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The previous code checked for signed overflow on +, -, and * by doing the operation and checking the result, which can invoke undefined behavior. This replaces that code with initial tests on the operands. In addition, a test for the sole integer division overflow case (that is not division by zero) was missing: INT_MIN / -1 It has now been added, along with a test case.
22 lines
986 B
C++
22 lines
986 B
C++
/*=============================================================================
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Boost.Wave: A Standard compliant C++ preprocessor library
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http://www.boost.org/
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Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
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Software License, Version 1.0. (See accompanying file
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LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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The tests included in this file were initially taken from the mcpp V2.5
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preprocessor validation suite and were modified to fit into the Boost.Wave
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unit test requirements.
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The original files of the mcpp preprocessor are distributed under the
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license reproduced at the end of this file.
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=============================================================================*/
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// Tests error reporting: overflow of constant expression in #if directive.
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// 14.10:
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//E t_6_070.cpp(20): error: integer overflow in preprocessor expression: $E(__TESTWAVE_LONG_MIN__) / - 1
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#if __TESTWAVE_LONG_MIN__ / - 1
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#endif
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