Bug 62413 – prototype missing for exp10() even if -std=gnu9x is passed to gcc

• Status: RESOLVED INVALID
• Product: Gentoo Linux

[Description Greg Slocum 2004-08-31 12:29:35 UTC]

There is no prototype for exp10() from libm via <math.h>, even if -std=gnu9x is passed to gcc.

Probably true with released version, but certainly true with ~x86 glibc.

Reproducible: Always
Steps to Reproduce:
1.gcc -Wall -std=gnu9x -lm mathh_and_exp10.c
2.
3.

Actual Results:  
Gives a warning with -Wall.  Otherwise it silently corrupts the stack, gives 
wrong answers, and gathers support for incumbents.


I tried several times to give additional information.  ESC clears this window, 
which is nasty if you are used to vi.  Sheesh!  ;-)

[Comment 1 rob holland (RETIRED) 2004-12-23 07:57:34 UTC]

Please do:

gcc -D_GNU_SOURCE

or:

#define _GNU_SOURCE
#include <math.h>