B19: gcc/libc bug with call to atof() (Win95)

Tue Oct 27 06:20:00 GMT 1998

Dear list,
in my version of gnu-win32 I encounter the following bug with
gcc/libc. 
I have the gnu-win32 version B19 running under Win95 (4.00.950 B).
Within the gnu-win32 distribution I have the gcc version
% gcc -v
Reading specs from C:\CYGNUS\B19\H-I386~1\lib\gcc-lib\i386-cygwin322円.7-B19\specs
gcc driver version 2.7-B19 executing gcc version 2.7-97r2aBeta
The following small program produces the bug:
/* test_atof.c */
#include <stdio.h>
main(int argc, char **argv)
{
 while (--argc)
 {
 printf("\narg %d is %s\n", argc, argv[argc]);
 printf("arg %d : value as float %f\n", argc, atof(argv[argc]));
 printf("arg %d : value as int %d\n", argc, atoi(argv[argc]));
 }
}
/* End of file */
Compile the program by
 % gcc test_atof.c
The program compiles and I don't get any error about the missing line
"#include <stdlib.h>", where atoi() and atof() are declared. (This is
the bug, part1)

Try the program with
 % test_atof 3.3 4.7
The result is
arg 2 is 4.7
arg 2 : value as float 0.000000
arg 2 : value as int 4
arg 1 is 3.3
arg 1 : value as float 0.000000
arg 1 : value as int 3
which is wrong for the float value but right for the int value. (This
is the bug, part2). First when you add the line '#include <stdlib.h>'
to the program and recompile it, you get the desired behaviour.
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