shaba/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd.git synced 2025-01-23 02:04:32 +03:00
Code

GREEDY_REALLOC_APPEND: Make more type safe

Browse Source 
Previously, GREEDY_REALLOC_APPEND would compile perfectly fine and cause
subtle memory corruption if the caller messes up the type they're passing
in (i.e. by forgetting to pass-by-reference when appending a Type* to an
array of Type*). Now this will lead to compilation failure
This commit is contained in:
Adrian Vovk 2024-09-04 13:44:26 -04:00 committed by Yu Watanabe
parent 49fd31df58
commit fafc3c2d5c
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/basic/alloc-util.h
View File

@ -155,7 +155,10 @@ void* greedy_realloc_append(void **p, size_t *n_p, const void *from, size_t n_fr
greedy_realloc0((void**) &(array), (need), sizeof((array)[0]))
#define GREEDY_REALLOC_APPEND(array, n_array, from, n_from) \
greedy_realloc_append((void**) &(array), (size_t*) &(n_array), (from), (n_from), sizeof((array)[0]))
({ \
const typeof(*(array)) *_from_ = (from); \
greedy_realloc_append((void**) &(array), &(n_array), _from_, (n_from), sizeof((array)[0])); \
})
#define alloca0(n) \
({ \