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Code Issues Releases Activity

lists: Fix list member iteration with no entries

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CTCaer 2020-03-03 04:24:38 +02:00
parent bc7a7bcfa0
commit f3802ec464
2 changed files with 6 additions and 4 deletions
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5
bootloader/utils/list.h
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@ -33,9 +33,10 @@
#define LIST_FOREACH_SAFE(iter, list) \ #define LIST_FOREACH_SAFE(iter, list) \
for(link_t *iter = (list)->next, *safe = iter->next; iter != (list); iter = safe, safe = iter->next) for(link_t *iter = (list)->next, *safe = iter->next; iter != (list); iter = safe, safe = iter->next)
/*! Iterate over all list members. */ /*! Iterate over all list members and make sure that the list has at least one entry. */
#define LIST_FOREACH_ENTRY(etype, iter, list, mn) \ #define LIST_FOREACH_ENTRY(etype, iter, list, mn) \
for(etype *iter = CONTAINER_OF((list)->next, etype, mn); &iter->mn != (list); iter = CONTAINER_OF(iter->mn.next, etype, mn)) if ((list)->next != (list)) \
for(etype *iter = CONTAINER_OF((list)->next, etype, mn); &iter->mn != (list); iter = CONTAINER_OF(iter->mn.next, etype, mn))
typedef struct _link_t typedef struct _link_t
{ {

5
nyx/nyx_gui/utils/list.h
View file

@ -33,9 +33,10 @@
#define LIST_FOREACH_SAFE(iter, list) \ #define LIST_FOREACH_SAFE(iter, list) \
for(link_t *iter = (list)->next, *safe = iter->next; iter != (list); iter = safe, safe = iter->next) for(link_t *iter = (list)->next, *safe = iter->next; iter != (list); iter = safe, safe = iter->next)
/*! Iterate over all list members. */ /*! Iterate over all list members and make sure that the list has at least one entry. */
#define LIST_FOREACH_ENTRY(etype, iter, list, mn) \ #define LIST_FOREACH_ENTRY(etype, iter, list, mn) \
for(etype *iter = CONTAINER_OF((list)->next, etype, mn); &iter->mn != (list); iter = CONTAINER_OF(iter->mn.next, etype, mn)) if ((list)->next != (list)) \
for(etype *iter = CONTAINER_OF((list)->next, etype, mn); &iter->mn != (list); iter = CONTAINER_OF(iter->mn.next, etype, mn))
typedef struct _link_t typedef struct _link_t
{ {