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| author | Richard Guenther <rguenther@suse.de> | 2008-03-24 15:08:52 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2008-03-24 15:08:52 +0000 |
| commit | 1b24a790e0f4443ebbe19977f66378f60b059269 (patch) | |
| tree | a7b12b2f030414354125acf1f0fff3ea55cec094 /gcc/gimplify.c | |
| parent | 52249a2e3f3d67b8a86ad232428005c449b77a3e (diff) | |
| download | gcc-1b24a790e0f4443ebbe19977f66378f60b059269.zip gcc-1b24a790e0f4443ebbe19977f66378f60b059269.tar.gz gcc-1b24a790e0f4443ebbe19977f66378f60b059269.tar.bz2 | |
re PR c/22371 (C front-end produces mis-match types in MODIFY_EXPR)
2008-03-24 Richard Guenther <rguenther@suse.de>
PR c/22371
* gimplify.c (gimplify_modify_expr): For frontend type-correct
pointer assignments change conversions according to middle-end rules.
(gimplify_modify_expr_rhs): Deal with NULL TARGET_EXPR_INITIAL.
* configure.ac: Include type checking in yes.
* configure: Regenerate.
From-SVN: r133479
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index acdfb99..4b084e4 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -3599,7 +3599,8 @@ gimplify_modify_expr_rhs (tree *expr_p, tree *from_p, tree *to_p, tree *pre_p, references somehow. */ tree init = TARGET_EXPR_INITIAL (*from_p); - if (!VOID_TYPE_P (TREE_TYPE (init))) + if (init + && !VOID_TYPE_P (TREE_TYPE (init))) { *from_p = init; ret = GS_OK; @@ -3870,6 +3871,17 @@ gimplify_modify_expr (tree *expr_p, tree *pre_p, tree *post_p, bool want_value) || TREE_CODE (*expr_p) == GIMPLE_MODIFY_STMT || TREE_CODE (*expr_p) == INIT_EXPR); + /* Insert pointer conversions required by the middle-end that are not + required by the frontend. This fixes middle-end type checking for + for example gcc.dg/redecl-6.c. */ + if (POINTER_TYPE_P (TREE_TYPE (*to_p)) + && lang_hooks.types_compatible_p (TREE_TYPE (*to_p), TREE_TYPE (*from_p))) + { + STRIP_USELESS_TYPE_CONVERSION (*from_p); + if (!useless_type_conversion_p (TREE_TYPE (*to_p), TREE_TYPE (*from_p))) + *from_p = fold_convert (TREE_TYPE (*to_p), *from_p); + } + /* See if any simplifications can be done based on what the RHS is. */ ret = gimplify_modify_expr_rhs (expr_p, from_p, to_p, pre_p, post_p, want_value); |