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cfg.mk: variable initialization when declared with cleanup macro

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A variable, which is never assigned a value in the function, might get
passed into the cleanup function which may or may not raise any errors.

To maintain the correct usage, the variable must be initialized, either
with a value or with NULL. This syntax-check rule takes care of that.

Signed-off-by: Sukrit Bhatnagar <skrtbhtngr@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Sukrit Bhatnagar 2018-07-13 23:24:40 +05:30 committed by Erik Skultety
parent dcec13f5a2
commit e36bb5c572
1 changed files with 11 additions and 0 deletions
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11
cfg.mk
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@ -1057,6 +1057,17 @@ sc_prohibit_backslash_alignment:
halt='Do not attempt to right-align backslashes' \
$(_sc_search_regexp)
# Some syntax rules pertaining to the usage of cleanup macros
# implementing GNU C's cleanup attribute
# Rule to ensure that varibales declared using a cleanup macro are
# always initialized.
sc_require_attribute_cleanup_initialization:
@prohibit='VIR_AUTO(FREE|PTR)\(.+\) *[^=]+;' \
in_vc_files='\.[chx]$$' \
halt='variable declared with a cleanup macro must be initialized' \
$(_sc_search_regexp)
# We don't use this feature of maint.mk.
prev_version_file = /dev/null