Fixing gcc 4.7 building problems.

a) - gcc-4.7 improved the implicit headers that it includes. with
<4.7, the gthr-default.h file always pulls in unistd.h. with >=4.7,
they avoided that include when possible. so code that isn't including
unistd.h itself but needs it now breaks.

b) - narrowing conversion in initiliazation list now raises an
'ill-formed conversion' warning, which causes error when -Werror is
given.

[THIS PART IS NOW REVERTED IN THE PATCH} c) - included patches from pastebin - http://pastebin.com/raw.php?i=p3UKs7Cg

Note - this may not be fixing all the gcc 4.7 build problems for all
parts, but rather than submitting one big-fix-for-all CL, we'd better
do it incrementally (given that all the modification is reasonable and
minor) so that at least some parts get a successful gcc 4.7 build.

BUG=None
TEST=Built successfully using GCC-4.7 under chromium chroot


Review URL: https://chromiumcodereview.appspot.com/10451068

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@140470 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 2 deletions

diff --git a/crypto/ec_signature_creator_nss.cc b/crypto/ec_signature_creator_nss.cc
index 388870f..a85b1e9 100644
--- a/crypto/ec_signature_creator_nss.cc
+++ b/crypto/ec_signature_creator_nss.cc
@@ -8,6 +8,9 @@
 #include <pk11pub.h>
 #include <secerr.h>
 #include <sechash.h>
+#if defined(OS_POSIX)
+#include <unistd.h>
+#endif
 
 #include "base/logging.h"
 #include "crypto/ec_private_key.h"
@@ -34,12 +37,14 @@ SECStatus SignData(SECItem* result,
       hash_type, &hash_data[0], input->data, input->len);
   if (rv != SECSuccess)
     return rv;
-  SECItem hash = {siBuffer, &hash_data[0], hash_data.size()};
+  SECItem hash = {siBuffer, &hash_data[0],
+                  static_cast<unsigned int>(hash_data.size())};
 
   // Compute signature of hash.
   int signature_len = PK11_SignatureLen(key);
   std::vector<uint8> signature_data(signature_len);
-  SECItem sig = {siBuffer, &signature_data[0], signature_len};
+  SECItem sig = {siBuffer, &signature_data[0],
+                 static_cast<unsigned int>(signature_len)};
   rv = PK11_Sign(key, &sig, &hash);
   if (rv != SECSuccess)
     return rv;