include:

[pf3gnuchains/gcc-fork.git] / gcc / fixinc / inclhack.def

diff --git a/gcc/fixinc/inclhack.def b/gcc/fixinc/inclhack.def
index 45a0bb8..2f285f5 100644 (file)
--- a/gcc/fixinc/inclhack.def
+++ b/gcc/fixinc/inclhack.def
@@ -1997,6 +1997,31 @@ fix = {
 
 
 /*
+ *  obstack.h used casts as lvalues.
+ *
+ *  We need to change postincrements of casted pointers (which are
+ *  then dereferenced and assigned into) of the form
+ *
+ *    *((TYPE*)PTRVAR)++ = (VALUE)
+ *
+ *  into expressions like
+ *
+ *    ((*((TYPE*)PTRVAR) = (VALUE)), (PTRVAR += sizeof (TYPE)))
+ *
+ *  which is correct for the cases used in obstack.h since PTRVAR is
+ *  of type char * and the value of the expression is not used.
+ */
+fix = {
+    hackname  = obstack_lvalue_cast;
+    files     = obstack.h;
+    select    = '\*\(\(([^()]*)\*\)(.*)\)\+\+ = \(([^()]*)\)';
+    c_fix     = format;
+    c_fix_arg = "((*((%1*)%2) = (%3)), (%2 += sizeof (%1)))";
+    test_text = "*((void **) (h)->next_free)++ = (aptr)";
+};
+
+
+/*
  *  sys/lc_core.h on some versions of OSF1/4.x pollutes the namespace by
  *  defining regex.h related types.  This causes libg++ build and usage
  *  failures.  Fixing this correctly requires checking and modifying 3 files.