diff --git a/src/linker.cpp b/src/linker.cpp
index ee769a6a..0f262a4f 100644
--- a/src/linker.cpp
+++ b/src/linker.cpp
@@ -594,7 +594,9 @@ void ElfLinkerAMD64::relocate1(const Relocation *rel, upx_byte *location, upx_ui
 
 void ElfLinkerArmBE::relocate1(const Relocation *rel, upx_byte *location, upx_uint64_t value,
                                const char *type) {
-    if (strcmp(type, "R_ARM_PC24") == 0) {
+    if (!strcmp(type, "R_ARM_PC24")
+    ||  !strcmp(type, "R_ARM_CALL")
+    ||  !strcmp(type, "R_ARM_JUMP24")) {
         value -= rel->section->offset + rel->offset;
         set_be24(1 + location, get_be24(1 + location) + value / 4);
     } else if (strcmp(type, "R_ARM_ABS32") == 0) {
@@ -618,7 +620,9 @@ void ElfLinkerArmBE::relocate1(const Relocation *rel, upx_byte *location, upx_ui
 
 void ElfLinkerArmLE::relocate1(const Relocation *rel, upx_byte *location, upx_uint64_t value,
                                const char *type) {
-    if (strcmp(type, "R_ARM_PC24") == 0) {
+    if (!strcmp(type, "R_ARM_PC24")
+    ||  !strcmp(type, "R_ARM_CALL")
+    ||  !strcmp(type, "R_ARM_JUMP24")) {
         value -= rel->section->offset + rel->offset;
         set_le24(location, get_le24(location) + value / 4);
     } else if (strcmp(type, "R_ARM_ABS32") == 0) {
diff --git a/src/p_lx_elf.cpp b/src/p_lx_elf.cpp
index 5383f6ec..db6b3ecc 100644
--- a/src/p_lx_elf.cpp
+++ b/src/p_lx_elf.cpp
@@ -3916,7 +3916,7 @@ PackLinuxElf32::check_pt_dynamic(Elf32_Phdr const *const phdr)
 {
     unsigned t = get_te32(&phdr->p_offset), s = sizeof(Elf32_Dyn) + t;
     unsigned filesz = get_te32(&phdr->p_filesz), memsz = get_te32(&phdr->p_memsz);
-    if (s < t || file_size < s
+    if (s < t || file_size < (off_t)s
     ||  (3 & t) || (7 & (filesz | memsz))  // .balign 4; 8==sizeof(Elf32_Dyn)
     ||  filesz < sizeof(Elf32_Dyn)
     ||  memsz  < sizeof(Elf32_Dyn)
@@ -3987,7 +3987,7 @@ PackLinuxElf64::check_pt_dynamic(Elf64_Phdr const *const phdr)
 {
     upx_uint64_t t = get_te64(&phdr->p_offset), s = sizeof(Elf64_Dyn) + t;
     upx_uint64_t filesz = get_te64(&phdr->p_filesz), memsz = get_te64(&phdr->p_memsz);
-    if (s < t || (uint64_t)file_size < s
+    if (s < t || (upx_uint64_t)file_size < s
     ||  (7 & t) || (0xf & (filesz | memsz))  // .balign 8; 16==sizeof(Elf64_Dyn)
     ||  filesz < sizeof(Elf64_Dyn)
     ||  memsz  < sizeof(Elf64_Dyn)
diff --git a/src/p_mach.cpp b/src/p_mach.cpp
index 010fa74d..407240a9 100644
--- a/src/p_mach.cpp
+++ b/src/p_mach.cpp
@@ -1366,7 +1366,6 @@ void PackMachBase<T>::pack1(OutputFile *const fo, Filter &/*ft*/)  // generate e
         unsigned const sz_threado = threado_size();
         MemBuffer space(sz_threado); memset(space, 0, sz_threado);
         fo->write(space, sz_threado);
-        sz_mach_headers = fo->getBytesWritten();
     }
     else if (my_filetype == Mach_header::MH_DYLIB) {
         Mach_command const *ptr = (Mach_command const *)rawmseg;
@@ -1398,13 +1397,10 @@ void PackMachBase<T>::pack1(OutputFile *const fo, Filter &/*ft*/)  // generate e
         }
         memset(&linkitem, 0, sizeof(linkitem));
         fo->write(&linkitem, sizeof(linkitem));
-        fo->write(rawmseg, mhdri.sizeofcmds);
-
-        gap = secTEXT.offset - sz_mach_headers;
     }
     sz_mach_headers = fo->getBytesWritten();
-    MemBuffer filler(gap);
-    memset(filler, 0, gap);
+    gap = secTEXT.offset - sz_mach_headers;
+    MemBuffer filler(gap); filler.clear();
     fo->write(filler, gap);
     sz_mach_headers += gap;
 
@@ -1978,7 +1974,7 @@ bool PackMachBase<T>::canPack()
                 strncpy(fsm.segZERO.segname, "__PAGEZERO", sizeof(fsm.segZERO.segname));
                 fsm.segZERO.vmaddr = 0;
                 fsm.segZERO.vmsize = (4<<16);
-                if (8==sizeof(void *)) fsm.segZERO.vmsize <<= (32 - 18);
+                if __acc_cte(8==sizeof(void *)) fsm.segZERO.vmsize <<= (32 - 18);
                 fsm.segZERO.fileoff = 0;
                 fsm.segZERO.filesize = 0;
                 fsm.segZERO.maxprot = 0;
diff --git a/src/pefile.cpp b/src/pefile.cpp
index a9bb2ab8..3a9e942d 100644
--- a/src/pefile.cpp
+++ b/src/pefile.cpp
@@ -167,7 +167,7 @@ int PeFile::readFileHeader()
                 : (h.p512*512+h.m512 - h.m512 ? 512 : 0);
 
             if ((pe_offset + delta) < delta  // wrap-around
-            ||  (pe_offset + delta) > file_size) {
+            ||  (pe_offset + delta) > (unsigned)file_size) {
                 char buf[64]; snprintf(buf, sizeof(buf),
                     "bad PE delta %#x at offset %#x", delta, pe_offset);
                 throwCantPack(buf);