From 1ba25ae47caace207cda0be2b7994a1a845e6cce Mon Sep 17 00:00:00 2001 From: Staale Smedseng Date: Fri, 28 Aug 2009 17:51:31 +0200 Subject: Bug #43414 Parenthesis (and other) warnings compiling MySQL 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. --- sql/item_create.cc | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'sql/item_create.cc') diff --git a/sql/item_create.cc b/sql/item_create.cc index c897b7aef79..cbd015f300b 100644 --- a/sql/item_create.cc +++ b/sql/item_create.cc @@ -451,10 +451,9 @@ Item *create_func_cast(Item *a, Cast_target cast_type, const char *c_len, const char *c_dec, CHARSET_INFO *cs) { - Item *res; + Item *UNINIT_VAR(res); ulong len; uint dec; - LINT_INIT(res); switch (cast_type) { case ITEM_CAST_BINARY: res= new Item_func_binary(a); break; @@ -542,6 +541,9 @@ Item *create_func_cast(Item *a, Cast_target cast_type, res= new Item_char_typecast(a, len, cs ? cs : current_thd->variables.collation_connection); break; + + default: + DBUG_ASSERT(0); } return res; } -- cgit v1.2.1