*: suppress ~60% of "aliased warnings" on gcc-4.4.1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 8 insertions, 4 deletions

diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c
index 982404d14..d5b86ff5c 100644
--- a/archival/libunarchive/get_header_tar.c
+++ b/archival/libunarchive/get_header_tar.c
@@ -14,6 +14,10 @@
 #include "libbb.h"
 #include "unarchive.h"
 
+typedef uint32_t aliased_uint32_t FIX_ALIASING;
+typedef off_t    aliased_off_t    FIX_ALIASING;
+
+
 /*
  * GNU tar uses "base-256 encoding" for very large numbers (>8 billion).
  * Encoding is binary, with highest bit always set as a marker
@@ -68,10 +72,10 @@ static off_t getBase256_len12(const char *str)
  * and fetch it in one go:
  */
         if (sizeof(off_t) == 8) {
-                value = *(off_t*)str;
+                value = *(aliased_off_t*)str;
                 value = SWAP_BE64(value);
         } else if (sizeof(off_t) == 4) {
-                value = *(off_t*)str;
+                value = *(aliased_off_t*)str;
                 value = SWAP_BE32(value);
         } else {
                 value = 0;
@@ -156,7 +160,7 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
 
 #if ENABLE_DESKTOP || ENABLE_FEATURE_TAR_AUTODETECT
         /* to prevent misdetection of bz2 sig */
-        *(uint32_t*)(&tar) = 0;
+        *(aliased_uint32_t*)&tar = 0;
         i = full_read(archive_handle->src_fd, &tar, 512);
         /* If GNU tar sees EOF in above read, it says:
          * "tar: A lone zero block at N", where N = kilobyte
diff --git a/archival/lzop.c b/archival/lzop.c
index a752a9d89..0a15c51aa 100644
--- a/archival/lzop.c
+++ b/archival/lzop.c
@@ -396,7 +396,7 @@ struct globals {
         const uint32_t *lzo_crc32_table;
         chksum_t chksum_in;
         chksum_t chksum_out;
-};
+} FIX_ALIASING;
 #define G (*(struct globals*)&bb_common_bufsiz1)
 #define INIT_G() do { } while (0)
 //#define G (*ptr_to_globals)