# xvasprintf

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/xmalloc.c#L122
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-function-xvasprintf/

```c
int xvasprintf(char **ret, const char *fmt, va_list ap)
```

## Parameters

- `ret` (`char **`)
- `fmt` (`const char *`)
- `ap` (`va_list`)

## Called by

- [`args_print_add`](/en/tmux/3.2a/reference/c-function-arguments-c-args_print_add/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/arguments.c#L131)
- [`cfg_add_cause`](/en/tmux/3.2a/reference/c-function-cfg_add_cause/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cfg.c#L219)
- [`cmd_log_argv`](/en/tmux/3.2a/reference/c-function-cmd_log_argv/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd.c#L240)
- [`cmdq_add_format`](/en/tmux/3.2a/reference/c-function-cmdq_add_format/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-queue.c#L262)
- [`cmdq_error`](/en/tmux/3.2a/reference/c-function-cmdq_error/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-queue.c#L843)
- [`cmdq_insert_hook`](/en/tmux/3.2a/reference/c-function-cmdq_insert_hook/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-queue.c#L367)
- [`cmdq_print`](/en/tmux/3.2a/reference/c-function-cmdq_print/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-queue.c#L801)
- [`control_vwrite`](/en/tmux/3.2a/reference/c-function-control-c-control_vwrite/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/control.c#L394)
- [`control_write`](/en/tmux/3.2a/reference/c-function-control_write/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/control.c#L421)
- [`environ_set`](/en/tmux/3.2a/reference/c-function-environ_set/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/environ.c#L119)
- [`format_add`](/en/tmux/3.2a/reference/c-function-format_add/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/format.c#L3147)
- [`format_log1`](/en/tmux/3.2a/reference/c-function-format-c-format_log1/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/format.c#L257)
- [`format_printf`](/en/tmux/3.2a/reference/c-function-format-c-format_printf/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/format.c#L469)
- [`input_reply`](/en/tmux/3.2a/reference/c-function-input-c-input_reply/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/input.c#L1077)
- [`options_set_string`](/en/tmux/3.2a/reference/c-function-options_set_string/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L721)
- [`screen_write_strlen`](/en/tmux/3.2a/reference/c-function-screen_write_strlen/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/screen-write.c#L344)
- [`screen_write_text`](/en/tmux/3.2a/reference/c-function-screen_write_text/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/screen-write.c#L387)
- [`screen_write_vnputs`](/en/tmux/3.2a/reference/c-function-screen_write_vnputs/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/screen-write.c#L498)
- [`server_add_message`](/en/tmux/3.2a/reference/c-function-server_add_message/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/server.c#L521)
- [`status_message_set`](/en/tmux/3.2a/reference/c-function-status_message_set/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/status.c#L438)
- [`xasprintf`](/en/tmux/3.2a/reference/c-function-xasprintf/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/xmalloc.c#L115)

## Calls

- [`fatalx`](/en/tmux/3.2a/reference/c-function-fatalx/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/xmalloc.c#L129)