https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77394
Bug ID: 77394
Summary: internal compiler error with Intel 3825U, cygwin 64
bit compiler
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jeff at jeffunit dot com
Target Milestone: ---
Created attachment 39502
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39502&action=edit
output of cpuinfo, meminfo and gcc -DM -E
I have isolated the internal compiler error to a small piece of code:
#include <math.h> /* floor */
extern double Round(double d)
{
return floor(d + 0.5);
}
produces:
bug_f3.c: In function 'Round':
bug_f3.c:5:5: internal compiler error: Illegal instruction
return floor(d + 0.5);
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
gcc --version reports:
gcc (GCC) 5.4.0
Copyright (C) 2015 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.
uname -srvmo reports:
CYGWIN_NT-10.0 2.5.2(0.297/5/3) 2016-06-23 14:29 x86_64 Cygwin
The code compiles and runs correctly on other cpu's using the same cygwin 5.4.0
It also compiles and runs on mageia 5 linux with gcc 4.9.2
Included in attachments is the output of
cat /proc/cpuinfo
cat /proc/meminfo
gcc -dM -E
I suspect the internal compiler error is related to the specific processor,
which is found on my newish dell notebook.
