[llvm-bugs] [Bug 43816] New: fix-it in clang
via llvm-bugs
llvm-bugs at lists.llvm.org
Sat Oct 26 03:57:21 PDT 2019
https://bugs.llvm.org/show_bug.cgi?id=43816
Bug ID: 43816
Summary: fix-it in clang
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: unassignedclangbugs at nondot.org
Reporter: llvm at alex.lanin.de
CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
richard-llvm at metafoo.co.uk
Hello,
clang-tidy can not only be used to improve code, but also to make it work in
the first place.
Taking an example from
https://github.com/llvm-mirror/clang/blob/master/test/SemaTemplate/dependent-template-recover.cpp
template<typename T, typename U, int N>
struct X {
void f(T* t) {
t->f0<U>(); // expected-error{{use 'template' keyword to treat 'f0' as
a dependent template name}}
}
};
Clang-tidy is capable of fixing that error.
However it’s not possible to fix it without running any other checks?!
e.g. this works fine: clang-tidy --checks="*" test.cpp -fix-errors but it
performs all sorts of other changes.
The best approach seems to be to pick some checker that doesn’t find anything
in order to fix only errors ?!
Clang itself emits the same warning and suggestion, but there is no way to
fix-it from there. See https://godbolt.org/z/iXXy4o
According to http://lists.llvm.org/pipermail/cfe-dev/2019-October/063703.html
I'm hereby trying to file the idea here to have either some clang -fix option
or clang-tidy running without mandatory checkers.
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