[Bug target/78946] New: optimization throws internal compiler error for uint64_t on AVR
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78946 Bug ID: 78946 Summary: optimization throws internal compiler error for uint64_t on AVR Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: tho...@maier-komor.de Target Milestone: --- Created attachment 40427 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40427=edit set of testcase files, compile testcase.cc with -O2 to reproduce ICE The attached code produces for optimization levels -O2 an internal compiler error while it works without an issue for -Os. this is at least with gcc-4.9.2 and 6.3.0 thomas@glaskugel:~/avr/arduino-mini/sensor1$ /opt/local/bin/avr-g++ --version avr-g++ (GCC) 6.3.0 Copyright (C) 2016 Free Software Foundation, Inc. Dies ist freie Software; die Kopierbedingungen stehen in den Quellen. Es gibt KEINE Garantie; auch nicht für MARKTGÄNGIGKEIT oder FÜR SPEZIELLE ZWECKE. thomas@glaskugel:~/avr/arduino-mini/sensor1$ /opt/local/bin/avr-g++ -c -I/usr/lib/avr/include -O2 testcase.cc testcase.cc: In Elementfunktion »size_t Sensor_AD::fromMemory(const void*, size_t)«: testcase.cc:127:1: Fehler: unerkennbarer Befehl: } ^ (insn 58 57 59 6 (parallel [ (set (reg:HI 84) (minus:HI (subreg:HI (subreg:SI (reg:DI 81) 0) 0) (reg:HI 82))) (clobber (scratch:QI)) ]) testcase.cc:74 -1 (nil)) testcase.cc:127:1: interner Compiler-Fehler: in extract_insn, bei recog.c:2287 0xa1abd8 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../gcc-6.3.0/gcc/rtl-error.c:108 0xa1ac09 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) ../../gcc-6.3.0/gcc/rtl-error.c:116 0x9f0c99 extract_insn(rtx_insn*) ../../gcc-6.3.0/gcc/recog.c:2287 0x84eb83 instantiate_virtual_regs_in_insn ../../gcc-6.3.0/gcc/function.c:1582 0x84eb83 instantiate_virtual_regs ../../gcc-6.3.0/gcc/function.c:1950 0x84eb83 execute ../../gcc-6.3.0/gcc/function.c:1999 Bitte senden Sie einen vollständigen Fehlerbericht auf Englisch ein; inclusive vorverarbeitetem Quellcode, wenn es dienlich ist. Please include the complete backtrace with any bug report. Siehe <http://gcc.gnu.org/bugs.html> für nähere Anweisungen. thomas@glaskugel:~/avr/arduino-mini/sensor1$ avr-g++ --version avr-g++ (GCC) 4.9.2 Copyright (C) 2014 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. thomas@glaskugel:~/avr/arduino-mini/sensor1$ avr-g++ -c -O2 testcase.cc testcase.cc: In member function ‘size_t Sensor_AD::fromMemory(const void*, size_t)’: testcase.cc:127:1: error: unrecognizable insn: } ^ (insn 58 57 59 6 (parallel [ (set (reg:HI 85) (minus:HI (subreg:HI (subreg:SI (reg:DI 82) 0) 0) (reg:HI 83))) (clobber (scratch:QI)) ]) testcase.cc:74 -1 (nil)) testcase.cc:127:1: internal compiler error: in extract_insn, at recog.c:2202 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions.
[Bug c++/68295] internal compiler error / segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68295 --- Comment #4 from Thomas Maier-Komor <tho...@maier-komor.de> --- (In reply to Richard Biener from comment #3) > Works for me on x86_64-linux. Yes - it seems to be cygwin specific...
[Bug c++/68295] internal compiler error / segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68295 --- Comment #2 from Thomas Maier-Komor <tho...@maier-komor.de> --- Created attachment 36701 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36701=edit Another preprocessed testcase This testcase has no missing symbols and should compile cleanly.
[Bug c++/68295] internal compiler error / segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68295 --- Comment #1 from Thomas Maier-Komor <tho...@maier-komor.de> --- The bug is reproduceable with gcc 5.2.0 on cygwin.
[Bug c++/68295] New: internal compiler error / segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68295 Bug ID: 68295 Summary: internal compiler error / segmentation fault Product: gcc Version: 4.9.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: tho...@maier-komor.de Target Milestone: --- Created attachment 36688 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36688=edit file to reproduce the segv g++ terminates on SegV and gives following message, when compiling the attached file with following command line: $ g++ -c -O2 -g gccbug.i gccbug.cc:30:2: interner Compiler-Fehler: Segmentation fault cout << endl << "unknown: " << dec << unknown << '/' << total << '=' << (double)unknown/(double)total*100.f << '%' << endl; ^ Bitte senden Sie einen vollständigen Fehlerbericht auf Englisch ein; bearbeiten Sie die Quellen zunächst mit einem Präprozessor, wenn es dienlich ist. Siehe <http://gcc.gnu.org/bugs.html> für nähere Anweisungen. The bug appears on CygWin: $ uname -a CYGWIN_NT-6.1 LMUC569133 2.3.0(0.291/5/3) 2015-11-09 10:24 x86_64 Cygwin
[Bug c++/51480] New: non-const default argument gets rejected
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51480
Bug #: 51480
Summary: non-const default argument gets rejected
Classification: Unclassified
Product: gcc
Version: 4.5.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: tho...@maier-komor.de
non-const default arguments get rejected with following error message:
error: default argument for 'A a' has type 'A'
Here is an example, where function rejected causes an error, while function
accepted is accepted.
struct A
{
};
void accepted(const A a = A())
{
}
void rejected(A a = A())
{
}
[Bug c++/51480] non-const default argument gets rejected
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51480 --- Comment #2 from Thomas Maier-Komor tho...@maier-komor.de 2011-12-09 09:47:06 UTC --- Why is that so? Visual Studio compiler seems to handle that situation without a problem and I think it could come handy in certain situations...
