http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52653
Bug #: 52653
Summary: GCC 4.6.* bug on i386 Linux and mingw platforms
Classification: Unclassified
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: borut.ra...@gmail.com
The following code hangs the gcc 4.6.* compiler on i386 Linux and mingw
platforms.
Content of t.c:
----8<----
#define double2ul(val) (((val) < 0) ? (((val) < -2147483647.0) ? 0x80000000UL
: (unsigned long) -((long) -(val))) : (unsigned long) (val))
extern double bar ();
/* This seems to be a GCC 4.6.[012] bug on i386 Linux and mingw platforms
*/
void
foo (void)
{
int x = 100000 >> double2ul (bar ());
}
---->8----
Command:
gcc -c t.c
Compiler hangs on OS version:
$ uname -srvmpo
Linux 2.6.32-5-686 #1 SMP Wed Jan 11 12:29:30 UTC 2012 i686 unknown GNU/Linux
Compiler version:
$ gcc --version
gcc (GCC) 4.6.1
Copyright (C) 2011 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.
It compiles correctly on OS version:
$ uname -srvmpo
Linux 3.0.0-16-generic #29-Ubuntu SMP Tue Feb 14 12:48:51 UTC 2012 x86_64
x86_64 GNU/Linux
Compiler version$ gcc --version
gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
Copyright (C) 2011 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.
Borut
