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patch 8.1.1827: allocating more memory than needed for extended structs

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Problem:    Allocating more memory than needed for extended structs.
Solution:   Use offsetof() instead of sizeof(). (Dominique Pelle,
            closes #4786)
This commit is contained in:
Bram Moolenaar
2019-08-08 20:49:14 +02:00
parent 8c5a278fc5
commit 47ed553fd5
8 changed files with 11 additions and 9 deletions
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2
src/sign.c
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@@ -85,7 +85,7 @@ sign_group_ref(char_u *groupname)
if (HASHITEM_EMPTY(hi))
{
// new group
group = alloc(sizeof(signgroup_T) + STRLEN(groupname));
group = alloc(offsetof(signgroup_T, sg_name) + STRLEN(groupname) + 1);
if (group == NULL)
return NULL;
STRCPY(group->sg_name, groupname);