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We allow implicit function declarations as an extension in all C dialects. Remove OpenCL special case. 

llvm-svn: 314872
This commit is contained in:
Richard Smith 2017-10-04 01:58:22 +00:00
parent 9bfa970a40
commit 289728d5a6
4 changed files with 6 additions and 10 deletions
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4
clang/include/clang/Basic/DiagnosticSemaKinds.td
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@ -355,7 +355,7 @@ def warn_implicit_function_decl : Warning<
"implicit declaration of function %0">,
InGroup<ImplicitFunctionDeclare>, DefaultIgnore;
def ext_implicit_function_decl : ExtWarn<
"implicit declaration of function %0 is invalid in C99">,
"implicit declaration of function %0 is invalid in %select{C99|OpenCL}1">,
InGroup<ImplicitFunctionDeclare>;
def note_function_suggestion : Note<"did you mean %0?">;
@ -8449,8 +8449,6 @@ def err_opencl_scalar_type_rank_greater_than_vector_type : Error<
"element. (%0 and %1)">;
def err_bad_kernel_param_type : Error<
"%0 cannot be used as the type of a kernel parameter">;
def err_opencl_implicit_function_decl : Error<
"implicit declaration of function %0 is invalid in OpenCL">;
def err_record_with_pointers_kernel_param : Error<
"%select{struct|union}0 kernel parameters may not contain pointers">;
def note_within_field_of_type : Note<

8
clang/lib/Sema/SemaDecl.cpp
View File

@ -12642,17 +12642,15 @@ NamedDecl *Sema::ImplicitlyDefineFunction(SourceLocation Loc,
}
// Extension in C99. Legal in C90, but warn about it.
// OpenCL v2.0 s6.9.u - Implicit function declaration is not supported.
unsigned diag_id;
if (II.getName().startswith("__builtin_"))
diag_id = diag::warn_builtin_unknown;
// OpenCL v2.0 s6.9.u - Implicit function declaration is not supported.
else if (getLangOpts().OpenCL)
diag_id = diag::err_opencl_implicit_function_decl;
else if (getLangOpts().C99)
else if (getLangOpts().C99 || getLangOpts().OpenCL)
diag_id = diag::ext_implicit_function_decl;
else
diag_id = diag::warn_implicit_function_decl;
Diag(Loc, diag_id) << &II;
Diag(Loc, diag_id) << &II << getLangOpts().OpenCL;
// If we found a prior declaration of this function, don't bother building
// another one. We've already pushed that one into scope, so there's nothing

2
clang/test/SemaOpenCL/clang-builtin-version.cl
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@ -1,4 +1,4 @@
// RUN: %clang_cc1 %s -fblocks -verify -pedantic -fsyntax-only -ferror-limit 100
// RUN: %clang_cc1 %s -fblocks -verify -pedantic-errors -fsyntax-only -ferror-limit 100
// Confirm CL2.0 Clang builtins are not available in earlier versions

2
clang/test/SemaOpenCL/to_addr_builtin.cl
View File

@ -10,7 +10,7 @@ void test(void) {
glob = to_global(glob, loc);
#if __OPENCL_C_VERSION__ < CL_VERSION_2_0
// expected-error@-2{{implicit declaration of function 'to_global' is invalid in OpenCL}}
// expected-warning@-2{{implicit declaration of function 'to_global' is invalid in OpenCL}}
// expected-warning@-3{{incompatible integer to pointer conversion assigning to '__global int *' from 'int'}}
#else
// expected-error@-5{{invalid number of arguments to function: 'to_global'}}