HeapImp.h: static_assert may fail with regard to BlkPrefix and DLink sizes #278
Description
Could someone say if exact sizes of these structs are critical or not?
In file included from ./uppsrc/Core/heaputil.cpp:11:
./uppsrc/Core/HeapImp.h:350:41: error: static assertion failed: Wrong sizeof(BlkPrefix)
350 | static_assert(sizeof(BlkPrefix) == 16, "Wrong sizeof(BlkPrefix)");
| ~~~~~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:350:41: note: the comparison reduces to '(20 == 16)'
./uppsrc/Core/HeapImp.h:351:37: error: static assertion failed: Wrong sizeof(DLink)
351 | static_assert(sizeof(DLink) == 64, "Wrong sizeof(DLink)");
| ~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:351:37: note: the comparison reduces to '(68 == 64)'
make: *** [.cache/upp.out/Core/GCC-Gcc-Gui-Linux-Posix-Shared/heaputil.o] Error 1
In file included from ./uppsrc/Core/hheap.cpp:10:
./uppsrc/Core/HeapImp.h:350:41: error: static assertion failed: Wrong sizeof(BlkPrefix)
350 | static_assert(sizeof(BlkPrefix) == 16, "Wrong sizeof(BlkPrefix)");
| ~~~~~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:350:41: note: the comparison reduces to '(20 == 16)'
./uppsrc/Core/HeapImp.h:351:37: error: static assertion failed: Wrong sizeof(DLink)
351 | static_assert(sizeof(DLink) == 64, "Wrong sizeof(DLink)");
| ~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:351:37: note: the comparison reduces to '(68 == 64)'
In file included from ./uppsrc/Core/sheap.cpp:9:
./uppsrc/Core/HeapImp.h:350:41: error: static assertion failed: Wrong sizeof(BlkPrefix)
350 | static_assert(sizeof(BlkPrefix) == 16, "Wrong sizeof(BlkPrefix)");
| ~~~~~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:350:41: note: the comparison reduces to '(20 == 16)'
./uppsrc/Core/HeapImp.h:351:37: error: static assertion failed: Wrong sizeof(DLink)
351 | static_assert(sizeof(DLink) == 64, "Wrong sizeof(DLink)");
| ~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:351:37: note: the comparison reduces to '(68 == 64)'
make: *** [.cache/upp.out/Core/GCC-Gcc-Gui-Linux-Posix-Shared/hheap.o] Error 1
make: *** [.cache/upp.out/Core/GCC-Gcc-Gui-Linux-Posix-Shared/sheap.o] Error 1
In file included from ./uppsrc/Core/lheap.cpp:11:
./uppsrc/Core/HeapImp.h:350:41: error: static assertion failed: Wrong sizeof(BlkPrefix)
350 | static_assert(sizeof(BlkPrefix) == 16, "Wrong sizeof(BlkPrefix)");
| ~~~~~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:350:41: note: the comparison reduces to '(20 == 16)'
./uppsrc/Core/HeapImp.h:351:37: error: static assertion failed: Wrong sizeof(DLink)
351 | static_assert(sizeof(DLink) == 64, "Wrong sizeof(DLink)");
| ~~~~~~~~~~~~~~^~~~~
./uppsrc/Core/HeapImp.h:351:37: note: the comparison reduces to '(68 == 64)'
make: *** [.cache/upp.out/Core/GCC-Gcc-Gui-Linux-Posix-Shared/lheap.o] Error 1
For the first look it does not seem that anything actually requires them to be exactly 64 and 16. But if it is important, I will try to find a way to fit sizes to what is expected.