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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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2
sql/sql_help.cc
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@ -686,7 +686,7 @@ bool mysqld_help(THD *thd, const char *mask)
if (count_topics == 0)
{
int key_id;
int UNINIT_VAR(key_id);
if (!(select=
prepare_select_for_name(thd,mask,mlen,tables,tables[3].table,
used_fields[help_keyword_name].field,