed files with 2 additions and 4 deletions
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6
lib/std/heap.zig
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@ -334,12 +334,10 @@ const WasmPageAllocator = struct {
return error.OutOfMemory;
}
if (old_mem.len == 0) {
return alloc(allocator, new_size, new_align);
if (nPages(new_size) == nPages(old_mem.len)) {
return old_mem.ptr[0..new_size];
} else if (new_size < old_mem.len) {
return shrink(allocator, old_mem, old_align, new_size, new_align);
} else if (nPages(new_size) == nPages(old_mem.len)) {
return old_mem.ptr[0..new_size];
} else {
const new_mem = try alloc(allocator, new_size, new_align);
std.mem.copy(u8, new_mem, old_mem);