diff options
| author | Jeffrey A Law <law@cygnus.com> | 1998-10-18 16:34:41 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-10-18 10:34:41 -0600 |
| commit | 6acdd0fd75cae3f5a1af6c60b59a233102703b8d (patch) | |
| tree | e414ee2f7817e53cd035404e67a562a70c276dec /gcc/function.c | |
| parent | 39ee4d93e673f9f1ab52fcc357e8c5bd8a873090 (diff) | |
function.c (uninitialized_vars_warning): Do not warn for a VAR_DECL if it has a nonzero DECL_INITIAL.
* function.c (uninitialized_vars_warning): Do not warn for a VAR_DECL
if it has a nonzero DECL_INITIAL.
From-SVN: r23164
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/function.c b/gcc/function.c index e594e7000f5..148acc0e4fb 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -4907,6 +4907,14 @@ uninitialized_vars_warning (block) && ! AGGREGATE_TYPE_P (TREE_TYPE (decl)) && DECL_RTL (decl) != 0 && GET_CODE (DECL_RTL (decl)) == REG + /* Global optimizations can make it difficult to determine if a + particular variable has been initialized. However, a VAR_DECL + with a nonzero DECL_INITIAL had an initializer, so do not + claim it is potentially uninitialized. + + We do not care about the actual value in DECL_INITIAL, so we do + not worry that it may be a dangling pointer. */ + && DECL_INITIAL (decl) == NULL_TREE && regno_uninitialized (REGNO (DECL_RTL (decl)))) warning_with_decl (decl, "`%s' might be used uninitialized in this function"); |