A bug or a mis-feature ?

[Mario Stipcevic]

Hi there !

 I foun (the hard way) that atof() and strtod() functions in gcc 2.91.66
and 2.95.2 have an inetersting "feature"  (or a bug) that was not
present in
older compilers (say 2.7.2.3) and is mostprobably NOT TO THE ANSI
standard. 

 In short:

atof("infXXXX") returns a big nuumber instead of zero. This is
disturbing since if I have any string beginning with "inf" I will
get a non-zero return from atof(). The same goes for
strtod("infXXX",'\0').

 Is this a bug ? Will you fix it ? If not, how can I avoid this
unexpected behavuiour ? I tried -ansi option to gcc, it does not help !

Example:
#include <stdio.h>
#include <stdlib.h>

int main()
{
 char line_S[10];
 long g_long;
 float x;

 strcpy(line_S, "infanything"); 
 g_long=atof(line_S); 
 printf("%s %d %f\n", line_S, g_long, atof(line_S));
}

 Cheers,
Mario Stipcevic,
Zagreb