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[libc++abi] Remove redundant #include of <string.h>

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<string.h> is always included, so we don't need the additional #include
only in the _WIN32 case.

llvm-svn: 373365
This commit is contained in:
Louis Dionne 2019-10-01 17:53:17 +00:00
parent 053014f8f9
commit 4ff35a8f0b
1 changed files with 14 additions and 20 deletions
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34
libcxxabi/src/private_typeinfo.cpp
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@ -11,47 +11,41 @@
// The flag _LIBCXX_DYNAMIC_FALLBACK is used to make dynamic_cast more
// forgiving when type_info's mistakenly have hidden visibility and thus
// multiple type_infos can exist for a single type.
//
//
// When _LIBCXX_DYNAMIC_FALLBACK is defined, and only in the case where
// there is a detected inconsistency in the type_info hierarchy during a
// dynamic_cast, then the equality operation will fall back to using strcmp
// on type_info names to determine type_info equality.
//
//
// This change happens *only* under dynamic_cast, and only when
// dynamic_cast is faced with the choice: abort, or possibly give back the
// wrong answer. If when the dynamic_cast is done with this fallback
// algorithm and an inconsistency is still detected, dynamic_cast will call
// abort with an appropriate message.
//
//
// The current implementation of _LIBCXX_DYNAMIC_FALLBACK requires a
// printf-like function called syslog:
//
//
// void syslog(int facility_priority, const char* format, ...);
//
//
// If you want this functionality but your platform doesn't have syslog,
// just implement it in terms of fprintf(stderr, ...).
//
//
// _LIBCXX_DYNAMIC_FALLBACK is currently off by default.
#include <string.h>
#ifdef _LIBCXX_DYNAMIC_FALLBACK
#include "abort_message.h"
#include <sys/syslog.h>
#endif
// On Windows, typeids are different between DLLs and EXEs, so comparing
// type_info* will work for typeids from the same compiled file but fail
// for typeids from a DLL and an executable. Among other things, exceptions
// are not caught by handlers since can_catch() returns false.
//
// Defining _LIBCXX_DYNAMIC_FALLBACK does not help since can_catch() calls
// Defining _LIBCXX_DYNAMIC_FALLBACK does not help since can_catch() calls
// is_equal() with use_strcmp=false so the string names are not compared.
#ifdef _WIN32
#include <string.h>
#ifdef _LIBCXX_DYNAMIC_FALLBACK
#include "abort_message.h"
#include <sys/syslog.h>
#endif
static inline
@ -158,11 +152,11 @@ __pointer_to_member_type_info::~__pointer_to_member_type_info()
// std::nullptr_t.
// adjustedPtr:
//
//
// catch (A& a) : adjustedPtr == &a
// catch (A* a) : adjustedPtr == a
// catch (A** a) : adjustedPtr == a
//
//
// catch (D2& d2) : adjustedPtr == &d2 (d2 is base class of thrown object)
// catch (D2* d2) : adjustedPtr == d2
// catch (D2*& d2) : adjustedPtr == d2
@ -1112,7 +1106,7 @@ __class_type_info::search_below_dst(__dynamic_cast_info* info,
info->dst_ptr_not_leading_to_static_ptr = current_ptr;
info->number_to_dst_ptr += 1;
// If there exists another dst with a private path to
// (static_ptr, static_type), then the cast from
// (static_ptr, static_type), then the cast from
// (dynamic_ptr, dynamic_type) to dst_type is now ambiguous.
if (info->number_to_static_ptr == 1 &&
info->path_dst_ptr_to_static_ptr == not_public_path)