stdio: memory leak in multibyte printf
Bug #2002006 reported by
Simon Chopin
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
glibc (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Focal |
In Progress
|
Medium
|
Simon Chopin |
Bug Description
[Impact]
There's a memory leak when using printf for multibyte characters.
[Test case]
> test-printf.c cat <<EOF
#include <stdio.h>
int main()
{
int i;
for (i = 0; i < (1 << 16); ++i) printf(
return 0;
}
EOF
gcc -o test-printf test-printf.c
/usr/bin/time -f '%M' ./test-printf > /dev/null
With the fix I get a 1544k footprint, without it 263232k.
[Regression potential]
The stdio subsystem is a fairly complex one and the patch isn't trivial, so we could introduce new bugs, especially in non-ASCII environments.
Changed in glibc (Ubuntu): | |
status: | New → Fix Released |
Changed in glibc (Ubuntu Focal): | |
importance: | Undecided → Medium |
status: | New → In Progress |
assignee: | nobody → Simon Chopin (schopin) |
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