gcc version 4.1.0 20050313 (experimental) crash at invalid C++ code: test.cc:3: error: invalid use of undefined type 'struct C' test.cc:1: error: forward declaration of 'struct C' test.cc: In constructor 'C::C()': test.cc:3: error: class 'C' does not have any field named 'f' test.cc:3: internal compiler error: Segmentation fault Testcase: --8X---------------------------- class C; C::C() : f() {} --X8----------------------------
Confirmed.
Backtrace: #0 emit_mem_initializers (mem_inits=0x0) at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/cp/init.c: 485 #1 0x080eaf8f in cp_parser_ctor_initializer_opt_and_function_body (parser=0xb7c82c64) at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/cp/parser.c:7665 #2 0x080eb237 in cp_parser_function_definition_after_declarator (parser=0xb7c82c64, inline_p=0 '\0') at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/cp/parser.c:14868 #3 0x080f7645 in cp_parser_init_declarator (parser=0xb7c82c64, decl_specifiers=0xbff8c378, function_definition_allowed_p=1 '\001', member_p=0 '\0', declares_class_or_enum=Variable "declares_class_or_enum" is not available. ) at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/cp/parser.c:14813 #4 0x080f7849 in cp_parser_simple_declaration (parser=0xb7c82c64, function_definition_allowed_p=1 '\001') at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/cp/parser.c:7007
I found time of regression. GCC CVS mainline at 2004-07-12 16:00 GMT compile testcase without problem. GCC CVS mainline at 2004-07-12 16:20 CMT ICE at testcase CVS changes from http://gcc.gnu.org/ml/gcc-cvs/2004-07/ in this time range: 16:16 gcc/gcc/cp name-lookup.c nathan 16:06 gcc/gcc/cp ChangeLog call.c class.c cvt.c decl ... nathan
*** Bug 20536 has been marked as a duplicate of this bug. ***
Notice that the ICE happen only with checking enabled, but seems easy to fix and we can avoid "confused by earlier errors, bailing out" otherwise.
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2005-03/msg01879.html>.
Subject: Bug 20461 CVSROOT: /cvs/gcc Module name: gcc Changes by: paolo@gcc.gnu.org 2005-03-21 11:49:36 Modified files: gcc/cp : ChangeLog init.c semantics.c Log message: 2005-03-21 Paolo Carlini <pcarlini@suse.de> PR c++/20461 PR c++/20536 * init.c (emit_mem_initializers): Don't crash on undefined types. 2005-03-21 Paolo Carlini <pcarlini@suse.de> PR c++/20147 * semantics.c (finish_stmt_expr_expr): Return immediately if error_operand_p (expr). Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4669&r2=1.4670 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/init.c.diff?cvsroot=gcc&r1=1.414&r2=1.415 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/semantics.c.diff?cvsroot=gcc&r1=1.464&r2=1.465
Subject: Bug 20461 CVSROOT: /cvs/gcc Module name: gcc Changes by: paolo@gcc.gnu.org 2005-03-21 11:53:00 Modified files: gcc/testsuite : ChangeLog Added files: gcc/testsuite/g++.dg/parse: crash24.C crash25.C gcc/testsuite/g++.dg/ext: stmtexpr4.C Log message: 2005-03-21 Paolo Carlini <pcarlini@suse.de> PR c++/20461 * g++.dg/parse/crash24.C: New test. PR c++/20536 * g++.dg/parse/crash25.C: New test. 2005-03-21 Paolo Carlini <pcarlini@suse.de> PR c++/20147 * g++.dg/ext/stmtexpr4.C: New test. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5186&r2=1.5187 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/crash24.C.diff?cvsroot=gcc&r1=NONE&r2=1.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/crash25.C.diff?cvsroot=gcc&r1=NONE&r2=1.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/stmtexpr4.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
Hi Paolo, the testcase g++.dg/parse/crash25.C is hosed: // PR c++/20536 // Found by Wolfgang Wieser 03/2005. // { do-do compile } ^^^^^^^ This should be dg-do, right? Could you please fix that?
Oops! Will do momentarily. Thanks.
Subject: Bug 20461 CVSROOT: /cvs/gcc Module name: gcc Branch: gcc-4_0-branch Changes by: paolo@gcc.gnu.org 2005-03-22 09:11:03 Modified files: gcc/cp : ChangeLog init.c parser.c Log message: 2005-03-22 Paolo Carlini <pcarlini@suse.de> PR c++/20461 PR c++/20536 * init.c (emit_mem_initializers): Don't crash on undefined types. 2005-03-22 Paolo Carlini <pcarlini@suse.de> PR c++/20463 * parser.c (cp_parser_diagnose_invalid_type_name): Check TYPE_BINFO (current_class_type) before attempting to emit inform messages. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.4648.2.13&r2=1.4648.2.14 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/init.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.412.2.2&r2=1.412.2.3 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.319.2.1&r2=1.319.2.2
Subject: Bug 20461 CVSROOT: /cvs/gcc Module name: gcc Branch: gcc-4_0-branch Changes by: paolo@gcc.gnu.org 2005-03-22 09:28:26 Modified files: gcc/testsuite : ChangeLog Added files: gcc/testsuite/g++.dg/parse: crash24.C crash25.C gcc/testsuite/g++.dg/template: crash35.C Log message: 2005-03-22 Paolo Carlini <pcarlini@suse.de> PR c++/20461 * g++.dg/parse/crash24.C: New test. PR c++/20536 * g++.dg/parse/crash25.C: New test. 2005-03-22 Paolo Carlini <pcarlini@suse.de> PR c++/20463 * g++.dg/template/crash35.C: New test. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.57&r2=1.5084.2.58 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/crash24.C.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/crash25.C.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.2.2.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/crash35.C.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.4.1
Fixed for 4.0.