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Tue, 30 Jan 2024 04:25:37 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Jonathan Wakely Date: Tue, 30 Jan 2024 12:25:24 +0000 Message-ID: Subject: Re: [attribs.cc] ICE with 4x underscores To: Amol Surati Cc: "gcc@gcc.gnu.org" Content-Type: multipart/alternative; boundary="00000000000012d4ca061028dc12" X-Spam-Status: No, score=-0.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,HTML_MESSAGE,KAM_SHORT,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE,WEIRD_PORT autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: --00000000000012d4ca061028dc12 Content-Type: text/plain; charset="UTF-8" On Tue, 30 Jan 2024, 10:35 Amol Surati via Gcc, wrote: > Hello, > > If a std attribute name is squeezed between 4x underscores, > Which is undefined behaviour, but shouldn't crash. the compiler (both 13.2 [1] and trunk [2]) experiences an ICE. > Bug reports belong in bugzilla, not on the mailing list please. https://gcc.gnu.org/bugs/ for e.g. when using [[____deprecated____]] int a; > > But, [[____depreated____]] int a; (i.e. the char 'c' removed from the > spelling) does not cause ICE. > > Clang does not crash. > > Stack trace with ICE: > > :1:1: internal compiler error: in decl_attributes, at > attribs.cc:751 > 1 | [[____deprecated____]] int a; > | ^ > 0x1b49b1e internal_error(char const*, ...) > ???:0 > 0x6f805c fancy_abort(char const*, int, char const*) > ???:0 > 0x70f62d decl_attributes(tree_node**, tree_node*, int, tree_node*) > ???:0 > 0x728c0e start_decl(c_declarator*, c_declspecs*, bool, tree_node*, > bool, unsigned int*) > ???:0 > 0x7865dd c_parse_file() > ???:0 > 0x7e60b9 c_common_parse_file() > ???:0 > > Thank you, > Amol > > [1] https://godbolt.org/z/6PaMd9n6x > [2] https://godbolt.org/z/fc48q5PTW > --00000000000012d4ca061028dc12--