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Avoid #including system headers from inside a namespace.

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port.h #includes various headers in order to define byteswap functions, but it
currently does so from inside the google::protobuf namespace.  This can cause
bizarre symbol conflicts and other build errors as these headers' contents are
then included inside this namespace.

Instead, #include the relevant headers above the namespace declarations.
This commit is contained in:
Peter Kasting 2015-08-27 14:16:10 -07:00
parent c7a1f8ec3b
commit 2e789bc246
1 changed files with 10 additions and 6 deletions
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16
src/google/protobuf/stubs/port.h
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@ -79,6 +79,15 @@
#define LIBPROTOC_EXPORT
#endif
// These #includes are for the byte swap functions declared later on.
#ifdef _MSC_VER
#include <stdlib.h> // NOLINT(build/include)
#elif defined(__APPLE__)
#include <libkern/OSByteOrder.h>
#elif defined(__GLIBC__) || defined(__CYGWIN__)
#include <byteswap.h> // IWYU pragma: export
#endif
// ===================================================================
// from google3/base/port.h
namespace google {
@ -275,7 +284,6 @@ inline void GOOGLE_UNALIGNED_STORE64(void *p, uint64 v) {
// The following guarantees declaration of the byte swap functions, and
// defines __BYTE_ORDER for MSVC
#ifdef _MSC_VER
#include <stdlib.h> // NOLINT(build/include)
#define __BYTE_ORDER __LITTLE_ENDIAN
#define bswap_16(x) _byteswap_ushort(x)
#define bswap_32(x) _byteswap_ulong(x)
@ -283,15 +291,11 @@ inline void GOOGLE_UNALIGNED_STORE64(void *p, uint64 v) {
#elif defined(__APPLE__)
// Mac OS X / Darwin features
#include <libkern/OSByteOrder.h>
#define bswap_16(x) OSSwapInt16(x)
#define bswap_32(x) OSSwapInt32(x)
#define bswap_64(x) OSSwapInt64(x)
#elif defined(__GLIBC__) || defined(__CYGWIN__)
#include <byteswap.h> // IWYU pragma: export
#else
#elif !defined(__GLIBC__) && !defined(__CYGWIN__)
static inline uint16 bswap_16(uint16 x) {
return static_cast<uint16>(((x & 0xFF) << 8) | ((x & 0xFF00) >> 8));