http://llvm.org/bugs/show_bug.cgi?id=20178
Bug ID: 20178
Summary: clang-cl doesn't forward declare a struct when it
first sees it in the list of arguments in C mode
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
$ cat test.c
void f(struct foo*);
struct foo { int x; };
void f(struct foo* f) {}
$ cl -c test.c
$ clang-cl -c test.c
test.c(1,15) : warning: declaration of 'struct foo' will not be visible
outside of this function [-Wvisibility]
void f(struct foo*);
^
test.c(3,6) : error: conflicting types for 'f'
void f(struct foo* f) {}
^
test.c(1,6) : note: previous declaration is here
void f(struct foo*);
^
1 warning and 1 error generated.
clang-cl accepts this program in C++ mode.
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