gcc internal error for reserved symbols

[Martin v. Loewis]

> the code below gives an internal compiler error with g++ 2.95.2. I
> know that g++ reserves a bunch of symbols that start with two
> underscores but a descriptive error message would be an improvement.

Thanks for your bug report. With the patch below, gcc reports

b.cc:3: declaration of `operator(sizeof)' as non-function
b.cc:3: assignment (not initialization) in declaration

which was what it wanted to report all along.

Regards,
Martin

2000-02-14  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

	* lex.c (init_parse): Add SIZEOF_EXPR to opname_tab.

// Build don't link:
void foo ()
{
    int __sz = 0;  // ERROR - reserved name
}

Index: lex.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/cp/lex.c,v
retrieving revision 1.175
diff -u -r1.175 lex.c
--- lex.c	2000/02/07 20:36:33	1.175
+++ lex.c	2000/02/14 09:34:32
@@ -844,6 +844,7 @@
   opname_tab[(int) POSTDECREMENT_EXPR] = "--";
   opname_tab[(int) POSTINCREMENT_EXPR] = "++";
   opname_tab[(int) COMPOUND_EXPR] = ",";
+  opname_tab[(int) SIZEOF_EXPR] = "(sizeof)";
 
   assignop_tab[(int) NOP_EXPR] = "=";
   assignop_tab[(int) PLUS_EXPR] =  "+=";