RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 10:38:11 +00:00
Code Issues Activity Actions

LibC+Userland: Prefer snprintf over sprintf

Browse source 
I ignored the sprintf in Userland/cal.cpp because it's too much trouble.
However, this only underlines the need for bounds checking.
This commit is contained in:
Ben Wiederhake 2020-08-16 18:18:07 +02:00 • committed by Andreas Kling
parent 1aad0f8b16
commit 4f77ccbda8
2 changed files with 7 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Userland/seq.cpp
View file

@ -35,7 +35,7 @@ static double get_double(const char* name, const char* d_string, int* number_of_
char* end;
double d = strtod(d_string, &end);
if (d == 0 && end == d_string) {
fprintf(stderr, "%s: invalid double vallue \"%s\"\n", name, d_string);
fprintf(stderr, "%s: invalid double value \"%s\"\n", name, d_string);
exit(1);
}
if (char* dot = strchr(d_string, '.'))
@ -95,7 +95,7 @@ int main(int argc, const char* argv[])
double d = start;
for (int i = 0; i <= n; ++i) {
char buf[40];
sprintf(buf, "%f", d); // FIXME: Serenity's printf() doesn't seem to handle %f correctly: For `seq 1 0.1 2` this always prints "1.0" as `d` goes from 1.0 to 2.0.
snprintf(buf, sizeof(buf), "%f", d);
if (char* dot = strchr(buf, '.')) {
if (number_of_decimals == 0)
*dot = '\0';
@ -105,4 +105,6 @@ int main(int argc, const char* argv[])
printf("%s\n", buf);
d += step;
}
return 0;
}