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cc: use '-x c*-header' for header files for C and C++ linters. (#4318)

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When linting an header file in C or C++, `-x c-header` or
`-x c++-header` should be used instead of `-x c` or `-x c++`.

Using `-x c` or `-x c++` for headers files can lead to unused variables
and functions marked as static inlined as seen in #4096.

Using `-x c-header` or `-x c++-header` solve these issues.

The list of file extensions that are considered as header files can be
configured with the variables `g:ale_c_cc_header_exts` and
`g:ale_cpp_cc_header_exts`.
This commit is contained in:
Nicolas Pauss
2022-09-25 02:02:43 +02:00
committed by GitHub
parent a56d51ec1c
commit 78942df284
7 changed files with 73 additions and 2 deletions
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5
ale_linters/cpp/cc.vim
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@@ -3,6 +3,7 @@
call ale#Set('cpp_cc_executable', '<auto>')
call ale#Set('cpp_cc_options', '-std=c++14 -Wall')
call ale#Set('cpp_cc_header_exts', ['h', 'hpp'])
function! ale_linters#cpp#cc#GetExecutable(buffer) abort
let l:executable = ale#Var(a:buffer, 'cpp_cc_executable')
@@ -22,6 +23,8 @@ endfunction
function! ale_linters#cpp#cc#GetCommand(buffer, output) abort
let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
let l:ale_flags = ale#Var(a:buffer, 'cpp_cc_options')
let l:header_exts = ale#Var(a:buffer, 'cpp_cc_header_exts')
let l:lang_flag = ale#c#GetLanguageFlag(a:buffer, l:header_exts, 'c++')
if l:cflags =~# '-std='
let l:ale_flags = substitute(
@@ -36,7 +39,7 @@ function! ale_linters#cpp#cc#GetCommand(buffer, output) abort
"
" `-o /dev/null` or `-o null` is needed to catch all errors,
" -fsyntax-only doesn't catch everything.
return '%e -S -x c++'
return '%e -S -x ' . l:lang_flag
\ . ' -o ' . g:ale#util#nul_file
\ . ' -iquote %s:h'
\ . ale#Pad(l:cflags)