https://llvm.org/bugs/show_bug.cgi?id=31020
Bug ID: 31020
Summary: Attributed K&R function definition doesn't merge with
a prototyped declaration
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: eugvelesev...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 17590
--> https://llvm.org/bugs/attachment.cgi?id=17590&action=edit
test
Look at the test:
_Bool K&R parameter is promoted to int but clang considers the K&R function as
prototyped one because of the attribute.
SemaDecl.cpp CreateNewFunctionDecl:
bool HasPrototype =
(D.isFunctionDeclarator() && D.getFunctionTypeInfo().hasPrototype) ||
(!isa<FunctionType>(R.getTypePtr()) && R->isFunctionProtoType());
So isa<FunctionType>(R.getTypePtr()) is false because R.getTypePtr() is
AttributedType.
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