diff --git a/src/p_lx_elf.cpp b/src/p_lx_elf.cpp
index 1b8daa00..943856ea 100644
--- a/src/p_lx_elf.cpp
+++ b/src/p_lx_elf.cpp
@@ -577,8 +577,8 @@ void PackLinuxElf32::defineSymbols(Filter const *ft)
     upx_uint32_t       lo_va_stub = get_te32(&elfout.phdr[0].p_vaddr);
     upx_uint32_t adrm;
     len += (7&-lsize) + lsize;
-    upx_uint32_t my_page_size = 4096u;
-    upx_uint32_t my_page_mask = -my_page_size;
+    const upx_uint32_t my_page_size = 4096u;
+    const upx_uint32_t my_page_mask = 0u - my_page_size;
     is_big = (lo_va_user < (lo_va_stub + len + 2 * my_page_size));
     if (is_pie || (is_big /*&& ehdri.ET_EXEC==get_te16(&ehdri.e_type)*/)) {
         // .e_entry is set later by PackLinuxElf32::updateLoader
@@ -1192,8 +1192,8 @@ PackLinuxElf64amd::defineSymbols(Filter const *ft)
     unsigned lenm;
     unsigned lenu;
     len += (7&-lsize) + lsize;
-    upx_uint64_t my_page_size = 4096u;
-    upx_uint64_t my_page_mask = -my_page_size;
+    const upx_uint64_t my_page_size = 4096u;
+    const upx_uint64_t my_page_mask = 0u - my_page_size;
     is_big = (lo_va_user < (lo_va_stub + len + 2 * my_page_size));
     if (is_pie || (is_big /*&& ehdri.ET_EXEC==get_te16(&ehdri.e_type)*/)) {
         // .e_entry is set later by PackLinuxElf64::updateLoader
diff --git a/src/p_lx_interp.cpp b/src/p_lx_interp.cpp
index 386e957a..51b0418a 100644
--- a/src/p_lx_interp.cpp
+++ b/src/p_lx_interp.cpp
@@ -82,7 +82,7 @@ void PackLinuxElf32x86interp::pack1(OutputFile *fo, Filter &)
     assert(ehdri.e_phoff == sizeof(Elf32_Ehdr));  // checked by canPack()
     sz_phdrs = ehdri.e_phnum * ehdri.e_phentsize;
 
-    phdri = new Elf32_Phdr[(unsigned)ehdri.e_phnum];
+    phdri = New(Elf32_Phdr, ehdri.e_phnum);
     fi->seek(ehdri.e_phoff, SEEK_SET);
     fi->readx(phdri, sz_phdrs);
 
diff --git a/src/p_mach.cpp b/src/p_mach.cpp
index 78740ebe..488a19a7 100644
--- a/src/p_mach.cpp
+++ b/src/p_mach.cpp
@@ -93,11 +93,13 @@ static const unsigned lc_segment[2] = {
     //Mach_command::LC_SEGMENT_64
 };
 
+#if 0 // NOT USED
 static const unsigned lc_routines[2] = {
     0x11, 0x1a
     //Mach_command::LC_ROUTINES,
     //Mach_command::LC_ROUTINES_64
 };
+#endif
 
 template <class T>
 PackMachBase<T>::PackMachBase(InputFile *f, unsigned cputype, unsigned filetype,
@@ -459,7 +461,7 @@ PackMachBase<T>::buildMachLoader(
   }
     unsigned char const *const uncLoader = fold_hdrlen + fold;
 
-    unsigned char *const cprLoader = new unsigned char[sizeof(h) + h.sz_unc];
+    unsigned char *const cprLoader = New(unsigned char, sizeof(h) + h.sz_unc);
   if (0 < szfold) {
     unsigned sz_cpr = 0;
     int r = upx_compress(uncLoader, h.sz_unc, sizeof(h) + cprLoader, &sz_cpr,
@@ -1509,7 +1511,7 @@ void PackMachBase<T>::unpack(OutputFile *fo)
     if ((sizeof(mhdri) + sz_cmds) > (size_t)fi->st_size()) {
         throwCantUnpack("file header corrupted");
     }
-    rawmseg = (Mach_segment_command *)new char[sz_cmds];
+    rawmseg = (Mach_segment_command *) New(char, sz_cmds);
     fi->readx(rawmseg, mhdri.sizeofcmds);
 
     // FIXME forgot space left for LC_CODE_SIGNATURE;
@@ -1542,7 +1544,7 @@ void PackMachBase<T>::unpack(OutputFile *fo)
 
     // Uncompress Macho headers
     fi->readx(ibuf, ph.c_len);
-    Mach_header *const mhdr = (Mach_header *)new upx_byte[ph.u_len];
+    Mach_header *const mhdr = (Mach_header *) New(upx_byte, ph.u_len);
     decompress(ibuf, (upx_byte *)mhdr, false);
     if (mhdri.magic      != mhdr->magic
     ||  mhdri.cputype    != mhdr->cputype
@@ -1551,13 +1553,13 @@ void PackMachBase<T>::unpack(OutputFile *fo)
         throwCantUnpack("file header corrupted");
     unsigned const ncmds = mhdr->ncmds;
 
