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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/textprop.c
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@@ -695,7 +695,7 @@ prop_type_set(typval_T *argvars, int add)
semsg(_("E969: Property type %s already defined"), name);
return;
}
prop = alloc_clear(sizeof(proptype_T) + STRLEN(name));
prop = alloc_clear(offsetof(proptype_T, pt_name) + STRLEN(name) + 1);
if (prop == NULL)
return;
STRCPY(prop->pt_name, name);