https://bugs.kde.org/show_bug.cgi?id=479661
Bug ID: 479661
Summary: Valgrind leaks file descriptors
Classification: Developer tools
Product: valgrind
Version: 3.22.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: wojciechmale...@protonmail.com
Target Milestone: ---
Created attachment 164819
--> https://bugs.kde.org/attachment.cgi?id=164819&action=edit
Output of valgrind --trace-children=yes -v --track-fds=yes ./test
SUMMARY
When running valgrind with --trace-children=yes --track-fds=yes on program uses
fork and exec, valgrind reports open descriptors, even if the program does not
open anything.
CODE
```test.c
#include <unistd.h>
#include <sys/wait.h>
int main(int argc, char **argv) {
if (!fork()) {
execlp("echo", "echo", NULL);
}
wait(NULL);
return 0;
}
```
STEPS TO REPRODUCE
1. Compile the code above: `gcc test.c -o test`
2. Run ` valgrind --trace-children=yes --track-fds=yes ./test`
OBSERVED RESULT
==86569== Open file descriptor 10:
==86569== <inherited from parent>
==86569==
==86569== Open file descriptor 8:
==86569== <inherited from parent>
EXPECTED RESULT
Those descriptors should not be open.
ADDITIONAL INFORMATION
The full output with -v flag in attachment.
output of uname -a:
Linux pangolingila 6.6.7-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 14 Dec 2023
03:45:42 +0000 x86_64 GNU/Linux
This issue is not present in valgrind 3.19.
I think the bug was introduced in commit
0432ce486d61f84f6fcbeab0d812bb1f61c57561.
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