https://llvm.org/bugs/show_bug.cgi?id=22934
Bug ID: 22934
Summary: Unknown identifier in _Generic throws obscure compiler
error message
Product: clang
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Consider the following piece of code:
void banana(void);
int main() {
_Generic(hello, int: banana)();
}
This shouldn't compile, as "hello" is undeclared. Clang 3.4.1 will throw the
following compiler error:
bla.c:3:12: error: use of undeclared identifier 'hello'
_Generic(hello, int: banana)();
^
1 error generated.
Now fast forward to:
clang version 3.7.0 (trunk 232255)
we see that Clang generates the following error:
bla.c:3:31: error: called object type '<dependent type>' is not a function or
function pointer
_Generic(hello, int: banana)();
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
1 error generated.
It is no longer obvious what causes compilation to fail.
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