When we attempt to create a built-in that involves a library type we
don't have access to (e.g., fprintf, which needs the library type
FILE), fail with a warning and forget about the builtin
entirely. Previously, we would actually provide an error, which breaks
autoconf's super-lame checks for fprintf, longjmp, etc. Fixes PR8316.
llvm-svn: 122744
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index abd6319..32791f9 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -793,13 +793,13 @@
case ASTContext::GE_Missing_stdio:
if (ForRedeclaration)
- Diag(Loc, diag::err_implicit_decl_requires_stdio)
+ Diag(Loc, diag::warn_implicit_decl_requires_stdio)
<< Context.BuiltinInfo.GetName(BID);
return 0;
case ASTContext::GE_Missing_setjmp:
if (ForRedeclaration)
- Diag(Loc, diag::err_implicit_decl_requires_setjmp)
+ Diag(Loc, diag::warn_implicit_decl_requires_setjmp)
<< Context.BuiltinInfo.GetName(BID);
return 0;
}