PR c/10333

	* c-parse.in (typespec_reserved_nonattr): Reject typeof on
	bit-fields.

testsuite:
	* gcc.dg/bitfld-7.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@74036 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2fc72f9..3174814 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2003-11-29  Joseph S. Myers  <jsm@polyomino.org.uk>
+
+       PR c/10333
+       * c-parse.in (typespec_reserved_nonattr): Reject typeof on
+       bit-fields.
+
 2003-11-29  Richard Sandiford  <rsandifo@redhat.com>
 
        * stmt.c (expand_asm_operands): Check whether force_const_mem

diff --git a/gcc/c-parse.in b/gcc/c-parse.in
index d58b1ef..9a18d34 100644 (file)
--- a/gcc/c-parse.in
+++ b/gcc/c-parse.in
@@ -1375,7 +1375,11 @@ typespec_nonreserved_nonattr:
                 { $$ = get_object_reference ($1); }
 @@end_ifobjc
        | typeof '(' expr ')'
-               { skip_evaluation--; $$ = TREE_TYPE ($3); }
+               { skip_evaluation--;
+                 if (TREE_CODE ($3) == COMPONENT_REF
+                     && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
+                   error ("`typeof' applied to a bit-field");
+                 $$ = TREE_TYPE ($3); }
        | typeof '(' typename ')'
                { skip_evaluation--; $$ = groktypename ($3); }
        ;

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 6ef9814..8a5b62a 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2003-11-29  Joseph S. Myers  <jsm@polyomino.org.uk>
+
+       PR c/10333
+       * gcc.dg/bitfld-7.c: New test.
+
 2003-11-29  Richard Sandiford  <rsandifo@redhat.com>
 
        * gcc.dg/tls/asm-1.C: New test.

diff --git a/gcc/testsuite/gcc.dg/bitfld-7.c b/gcc/testsuite/gcc.dg/bitfld-7.c
new file mode 100644 (file)
index 0000000..70004ff
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/bitfld-7.c
@@ -0,0 +1,8 @@
+/* Test for rejection of typeof on bit-fields.  PR c/10333.  */
+/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+struct { int a:1; } x;
+
+typeof (x.a) z; /* { dg-error "applied to a bit-field" "typeof" } */