0e874fc014
With the internal clang extension '__cl_clang_variadic_functions' variadic functions are accepted by the frontend. This is not a fully supported vendor/Khronos extension as it can only be used on targets with variadic prototype support or in metaprogramming to represent functions with generic prototype without calling such functions in the kernel code. Tags: #clang Differential Revision: https://reviews.llvm.org/D94027
63 lines
2.0 KiB
Common Lisp
63 lines
2.0 KiB
Common Lisp
// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -triple spir-unknown-unknown
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// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -triple spir-unknown-unknown -DFUNCPTREXT
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// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -triple spir-unknown-unknown -DVARARG
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#ifdef FUNCPTREXT
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#pragma OPENCL EXTENSION __cl_clang_function_pointers : enable
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#endif
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#ifdef VARARGEXT
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#pragma OPENCL EXTENSION __cl_clang_variadic_functions : enable
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#endif
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// Variadic functions
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void vararg_f(int, ...);
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#ifndef VARARGEXT
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// expected-error@-2 {{invalid prototype, variadic arguments are not allowed in OpenCL}}
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#endif
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void __vararg_f(int, ...);
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typedef void (*vararg_fptr_t)(int, ...);
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#ifndef VARARGEXT
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// expected-error@-2 {{invalid prototype, variadic arguments are not allowed in OpenCL}}
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#endif
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#ifndef FUNCPTREXT
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// expected-error@-5 {{pointers to functions are not allowed}}
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#endif
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int printf(__constant const char *st, ...);
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#ifndef VARARGEXT
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// expected-error@-2 {{invalid prototype, variadic arguments are not allowed in OpenCL}}
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#endif
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// Struct type with function pointer field
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typedef struct s
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{
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void (*f)(struct s *self, int *i);
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#ifndef FUNCPTREXT
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// expected-error@-2 {{pointers to functions are not allowed}}
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#endif
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} s_t;
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//Function pointer
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void foo(void*);
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// Expect no diagnostics for an empty parameter list.
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void bar();
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void bar()
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{
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// declaring a function pointer is an error
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void (*fptr)(int);
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#ifndef FUNCPTREXT
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// expected-error@-2 {{pointers to functions are not allowed}}
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#endif
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// taking the address of a function is an error
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foo((void*)foo); // expected-error{{taking address of function is not allowed}}
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foo(&foo); // expected-error{{taking address of function is not allowed}}
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// initializing an array with the address of functions is an error
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void* vptrarr[2] = {foo, &foo}; // expected-error{{taking address of function is not allowed}} expected-error{{taking address of function is not allowed}}
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// just calling a function is correct
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foo(0);
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}
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