diff --git a/lib/stdio.in.h b/lib/stdio.in.h index aa7b599..2cdee26 100644 --- a/lib/stdio.in.h +++ b/lib/stdio.in.h @@ -698,26 +698,14 @@ _GL_WARN_ON_USE (getline, "getline is unportable - " # endif #endif -#if @GNULIB_GETS@ -# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@ -# if !(defined __cplusplus && defined GNULIB_NAMESPACE) -# undef gets -# define gets rpl_gets -# endif -_GL_FUNCDECL_RPL (gets, char *, (char *s) _GL_ARG_NONNULL ((1))); -_GL_CXXALIAS_RPL (gets, char *, (char *s)); -# else -_GL_CXXALIAS_SYS (gets, char *, (char *s)); -# undef gets -# endif -_GL_CXXALIASWARN (gets); /* It is very rare that the developer ever has full control of stdin, - so any use of gets warrants an unconditional warning. Assume it is - always declared, since it is required by C89. */ + so any use of gets warrants an unconditional warning; besides, C11 + removed it. */ +#undef gets +#if HAVE_RAW_DECL_GETS _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead"); #endif - #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@ struct obstack; /* Grow an obstack with formatted output. Return the number of @@ -1053,9 +1041,9 @@ _GL_WARN_ON_USE (snprintf, "snprintf is unportable - " # endif #endif -/* Some people would argue that sprintf should be handled like gets - (for example, OpenBSD issues a link warning for both functions), - since both can cause security holes due to buffer overruns. +/* Some people would argue that all sprintf uses should be warned about + (for example, OpenBSD issues a link warning for it), + since it can cause security holes due to buffer overruns. However, we believe that sprintf can be used safely, and is more efficient than snprintf in those safe cases; and as proof of our belief, we use sprintf in several gnulib modules. So this header diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4 index 1973e8d..b03393b 100644 --- a/m4/stdio_h.m4 +++ b/m4/stdio_h.m4 @@ -1,4 +1,4 @@ -# stdio_h.m4 serial 40 +# stdio_h.m4 serial 41 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -18,7 +18,6 @@ AC_DEFUN([gl_STDIO_H], GNULIB_GETC=1 GNULIB_GETCHAR=1 GNULIB_FGETS=1 - GNULIB_GETS=1 GNULIB_FREAD=1 dnl This ifdef is necessary to avoid an error "missing file lib/stdio-read.c" dnl "expected source file, required through AC_LIBSOURCES, not found". It is @@ -72,10 +71,10 @@ AC_DEFUN([gl_STDIO_H], dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use, and which is not - dnl guaranteed by C89. + dnl guaranteed by both C89 and C11. gl_WARN_ON_USE_PREPARE([[#include - ]], [dprintf fpurge fseeko ftello getdelim getline pclose popen renameat - snprintf tmpfile vdprintf vsnprintf]) + ]], [dprintf fpurge fseeko ftello getdelim getline gets pclose popen + renameat snprintf tmpfile vdprintf vsnprintf]) ]) AC_DEFUN([gl_STDIO_MODULE_INDICATOR], @@ -113,7 +112,6 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS], GNULIB_GETCHAR=0; AC_SUBST([GNULIB_GETCHAR]) GNULIB_GETDELIM=0; AC_SUBST([GNULIB_GETDELIM]) GNULIB_GETLINE=0; AC_SUBST([GNULIB_GETLINE]) - GNULIB_GETS=0; AC_SUBST([GNULIB_GETS]) GNULIB_OBSTACK_PRINTF=0; AC_SUBST([GNULIB_OBSTACK_PRINTF]) GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX]) GNULIB_PCLOSE=0; AC_SUBST([GNULIB_PCLOSE]) diff --git a/modules/stdio b/modules/stdio index 2e094b8..a389440 100644 --- a/modules/stdio +++ b/modules/stdio @@ -53,7 +53,6 @@ stdio.h: stdio.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) -e 's/@''GNULIB_GETCHAR''@/$(GNULIB_GETCHAR)/g' \ -e 's/@''GNULIB_GETDELIM''@/$(GNULIB_GETDELIM)/g' \ -e 's/@''GNULIB_GETLINE''@/$(GNULIB_GETLINE)/g' \ - -e 's/@''GNULIB_GETS''@/$(GNULIB_GETS)/g' \ -e 's/@''GNULIB_OBSTACK_PRINTF''@/$(GNULIB_OBSTACK_PRINTF)/g' \ -e 's/@''GNULIB_OBSTACK_PRINTF_POSIX''@/$(GNULIB_OBSTACK_PRINTF_POSIX)/g' \ -e 's/@''GNULIB_PCLOSE''@/$(GNULIB_PCLOSE)/g' \ diff --git a/tests/test-stdio-c++.cc b/tests/test-stdio-c++.cc index 699e2de..6400448 100644 --- a/tests/test-stdio-c++.cc +++ b/tests/test-stdio-c++.cc @@ -122,9 +122,7 @@ SIGNATURE_CHECK (GNULIB_NAMESPACE::getline, ssize_t, (char **, size_t *, FILE *)); #endif -#if GNULIB_TEST_GETS -SIGNATURE_CHECK (GNULIB_NAMESPACE::gets, char *, (char *)); -#endif +/* Don't bother testing gets; it should never be used. */ #if GNULIB_TEST_OBSTACK_PRINTF || GNULIB_TEST_OBSTACK_PRINTF_POSIX SIGNATURE_CHECK (GNULIB_NAMESPACE::obstack_printf, int, -- 1.7.7.6