| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // <system_error> |
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| 10 | |
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| 11 | // class error_category |
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| 12 | |
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| 13 | // const error_category& generic_category(); |
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| 14 | |
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| 15 | #include <system_error> |
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| 16 | #include <cassert> |
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| 17 | #include <string> |
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| 18 | #include <cerrno> |
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| 19 | |
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| 20 | #include "test_macros.h" |
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| 21 | |
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| 22 | // See https://llvm.org/D65667 |
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| 23 | struct StaticInit { |
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| 24 | const std::error_category* ec; |
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| 25 | ~StaticInit() { |
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| 26 | std::string str = ec->name(); |
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| 27 | assert(str == "generic" ) ; |
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| 28 | } |
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| 29 | }; |
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| 30 | static StaticInit foo; |
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| 31 | |
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| 32 | int main(int, char**) |
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| 33 | { |
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| 34 | { |
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| 35 | const std::error_category& e_cat1 = std::generic_category(); |
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| 36 | std::string m1 = e_cat1.name(); |
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| 37 | assert(m1 == "generic" ); |
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| 38 | } |
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| 39 | |
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| 40 | // Test the result of message(int cond) when given a bad error condition |
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| 41 | { |
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| 42 | errno = E2BIG; // something that message will never generate |
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| 43 | const std::error_category& e_cat1 = std::generic_category(); |
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| 44 | const std::string msg = e_cat1.message(-1); |
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| 45 | // Exact message format varies by platform. We can't detect |
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| 46 | // some of these (Musl in particular) using the preprocessor, |
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| 47 | // so accept a few sensible messages. Newlib unfortunately |
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| 48 | // responds with an empty message, which we probably want to |
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| 49 | // treat as a failure code otherwise, but we can detect that |
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| 50 | // with the preprocessor. |
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| 51 | #if defined(_NEWLIB_VERSION) |
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| 52 | const bool is_newlib = true; |
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| 53 | #else |
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| 54 | const bool is_newlib = false; |
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| 55 | #endif |
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| 56 | (void)is_newlib; |
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| 57 | LIBCPP_ASSERT(msg.rfind(s: "Error -1 occurred" , pos: 0) == 0 // AIX |
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| 58 | || msg.rfind(s: "No error information" , pos: 0) == 0 // Musl |
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| 59 | || msg.rfind(s: "Unknown error" , pos: 0) == 0 // Glibc |
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| 60 | || (is_newlib && msg.empty())); |
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| 61 | assert(errno == E2BIG); |
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| 62 | } |
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| 63 | |
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| 64 | { |
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| 65 | foo.ec = &std::generic_category(); |
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| 66 | std::string m2 = foo.ec->name(); |
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| 67 | assert(m2 == "generic" ); |
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| 68 | } |
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| 69 | |
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| 70 | return 0; |
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| 71 | } |
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| 72 | |
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