https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101953
Bug ID: 101953
Summary: bug on the default cast operator from double to
unsigned short
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: mlwmohawk at gmail dot com
Target Milestone: ---
markw@snoopy:~$ gcc --version
gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
markw@snoopy:~$ ./badpi
-32000 vs -32000
On Raspberry PI:
pi@raspberrypi:~ $ gcc --version
gcc (Raspbian 8.3.0-6+rpi1) 8.3.0
pi@raspberrypi:~ $ ./badpi
0 vs -32000
This is the code:
#include <stdio.h>
#include <stdint.h>
#include <math.h>
int main(int argc, char **argv)
{
uint32_t foo;
int bar;
double val = -32000;
bar = ceil(val);
foo = ceil(val);
printf("%d vs %d\n", foo, bar);
}
gcc -Wall -o badpi badpi.c -lm
