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Use intrinsics for source location if available (#5449)
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Sometimes the compiler supports the intrinsic even if the C++ runtime
doesnt yet.
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pfultz2 committed Sep 15, 2023
1 parent 50ba506 commit df4457e
Showing 1 changed file with 35 additions and 3 deletions.
38 changes: 35 additions & 3 deletions lib/sourcelocation.h
Original file line number Diff line number Diff line change
Expand Up @@ -19,10 +19,20 @@
#ifndef sourcelocationH
#define sourcelocationH

#ifndef __has_builtin
#define __has_builtin(x) 0 // Compatibility with non-clang compilers.
#endif

#ifndef __has_include
#define __has_include(x) 0 // Compatibility with non-clang compilers.
#endif

#ifdef __CPPCHECK__
#define CPPCHECK_HAS_SOURCE_LOCATION 0
#define CPPCHECK_HAS_SOURCE_LOCATION_TS 0
#elif defined(__has_include)
#define CPPCHECK_HAS_SOURCE_LOCATION_INTRINSICS 0
#else

#if __has_include(<source_location>) && __cplusplus >= 202003L
#define CPPCHECK_HAS_SOURCE_LOCATION 1
#else
Expand All @@ -33,9 +43,16 @@
#else
#define CPPCHECK_HAS_SOURCE_LOCATION_TS 0
#endif

#if __has_builtin(__builtin_FILE)
#define CPPCHECK_HAS_SOURCE_LOCATION_INTRINSICS 1
#if !__has_builtin(__builtin_COLUMN)
#define __builtin_COLUMN() 0
#endif
#else
#define CPPCHECK_HAS_SOURCE_LOCATION 0
#define CPPCHECK_HAS_SOURCE_LOCATION_TS 0
#define CPPCHECK_HAS_SOURCE_LOCATION_INTRINSICS 0
#endif

#endif

#if CPPCHECK_HAS_SOURCE_LOCATION
Expand All @@ -47,9 +64,24 @@ using SourceLocation = std::experimental::source_location;
#else
#include <cstdint>
struct SourceLocation {
#if CPPCHECK_HAS_SOURCE_LOCATION_INTRINSICS
static SourceLocation current(std::uint_least32_t line = __builtin_LINE(),
std::uint_least32_t column = __builtin_COLUMN(),
const char* file_name = __builtin_FILE(),
const char* function_name = __builtin_FUNCTION())
{
SourceLocation result{};
result.m_line = line;
result.m_column = column;
result.m_file_name = file_name;
result.m_function_name = function_name;
return result;
}
#else
static SourceLocation current() {
return SourceLocation();
}
#endif
std::uint_least32_t m_line = 0;
std::uint_least32_t m_column = 0;
const char* m_file_name = "";
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