nicolasWDC opened a new issue, #19108:
URL: https://github.com/apache/nuttx/issues/19108
### Description / Steps to reproduce the issue
## Description
In NuttX 12.13.0, `pthread_cond_t` is defined as `struct pthread_cond_s`
with three fields:
```c
struct pthread_cond_s
{
sem_t sem;
clockid_t clockid;
int wait_count;
};
```
However, `PTHREAD_COND_INITIALIZER` only initializes the first two fields:
```c
#define PTHREAD_COND_INITIALIZER {SEM_INITIALIZER(0), CLOCK_REALTIME }
```
As a result, builds using `-Wmissing-field-initializers` emit a warning when
a condition variable is statically initialized with `PTHREAD_COND_INITIALIZER`.
## Observed warning
```text
warning: missing initializer for member 'pthread_cond_s::wait_count'
[-Wmissing-field-initializers]
```
## Expected behavior
`PTHREAD_COND_INITIALIZER` should fully initialize all fields of `struct
pthread_cond_s`.
## Root cause
`struct pthread_cond_s` contains:
```c
sem_t sem;
clockid_t clockid;
int wait_count;
```
but the macro initializes only:
```c
sem
clockid
```
leaving `wait_count` without an explicit initializer.
## Proposed fix
Update the initializer to include `wait_count = 0`:
```c
#define PTHREAD_COND_INITIALIZER {SEM_INITIALIZER(0), CLOCK_REALTIME, 0}
```
This matches the structure layout and removes the warning.
## Validation
A minimal compile test using:
```c
#include <pthread.h>
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
```
now builds without the `pthread_cond_s::wait_count` missing-initializer
warning.
### On which OS does this issue occur?
[OS: Linux]
### What is the version of your OS?
Ubuntu 22.04
### NuttX Version
12.13.0
### Issue Architecture
[Arch: arm]
### Issue Area
[Area: Posix]
### Host information
_No response_
### Verification
- [x] I have verified before submitting the report.
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