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| author | Nick Mathewson <nickm@torproject.org> | 2017-11-17 11:45:47 -0500 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2017-11-17 11:45:47 -0500 |
| commit | c1bdb80aba64ac378784840d231b0db098c05474 (patch) | |
| tree | 0f6743085a02d78aecce2b0b44251a40daf11293 /src/common | |
| parent | fcdec00685608c85161116bdb7408f33094ea3fa (diff) | |
| download | tor-c1bdb80aba64ac378784840d231b0db098c05474.tar.gz tor-c1bdb80aba64ac378784840d231b0db098c05474.zip | |
Add a macro to call a free_ function and clear a variable
Diffstat (limited to 'src/common')
| -rw-r--r-- | src/common/util.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/common/util.h b/src/common/util.h index 6bc853da26..e11265a5df 100644 --- a/src/common/util.h +++ b/src/common/util.h @@ -109,6 +109,14 @@ extern int dmalloc_free(const char *file, const int line, void *pnt, void tor_log_mallinfo(int severity); +/* Helper macro: free a variable of type 'type' using type_free_, and + * set the variable to NULL. */ +#define FREE_AND_NULL(type, var) \ + do { \ + type ## _free_(var); \ + (var) = NULL; \ + } while (0) + /** Macro: yield a pointer to the field at position <b>off</b> within the * structure <b>st</b>. Example: * <pre> |