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| author | Staale Smedseng <staale.smedseng@sun.com> | 2009-08-28 17:51:31 +0200 |
|---|---|---|
| committer | Staale Smedseng <staale.smedseng@sun.com> | 2009-08-28 17:51:31 +0200 |
| commit | 1ba25ae47caace207cda0be2b7994a1a845e6cce (patch) | |
| tree | 4278d9f3353d5c86ca327f6ac2680c001e809843 /sql/item_cmpfunc.cc | |
| parent | 5edd807a7ab72fc16472293fc94a7eb8e762e2b7 (diff) | |
| download | mariadb-git-1ba25ae47caace207cda0be2b7994a1a845e6cce.tar.gz | |
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.
Diffstat (limited to 'sql/item_cmpfunc.cc')
| -rw-r--r-- | sql/item_cmpfunc.cc | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index c940c4ab3c0..8c655cdc369 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -352,8 +352,7 @@ static bool convert_constant_item(THD *thd, Item_field *field_item, /* For comparison purposes allow invalid dates like 2000-01-32 */ ulong orig_sql_mode= thd->variables.sql_mode; enum_check_fields orig_count_cuted_fields= thd->count_cuted_fields; - ulonglong orig_field_val; /* original field value if valid */ - LINT_INIT(orig_field_val); + ulonglong UNINIT_VAR(orig_field_val); /* original field value if valid */ thd->variables.sql_mode= (orig_sql_mode & ~MODE_NO_ZERO_DATE) | MODE_INVALID_DATES; thd->count_cuted_fields= CHECK_FIELD_IGNORE; @@ -2453,19 +2452,13 @@ Item_func_nullif::is_null() Item *Item_func_case::find_item(String *str) { - String *first_expr_str, *tmp; - my_decimal *first_expr_dec, first_expr_dec_val; - longlong first_expr_int; - double first_expr_real; + String *UNINIT_VAR(first_expr_str), *tmp; + my_decimal *UNINIT_VAR(first_expr_dec), first_expr_dec_val; + longlong UNINIT_VAR(first_expr_int); + double UNINIT_VAR(first_expr_real); char buff[MAX_FIELD_WIDTH]; String buff_str(buff,sizeof(buff),default_charset()); - /* These will be initialized later */ - LINT_INIT(first_expr_str); - LINT_INIT(first_expr_int); - LINT_INIT(first_expr_real); - LINT_INIT(first_expr_dec); - if (first_expr_num != -1) { switch (cmp_type) |