a8520f6970
In preparation for the inbuilt options parser, this is a minor refactor of optional components including: - Putting certain optional elements in the right header files, according to their function and their dependencies. - Cleaning up some old and mostly-dead code. - Moving some functions into anonymous namespaces to prevent symbol export. Reviewed By: cryptoad, eugenis Differential Revision: https://reviews.llvm.org/D94117
34 lines
1.5 KiB
C++
34 lines
1.5 KiB
C++
//===-- printf.h ------------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef GWP_ASAN_OPTIONAL_PRINTF_H_
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#define GWP_ASAN_OPTIONAL_PRINTF_H_
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namespace gwp_asan {
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// ================================ Requirements ===============================
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// This function is required to be provided by the supporting allocator iff the
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// allocator wants to use any of the optional components.
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// ================================ Description ================================
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// This function shall produce output according to a strict subset of the C
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// standard library's printf() family. This function must support printing the
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// following formats:
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// 1. integers: "%([0-9]*)?(z|ll)?{d,u,x,X}"
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// 2. pointers: "%p"
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// 3. strings: "%[-]([0-9]*)?(\\.\\*)?s"
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// 4. chars: "%c"
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// This function must be implemented in a signal-safe manner, and thus must not
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// malloc().
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// =================================== Notes ===================================
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// This function has a slightly different signature than the C standard
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// library's printf(). Notably, it returns 'void' rather than 'int'.
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typedef void (*Printf_t)(const char *Format, ...);
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} // namespace gwp_asan
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#endif // GWP_ASAN_OPTIONAL_PRINTF_H_
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