How to free aligned memory allocation from `std.Io.Dir.readFileAllocOptions`?

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1 
cons buffer: []u8 = std.Io.Dir.readFileAllocOptions(...) // with align 4
gpa.free(buffer);

gives an error

thread 17498 panic: free of [addr: 776193d598a0, len: 1408 (0x580) align: 1] mismatches allocation of [addr: 776193d598a0, len: 1408 (0x580) align: 4]

I know about .rawFree which has an alignment as the second param but I can’t pass the third param which is not returned to me in the first place… (Not to mention this one is marked as usable only for internal implementation of allocator)

2

Change the type of your variable to []align(4) u8, or ommit the type.

You’re just loosing type information due to a safe coercion, but the (debug) allocator doesn’t know that.

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