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.

1 files changed, 1 insertions, 2 deletions

diff --git a/heap/hp_test2.c b/heap/hp_test2.c
index 73cad6c2043..dc4ad316d24 100644
--- a/heap/hp_test2.c
+++ b/heap/hp_test2.c
@@ -61,11 +61,10 @@ int main(int argc, char *argv[])
   HP_INFO *file,*file2;
   HP_KEYDEF keyinfo[MAX_KEYS];
   HA_KEYSEG keyseg[MAX_KEYS*5];
-  HEAP_PTR position;
+  HEAP_PTR UNINIT_VAR(position);
   HP_CREATE_INFO hp_create_info;
   CHARSET_INFO *cs= &my_charset_latin1;
   MY_INIT(argv[0]);		/* init my_sys library & pthreads */
-  LINT_INIT(position);
 
   filename= "test2";
   filename2= "test2_2";