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patch 9.0.1902: Vim9: Coverity complains about dead code

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Problem:  Vim9: Coverity complains about dead code
Solution: Copy only object methods from the super class
          to a subclass when extending a class.  Fix
          Coverity warning.

closes: #13103

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
This commit is contained in:
Yegappan Lakshmanan 2023-09-16 18:05:07 +02:00 committed by Christian Brabandt
parent ad29f6af0a
commit e2deb7e598
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GPG Key ID: F3F92DA383FDDE09
2 changed files with 16 additions and 23 deletions
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2
src/version.c
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@ -699,6 +699,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1902,
/**/
1901,
/**/

37
src/vim9class.c
View File

@ -1049,9 +1049,9 @@ add_default_constructor(
}
/*
* Add the class functions and object methods to the new class "cl".
* When extending a class, add the functions and methods from the parent class
* also.
* Add the class methods and object methods to the new class "cl".
* When extending a class "extends_cl", add the instance methods from the
* parent class also.
*/
static int
add_classfuncs_objmethods(
@ -1095,26 +1095,19 @@ add_classfuncs_objmethods(
else
cl->class_obj_method_count_child = gap->ga_len;
int skipped = 0;
for (int i = 0; i < parent_count; ++i)
if (loop == 2)
{
// Copy functions from the parent. Can't use the same
// function, because "uf_class" is different and compilation
// will have a different result.
// Put them after the functions in the current class, object
// methods may be overruled, then "super.Method()" is used to
// find a method from the parent.
// Skip "new" functions. TODO: not all of them.
if (loop == 1 && STRNCMP(
extends_cl->class_class_functions[i]->uf_name,
"new", 3) == 0)
++skipped;
else
// Copy instance methods from the parent.
for (int i = 0; i < parent_count; ++i)
{
ufunc_T *pf = (loop == 1
? extends_cl->class_class_functions
: extends_cl->class_obj_methods)[i];
(*fup)[gap->ga_len + i - skipped] = copy_function(pf);
// Can't use the same parent function, because "uf_class" is
// different and compilation will have a different result.
// Put them after the functions in the current class, object
// methods may be overruled, then "super.Method()" is used to
// find a method from the parent.
ufunc_T *pf = (extends_cl->class_obj_methods)[i];
(*fup)[gap->ga_len + i] = copy_function(pf);
// If the child class overrides a function from the parent
// the signature must be equal.
@ -1135,8 +1128,6 @@ add_classfuncs_objmethods(
}
}
*fcount -= skipped;
// Set the class pointer on all the functions and object methods.
for (int i = 0; i < *fcount; ++i)
{