Package: gcc-4.1
Version: 4.1.1-13
Hello Debian GCC maintainers,
On m68k, gcc-4.1 miscompile the function darg in the file
src/basemath/trans2.c of the pari package version 2.3.0-2 when
using the following options:
gcc-4.1 -c -g -O2 -Wall -fomit-frame-pointer -fno-strict-aliasing -I.
-I../src/headers -D_REENTRANT -fPIC -o trans2.o ../src/basemath/trans2.c
It works fine if we remove the -fomit-frame-pointer flag.
The miscompiled function is as follow:
/* arg(s+it) */
double
darg(double s, double t)
{
double x;
if (!t) return (s>0)? 0.: PI;
if (!s) return (t>0)? PI/2: -PI/2;
x = atan(t/s);
return (s>0)? x
: ((t>0)? x+PI : x-PI);
}
The program segfault when the function returns.
This happen during the test suite or when entering
psi(1) inside the gp calculator.
The preprocessed file is available at
<http://people.debian.org/~ballombe/misc/trans2.i>.
Cheers,
--
Bill. <[EMAIL PROTECTED]>
Imagine a large red swirl here.
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