Merge pull request #2746 from Romain-Geissler-1A:master
PiperOrigin-RevId: 302045808
diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index 60ff471..21fcf82 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -252,6 +252,8 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+
+#include <cerrno>
#include <cstdint>
#include <limits>
#include <type_traits>
@@ -1960,16 +1962,16 @@
typedef struct _stat StatStruct;
# ifdef __BORLANDC__
-inline int IsATTY(int fd) { return isatty(fd); }
+inline int DoIsATTY(int fd) { return isatty(fd); }
inline int StrCaseCmp(const char* s1, const char* s2) {
return stricmp(s1, s2);
}
inline char* StrDup(const char* src) { return strdup(src); }
# else // !__BORLANDC__
# if GTEST_OS_WINDOWS_MOBILE
-inline int IsATTY(int /* fd */) { return 0; }
+inline int DoIsATTY(int /* fd */) { return 0; }
# else
-inline int IsATTY(int fd) { return _isatty(fd); }
+inline int DoIsATTY(int fd) { return _isatty(fd); }
# endif // GTEST_OS_WINDOWS_MOBILE
inline int StrCaseCmp(const char* s1, const char* s2) {
return _stricmp(s1, s2);
@@ -1994,7 +1996,7 @@
typedef struct stat StatStruct;
inline int FileNo(FILE* file) { return fileno(file); }
-inline int IsATTY(int fd) { return isatty(fd); }
+inline int DoIsATTY(int fd) { return isatty(fd); }
inline int Stat(const char* path, StatStruct* buf) {
// stat function not implemented on ESP8266
return 0;
@@ -2011,7 +2013,7 @@
typedef struct stat StatStruct;
inline int FileNo(FILE* file) { return fileno(file); }
-inline int IsATTY(int fd) { return isatty(fd); }
+inline int DoIsATTY(int fd) { return isatty(fd); }
inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); }
inline int StrCaseCmp(const char* s1, const char* s2) {
return strcasecmp(s1, s2);
@@ -2022,6 +2024,17 @@
#endif // GTEST_OS_WINDOWS
+inline int IsATTY(int fd) {
+ // DoIsATTY might change errno (for example ENOTTY in case you redirect stdout
+ // to a file on Linux), which is unexpected, so save the previous value, and
+ // restore it after the call.
+ int savedErrno = errno;
+ int isAttyValue = DoIsATTY(fd);
+ errno = savedErrno;
+
+ return isAttyValue;
+}
+
// Functions deprecated by MSVC 8.0.
GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
