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https://github.com/Open-Cascade-SAS/OCCT.git
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8949fd25f9
- Switched from `__clang_major__ >= 16` gating to `__has_warning(...)` checks - Added fallback suppression for `-Wcast-function-type` when `-Wcast-function-type-mismatch` is unavailable
40 lines
2.0 KiB
C++
40 lines
2.0 KiB
C++
// Copyright (c) 2019 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _Standard_WarningDisableFunctionCast_HeaderFile
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#define _Standard_WarningDisableFunctionCast_HeaderFile
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//! @file
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//! Include this file to disable GCC warning -Wcast-function-type introduced in GCC 8.1.
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//!
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//! This diagnostic warns when a function pointer is cast to an incompatible function pointer.
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//! Existing APIs loading function pointer from library (like dlsym() or wglGetProcAddress()) have
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//! no possibility to return function of specified type nor to verify that exported symbol actually
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//! matches the expected function signature, so that unsafe function cast is unavoidable.
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//! There is no way to prevent this warning at OCCT level (until safer APIs is introduced), thus
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//! suppressing it is the only feasible way to avoid it. As this warning still can point out broken
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//! places, it should be suppressed only locally, where usage of function cast has been verified.
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#if defined(__clang__) && defined(__has_warning)
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#if __has_warning("-Wcast-function-type-mismatch")
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#pragma clang diagnostic ignored "-Wcast-function-type-mismatch"
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#elif __has_warning("-Wcast-function-type")
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#pragma clang diagnostic ignored "-Wcast-function-type"
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#endif
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#elif defined(__GNUC__) && !defined(__INTEL_COMPILER)
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#if (__GNUC__ > 8) || ((__GNUC__ == 8) && (__GNUC_MINOR__ >= 1))
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#pragma GCC diagnostic ignored "-Wcast-function-type"
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#endif
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#endif
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#endif // _Standard_WarningDisableFunctionCast_HeaderFile
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