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[libc++] Only include <setjmp.h> from the C library if it exists #81887

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Feb 16, 2024
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[libc++] Only include <setjmp.h> from the C library if it exists #81887

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8 changes: 7 additions & 1 deletion libcxx/include/csetjmp
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,13 @@ void longjmp(jmp_buf env, int val);
#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>

#include <setjmp.h>
// <setjmp.h> is not provided by libc++
#if __has_include(<setjmp.h>)
# include <setjmp.h>
# ifdef _LIBCPP_SETJMP_H
# error "If libc++ starts defining <setjmp.h>, the __has_include check should move to libc++'s <setjmp.h>"
# endif
#endif

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
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