[Bug libc/402] New: clog10 crushes with segmentation fault

[Bug libc/402] New: clog10 crushes with segmentation fault

[fabian at fs-maphy dot uni-hannover dot de]

Hi,

There are some math-routines that do not seem to work.
Here's clog10, which crashes with a segmentation fault.

I checked it with 2xSuSE and 1xGentoo
glibcs: libc-2.2.5, libc-2.3.2, libc-2.3.3
gccs: 3.2, 3.3, 3.4
kernels: 2.4.19, 2.6.7, 2.6.8.1

#include <complex.h>
#include <math.h>
#include <stdio.h>

int main(int argc, char **argv) {
    double complex x, y;
    x = 1 + 1*I;
    printf("%f+%f*i\n", creal(x), cimag(x));
    y = clog10(x);
    printf("%f+%f*i\n", creal(y), cimag(y));
    return 0;
}

$ gcc -lm test1.c -o test1

-- 
           Summary: clog10 crushes with segmentation fault
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P3
         Component: libc
        AssignedTo: gotom at debian dot or dot jp
        ReportedBy: fabian at fs-maphy dot uni-hannover dot de
                CC: glibc-bugs at sources dot redhat dot com
  GCC host triplet: different
GCC target triplet: i686


http://sources.redhat.com/bugzilla/show_bug.cgi?id=402

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[Bug libc/402] clog10 crushes with segmentation fault

[jakub at redhat dot com]

------- Additional Comments From jakub at redhat dot com  2004-09-24 07:39 -------
Please RTFM info libc about Feature Set Macros.
clog10 is not an ISO C99 nor POSIX function, but a GNU extension.
As such it is only enabled with -D_GNU_SOURCE.
If you used at least some warnings (e.g. -Wall), gcc would tell you the
prototype is missing.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


http://sources.redhat.com/bugzilla/show_bug.cgi?id=402

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[Bug libc/402] clog10 crushes with segmentation fault

[jakub at redhat dot com]

------- Additional Comments From jakub at redhat dot com  2004-09-24 07:40 -------
*** Bug 403 has been marked as a duplicate of this bug. ***

-- 


http://sources.redhat.com/bugzilla/show_bug.cgi?id=402

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