Compiling GCC With a C++ Compiler (g++)

[Gabriel Dos Reis]

Andreas Schwab <schwab@suse.de> writes:

| "Dave Korn" <dk@artimi.com> writes:
| 
| >> -----Original Message-----
| >> From: gcc-owner On Behalf Of Gabriel Dos Reis
| >> Sent: 13 October 2004 04:47
| >
| >> Phil Edwards writes:
| >> 
| >> [...]
| >> 
| >> | particular place.  Since member init-lists aren't available 
| >> for STRING_CST,
| >> | we have to cast away the const in build_string
| >> 
| >> which is undefined behaviour by C rules  (and C++ too).
| >
| >   I'll bet alias analysis just loves it too.  Wouldn't using tricks like
| > this lead to a situation in the future (if and) when there's full IPA in gcc
| > and it can't bootstrap itself reliably any more?
| 
| In C you are always allowed to cast away const and write through the
| resulting lvalue as long as the underlying object is not read-only.

That is not true.  
If you can a strcture with const-qualified field, you can modify any
part, except that field.  (I'm talking of C here).

-- Gaby