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Bug#45288: pb2 returns a lot of compilation warnings

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Fix assorted warnings that are generated in optimized builds.
Most of it is silencing variables that are set but unused.

This patch also introduces the MY_ASSERT_UNREACHABLE macro
which helps the compiler to deduce that a certain piece of
code is unreachable.

include/my_compiler.h:
  Use GCC's __builtin_unreachable if available. It allows
  GCC to deduce the unreachability of certain code paths,
  thus avoiding warnings that, for example, accused that a
  variable could be used without being initialized (due to
  unreachable code paths).
This commit is contained in:
Davi Arnaut 2010-10-20 16:21:40 -02:00
commit 3e9c52250a
18 changed files with 53 additions and 45 deletions
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22
client/mysqltest.cc
View file

@ -5258,8 +5258,13 @@ void do_connect(struct st_command *command)
opt_charsets_dir);
#ifdef HAVE_OPENSSL
if (opt_use_ssl || con_ssl)
if (opt_use_ssl)
con_ssl= 1;
#endif
if (con_ssl)
{
#ifdef HAVE_OPENSSL
mysql_ssl_set(&con_slot->mysql, opt_ssl_key, opt_ssl_cert, opt_ssl_ca,
opt_ssl_capath, opt_ssl_cipher);
#if MYSQL_VERSION_ID >= 50000
@ -5268,36 +5273,37 @@ void do_connect(struct st_command *command)
mysql_options(&con_slot->mysql, MYSQL_OPT_SSL_VERIFY_SERVER_CERT,
&opt_ssl_verify_server_cert);
#endif
}
#endif
}
#ifdef __WIN__
if (con_pipe)
{
#ifdef __WIN__
opt_protocol= MYSQL_PROTOCOL_PIPE;
}
#endif
}
if (opt_protocol)
mysql_options(&con_slot->mysql, MYSQL_OPT_PROTOCOL, (char*) &opt_protocol);
#ifdef HAVE_SMEM
if (con_shm)
{
#ifdef HAVE_SMEM
uint protocol= MYSQL_PROTOCOL_MEMORY;
if (!ds_shm.length)
die("Missing shared memory base name");
mysql_options(&con_slot->mysql, MYSQL_SHARED_MEMORY_BASE_NAME, ds_shm.str);
mysql_options(&con_slot->mysql, MYSQL_OPT_PROTOCOL, &protocol);
#endif
}
else if(shared_memory_base_name)
#ifdef HAVE_SMEM
else if (shared_memory_base_name)
{
mysql_options(&con_slot->mysql, MYSQL_SHARED_MEMORY_BASE_NAME,
shared_memory_base_name);
shared_memory_base_name);
}
#endif
/* Use default db name */
if (ds_database.length == 0)
dynstr_set(&ds_database, opt_db);