From 149639d4f14ae921b4d14f6e35a840755b29f098 Mon Sep 17 00:00:00 2001 From: Petur Runolfsson Date: Wed, 3 Sep 2003 14:54:03 +0000 Subject: re PR libstdc++/12048 (unget does not work) 2003-09-03 Petur Runolfsson PR libstdc++/12048 * include/ext/stdio_sync_filebuf.h (stdio_sync_filebuf::_M_unget_buf): Declare it. (stdio_sync_filebuf::stdio_sync_filebuf): Initialize _M_unget_buf. (stdio_sync_filebuf::uflow): Store the returned character in _M_unget_buf. (stdio_sync_filebuf::pbackfail): If argument is eof(), pass _M_unget_buf to syncungetc(). Set _M_unget_buf to eof(). (stdio_sync_filebuf::xsgetn): Store last read character in _M_unget_buf, if any, else eof(). (stdio_sync_filebuf::xsgetn: Store last read character in _M_unget_buf, if any, else eof(). * testsuite/27_io/objects/char/12048.cc: Rename to... * testsuite/27_io/objects/char/12048-1.cc: ...this. * testsuite/27_io/objects/char/12048-2.cc: New test. * testsuite/27_io/objects/char/12048-3.cc: New test. * testsuite/27_io/objects/char/12048-4.cc: New test. * testsuite/27_io/objects/char/12048-5.cc: New test. XFAIL. * testsuite/27_io/objects/wchar_t/12048-1.cc: New test. * testsuite/27_io/objects/wchar_t/12048-2.cc: New test. * testsuite/27_io/objects/wchar_t/12048-3.cc: New test. * testsuite/27_io/objects/wchar_t/12048-4.cc: New test. * testsuite/27_io/objects/wchar_t/12048-5.cc: New test. XFAIL. * testsuite/ext/stdio_sync_filebuf_char.cc (test02, test03, test04, test05): New tests. * testsuite/ext/stdio_sync_filebuf_wchar_t.cc (test02, test03, test04, test05): New tests. 2003-09-03 Petur Runolfsson * docs/html/27_io/howto.html: setbuf(0, 0) has no effect on stringbuf or strstreambuf. Fix typos. From-SVN: r71026 --- .../testsuite/ext/stdio_sync_filebuf_char.cc | 78 +++++++++++++++++++++- .../testsuite/ext/stdio_sync_filebuf_wchar_t.cc | 78 +++++++++++++++++++++- 2 files changed, 154 insertions(+), 2 deletions(-) (limited to 'libstdc++-v3/testsuite/ext') diff --git a/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_char.cc b/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_char.cc index cffcf37..0958296 100644 --- a/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_char.cc +++ b/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_char.cc @@ -52,13 +52,89 @@ void test01() VERIFY( sbuf.sgetn(buf, 5) == 5 ); VERIFY( !memcmp(buf, c_lit + 3, 5) ); VERIFY( getc(fin) == c_lit[8] ); - VERIFY( sbuf.sungetc() == EOF ); fclose(fin); } +// libstdc++/12048 +void test02() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + int c1 = sbuf.sbumpc(); + VERIFY( c1 != EOF ); + int c2 = sbuf.sungetc(); + VERIFY( c2 != EOF ); + int c3 = sbuf.sbumpc(); + VERIFY( c3 == c1 ); + + std::fclose(file); +} + +// libstdc++/12048 +void test03() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + int c1 = sbuf.sbumpc(); + VERIFY( c1 != EOF ); + int c2 = sbuf.sungetc(); + VERIFY( c2 != EOF ); + int c3 = std::fgetc(file); + VERIFY( c3 == c1 ); + + std::fclose(file); +} + +// libstdc++/12048 +void test04() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + char buf[2]; + VERIFY( sbuf.sgetn(buf, 2) == 2 ); + int c2 = sbuf.sungetc(); + VERIFY( c2 != EOF ); + int c3 = sbuf.sbumpc(); + VERIFY( c3 == std::char_traits::to_int_type(buf[1]) ); + + std::fclose(file); +} + +// libstdc++/12048 +void test05() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + char buf[2]; + VERIFY( sbuf.sgetn(buf, 2) == 2 ); + int c2 = sbuf.sungetc(); + VERIFY( c2 != EOF ); + int c3 = std::fgetc(file); + VERIFY( c3 == std::char_traits::to_int_type(buf[1]) ); + + std::fclose(file); +} + int main () { test01(); + test02(); + test03(); + test04(); + test05(); + return 0; } diff --git a/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_wchar_t.cc b/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_wchar_t.cc index a8cde4a..25276a2 100644 --- a/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_wchar_t.cc +++ b/libstdc++-v3/testsuite/ext/stdio_sync_filebuf_wchar_t.cc @@ -53,13 +53,89 @@ void test01() VERIFY( wsbuf.sgetn(buf, 5) == 5 ); VERIFY( !wmemcmp(buf, w_lit + 3, 5) ); VERIFY( getwc(fin) == w_lit[8] ); - VERIFY( wsbuf.sungetc() == WEOF ); fclose(fin); } +// libstdc++/12048 +void test02() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + std::wint_t c1 = sbuf.sbumpc(); + VERIFY( c1 != WEOF ); + std::wint_t c2 = sbuf.sungetc(); + VERIFY( c2 != WEOF ); + std::wint_t c3 = sbuf.sbumpc(); + VERIFY( c3 == c1 ); + + std::fclose(file); +} + +// libstdc++/12048 +void test03() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + std::wint_t c1 = sbuf.sbumpc(); + VERIFY( c1 != WEOF ); + std::wint_t c2 = sbuf.sungetc(); + VERIFY( c2 != WEOF ); + std::wint_t c3 = std::fgetwc(file); + VERIFY( c3 == c1 ); + + std::fclose(file); +} + +// libstdc++/12048 +void test04() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + wchar_t buf[2]; + VERIFY( sbuf.sgetn(buf, 2) == 2 ); + std::wint_t c2 = sbuf.sungetc(); + VERIFY( c2 != WEOF ); + std::wint_t c3 = sbuf.sbumpc(); + VERIFY( c3 == std::char_traits::to_int_type(buf[1]) ); + + std::fclose(file); +} + +// libstdc++/12048 +void test05() +{ + bool test = true; + const char* name = "cin_unget-1.txt"; + + std::FILE* file = std::fopen(name, "r"); + __gnu_cxx::stdio_sync_filebuf sbuf(file); + wchar_t buf[2]; + VERIFY( sbuf.sgetn(buf, 2) == 2 ); + std::wint_t c2 = sbuf.sungetc(); + VERIFY( c2 != WEOF ); + std::wint_t c3 = std::fgetwc(file); + VERIFY( c3 == std::char_traits::to_int_type(buf[1]) ); + + std::fclose(file); +} + int main () { test01(); + test02(); + test03(); + test04(); + test05(); + return 0; } -- cgit v1.1