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Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AM7EUR03FT004.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR08MB10241 X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Luis Machado via Gdb Reply-To: Luis Machado Cc: "Zaric, Zoran \(Zare\)" Errors-To: gdb-bounces+public-inbox=simark.ca@sourceware.org Sender: "Gdb" On 10/14/22 19:11, Pedro Alves wrote: > Hi! > > Zoran and I found a potential need for an integer type with precision of 64-bit + 8-bit, in order to > store bit offsets that can span a whole 64-bits address space. Instead of rolling our own, > I guess it makes sense to use libgmp, since, well, we already depend on it. I see that we have: Is uint128_t an option (at least temporarily)? > > /* A class to make it easier to use GMP's mpz_t values within GDB. */ > > struct gdb_mpz > { > > In gdb/gmp-utils.h. However, we need do to arithmetic on the type, and this wrapper > type doesn't implement operator+, operator-, etc, etc. I guess we could add those, > as wrappers around mpz_add, etc. Or use raw mpz_add, etc. directly. However, I just found > out that GMP already has its own C++ interface: > > https://gmplib.org/manual/C_002b_002b-Interface-General > > Before we explore this further, is there an already known reason we shouldn't be using > that interface? > > Pedro Alves