-    msegcmd = new Mach_segment_command[ncmds];
+    msegcmd = New(Mach_segment_command, ncmds);
     unsigned char const *ptr = (unsigned char const *)(1+mhdr);
     for (unsigned j= 0; j < ncmds; ++j) {
         memcpy(&msegcmd[j], ptr, umin(sizeof(Mach_segment_command),
             ((Mach_command const *)ptr)->cmdsize));
         ptr += (unsigned) ((Mach_segment_command const *)ptr)->cmdsize;
-        if ((unsigned)(ptr - (unsigned char const *)mhdr) > ph.u_len) {
+        if (ptr_udiff(ptr, mhdr) > ph.u_len) {
             throwCantUnpack("cmdsize");
         }
     }
@@ -1643,7 +1645,7 @@ int PackMachBase<T>::canUnpack()
     if (1024 < headway) {
         infoWarning("Mach_header.sizeofcmds(%d) > 1024", headway);
     }
-    rawmseg = (Mach_segment_command *)new char[(unsigned) mhdri.sizeofcmds];
+    rawmseg = (Mach_segment_command *) New(char, mhdri.sizeofcmds);
     fi->readx(rawmseg, mhdri.sizeofcmds);
 
     Mach_segment_command const *ptrTEXT = 0;
@@ -1680,7 +1682,7 @@ int PackMachBase<T>::canUnpack()
             pos_next = segptr->filesize + segptr->fileoff;
             if ((headway -= ptr->cmdsize) < 0) {
                 infoWarning("Mach_command[%u]{@%lu}.cmdsize = %u", j,
-                    sizeof(mhdri) + mhdri.sizeofcmds - (headway + ptr->cmdsize),
+                    (unsigned long) (sizeof(mhdri) + mhdri.sizeofcmds - (headway + ptr->cmdsize)),
                     (unsigned)ptr->cmdsize);
                 throwCantUnpack("sum(.cmdsize) exceeds .sizeofcmds");
             }
@@ -1837,14 +1839,14 @@ bool PackMachBase<T>::canPack()
     if (16384 < sz_mhcmds) { // somewhat arbitrary, but amd64-darwin.macho-upxmain.c
         throwCantPack("16384 < Mach_header.sizeofcmds");
     }
-    rawmseg = (Mach_segment_command *)new char[sz_mhcmds];
+    rawmseg = (Mach_segment_command *) New(char, sz_mhcmds);
     fi->readx(rawmseg, mhdri.sizeofcmds);
 
     unsigned const ncmds = mhdri.ncmds;
     if (256 < ncmds) { // arbitrary, but guard against garbage
         throwCantPack("256 < Mach_header.ncmds");
     }
-    msegcmd = new Mach_segment_command[ncmds];
+    msegcmd = New(Mach_segment_command, ncmds);
     unsigned char const *ptr = (unsigned char const *)rawmseg;
     for (unsigned j= 0; j < ncmds; ++j) {
         Mach_segment_command const *segptr = (Mach_segment_command const *)ptr;
@@ -1852,7 +1854,7 @@ bool PackMachBase<T>::canPack()
             msegcmd[j] = *segptr;
             if (!strcmp("__DATA", segptr->segname)) {
                 for (Mach_section_command const *secptr = (Mach_section_command const *)(1+ segptr);
-                    ((char const *)secptr - (char const *)segptr) < segptr->cmdsize;
+                    ptr_udiff(secptr, segptr) < segptr->cmdsize;
                     ++secptr
                 ) {
                     if (sizeof(Addr) == secptr->size
diff --git a/src/p_ps1.cpp b/src/p_ps1.cpp
index e8478a23..f40af957 100644
--- a/src/p_ps1.cpp
+++ b/src/p_ps1.cpp
@@ -160,7 +160,7 @@ void PackPs1::putBkupHeader(const unsigned char *src, unsigned char *dst, unsign
 
     if (src && dst)
     {
-        unsigned char *cpr_bh = new unsigned char[sz_cbh];
+        unsigned char *cpr_bh = New(unsigned char, sz_cbh);
 
         memset(cpr_bh, 0, sizeof(bh));
         ps1_exe_chb_t * p = (ps1_exe_chb_t * )cpr_bh;
@@ -189,7 +189,7 @@ bool PackPs1::getBkupHeader(unsigned char *p, unsigned char *dst)
 
     if (src && (src->id == '1' && src->len < SZ_IH_BKUP) && dst)
     {
-        unsigned char *unc_bh = new unsigned char[MemBuffer::getSizeForUncompression(SZ_IH_BKUP)];
+        unsigned char *unc_bh = New(unsigned char, MemBuffer::getSizeForUncompression(SZ_IH_BKUP));
 
         unsigned sz_bh = SZ_IH_BKUP;
         int r = upx_decompress((const unsigned char *)&src->ih_bkup, src->len,
@@ -338,7 +338,7 @@ void PackPs1::buildLoader(const Filter *)
         if (M_IS_LZMA(ph.method) && buildPart2)
         {
             sz_lcpr = MemBuffer::getSizeForCompression(sz_lunc);
-            unsigned char *cprLoader = new unsigned char[sz_lcpr];
+            unsigned char *cprLoader = New(unsigned char, sz_lcpr);
             int r = upx_compress(getLoader(), sz_lunc, cprLoader, &sz_lcpr,
                                  NULL, M_NRV2B_8, 10, NULL, NULL );
             if (r != UPX_E_OK || sz_lcpr >= sz_lunc)