| Summary: | scanf corner case (EXAMPLE 3 in 7.19.6.2/20) | ||
|---|---|---|---|
| Product: | glibc | Reporter: | Paolo Carlini <pcarlini> |
| Component: | libc | Assignee: | Ulrich Drepper <drepper.fsp> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | fweimer, glibc-bugs, tydeman.fred |
| Priority: | P2 | Flags: | fweimer:
security-
|
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
This is stupidity on the ISO C committee side which goes against existing practice. Any change can break existing code. *** Bug 23274 has been marked as a duplicate of this bug. *** |
Hi. I think glibc (as many other libc implementations, to be clear), doesn't deal correctly with this corner case: #include <stdio.h> int main() { float f = 0.0; char s[] = "100ergs of energy"; int p = sscanf(s, "%f", &f); printf("%f %d\n", f, p); return 0; } It outputs "100.000000 1", and should be "0.000000 0". See EXAMPLE 3 in 7.19.6.2/20.