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author | kan <kan@FreeBSD.org> | 2007-05-19 01:19:51 +0000 |
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committer | kan <kan@FreeBSD.org> | 2007-05-19 01:19:51 +0000 |
commit | 1f9ea4d0a40cca64d60cf4dab152349da7b9dddf (patch) | |
tree | 0cb530c9c38af219e6dda2994c078b6b2b9ad853 /contrib/gcc/c-convert.c | |
parent | 4895159b2b4f648051c1f139faa7b6dc50c2bfcb (diff) | |
download | FreeBSD-src-1f9ea4d0a40cca64d60cf4dab152349da7b9dddf.zip FreeBSD-src-1f9ea4d0a40cca64d60cf4dab152349da7b9dddf.tar.gz |
GCC 4.2.0 release.
Diffstat (limited to 'contrib/gcc/c-convert.c')
-rw-r--r-- | contrib/gcc/c-convert.c | 49 |
1 files changed, 26 insertions, 23 deletions
diff --git a/contrib/gcc/c-convert.c b/contrib/gcc/c-convert.c index ce095ac..bf306c8 100644 --- a/contrib/gcc/c-convert.c +++ b/contrib/gcc/c-convert.c @@ -1,5 +1,5 @@ /* Language-level data type conversion for GNU C. - Copyright (C) 1987, 1988, 1991, 1998, 2002, 2003 + Copyright (C) 1987, 1988, 1991, 1998, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of GCC. @@ -16,8 +16,8 @@ for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ /* This file contains the functions for converting C expressions @@ -33,7 +33,10 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "flags.h" #include "convert.h" #include "c-common.h" +#include "c-tree.h" +#include "langhooks.h" #include "toplev.h" +#include "target.h" /* Change of width--truncation and extension of integers or reals-- is represented with NOP_EXPR. Proper functioning of many things @@ -67,14 +70,25 @@ convert (tree type, tree expr) { tree e = expr; enum tree_code code = TREE_CODE (type); + const char *invalid_conv_diag; - if (type == TREE_TYPE (expr) - || TREE_CODE (expr) == ERROR_MARK - || code == ERROR_MARK || TREE_CODE (TREE_TYPE (expr)) == ERROR_MARK) + if (type == error_mark_node + || expr == error_mark_node + || TREE_TYPE (expr) == error_mark_node) + return error_mark_node; + + if ((invalid_conv_diag + = targetm.invalid_conversion (TREE_TYPE (expr), type))) + { + error (invalid_conv_diag); + return error_mark_node; + } + + if (type == TREE_TYPE (expr)) return expr; if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (TREE_TYPE (expr))) - return fold (build1 (NOP_EXPR, type, expr)); + return fold_convert (type, expr); if (TREE_CODE (TREE_TYPE (expr)) == ERROR_MARK) return error_mark_node; if (TREE_CODE (TREE_TYPE (expr)) == VOID_TYPE) @@ -83,25 +97,11 @@ convert (tree type, tree expr) return error_mark_node; } if (code == VOID_TYPE) - return build1 (CONVERT_EXPR, type, e); -#if 0 - /* This is incorrect. A truncation can't be stripped this way. - Extensions will be stripped by the use of get_unwidened. */ - if (TREE_CODE (expr) == NOP_EXPR) - return convert (type, TREE_OPERAND (expr, 0)); -#endif + return fold_convert (type, e); if (code == INTEGER_TYPE || code == ENUMERAL_TYPE) return fold (convert_to_integer (type, e)); if (code == BOOLEAN_TYPE) - { - tree t = c_common_truthvalue_conversion (expr); - /* If it returns a NOP_EXPR, we must fold it here to avoid - infinite recursion between fold () and convert (). */ - if (TREE_CODE (t) == NOP_EXPR) - return fold (build1 (NOP_EXPR, type, TREE_OPERAND (t, 0))); - else - return fold (build1 (NOP_EXPR, type, t)); - } + return fold_convert (type, c_objc_common_truthvalue_conversion (expr)); if (code == POINTER_TYPE || code == REFERENCE_TYPE) return fold (convert_to_pointer (type, e)); if (code == REAL_TYPE) @@ -110,6 +110,9 @@ convert (tree type, tree expr) return fold (convert_to_complex (type, e)); if (code == VECTOR_TYPE) return fold (convert_to_vector (type, e)); + if ((code == RECORD_TYPE || code == UNION_TYPE) + && lang_hooks.types_compatible_p (type, TREE_TYPE (expr))) + return e; error ("conversion to non-scalar type requested"); return error_mark_node; |