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Bug #43414 Parenthesis (and other) warnings compiling MySQL

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with gcc 4.3.2
      
This patch fixes a number of GCC warnings about variables used
before initialized. A new macro UNINIT_VAR() is introduced for
use in the variable declaration, and LINT_INIT() usage will be
gradually deprecated. (A workaround is used for g++, pending a
patch for a g++ bug.)
      
GCC warnings for unused results (attribute warn_unused_result)
for a number of system calls (present at least in later
Ubuntus, where the usual void cast trick doesn't work) are
also fixed.


client/mysqlmanager-pwgen.c:
  A fix for warn_unused_result, adding fallback to use of
  srand()/rand() if /dev/random cannot be used. Also actually
  adds calls to rand() in the second branch so that it actually
  creates a random password.
This commit is contained in:
Staale Smedseng
2009-08-28 17:51:31 +02:00
parent 5edd807a7a
commit 1ba25ae47c
51 changed files with 142 additions and 191 deletions
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3
sql/sql_prepare.cc
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@@ -2072,10 +2072,9 @@ void mysql_sql_stmt_prepare(THD *thd)
LEX_STRING *name= &lex->prepared_stmt_name;
Prepared_statement *stmt;
const char *query;
uint query_len;
uint UNINIT_VAR(query_len);
DBUG_ENTER("mysql_sql_stmt_prepare");
DBUG_ASSERT(thd->protocol == &thd->protocol_simple);
LINT_INIT(query_len);
if ((stmt= (Prepared_statement*) thd->stmt_map.find_by_name(name)))
{