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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/syntax.c
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@@ -4394,7 +4394,7 @@ add_keyword(
name_folded, MAXKEYWLEN + 1);
else
name_ic = name;
kp = alloc(sizeof(keyentry_T) + STRLEN(name_ic));
kp = alloc(offsetof(keyentry_T, keyword) + STRLEN(name_ic) + 1);
if (kp == NULL)
return;
STRCPY(kp->keyword, name_ic);