50 lines
1.9 KiB
Diff
50 lines
1.9 KiB
Diff
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@@ -, +, @@
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libmissing/m4/stdio_h.m4 | 4 ++--
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libmissing/m4/warn-on-use.m4 | 4 ++--
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libmissing/stdio.in.h | 6 ++++--
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3 files changed, 8 insertions(+), 6 deletions(-)
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--- a/libmissing/m4/stdio_h.m4
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+++ a/libmissing/m4/stdio_h.m4
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@@ -34,9 +34,9 @@ AC_DEFUN([gl_STDIO_H],
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dnl Check for declarations of anything we want to poison if the
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dnl corresponding gnulib module is not in use, and which is not
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- dnl guaranteed by C89.
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+ dnl guaranteed by both C89 and C11.
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gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
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- ]], [dprintf fpurge fseeko ftello getdelim getline popen renameat
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+ ]], [dprintf fpurge fseeko ftello getdelim getline gets popen renameat
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snprintf vdprintf vsnprintf])
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])
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--- a/libmissing/m4/warn-on-use.m4
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+++ a/libmissing/m4/warn-on-use.m4
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@@ -18,8 +18,8 @@ dnl with or without modifications, as long as this notice is preserved.
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# some systems declare functions in the wrong header, then INCLUDES
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# should do likewise.
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#
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-# If you assume C89, then it is generally safe to assume declarations
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-# for functions declared in that standard (such as gets) without
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+# It is generally safe to assume declarations for functions declared
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+# in the intersection of C89 and C11 (such as printf) without
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# needing gl_WARN_ON_USE_PREPARE.
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AC_DEFUN([gl_WARN_ON_USE_PREPARE],
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[
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--- a/libmissing/stdio.in.h
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+++ a/libmissing/stdio.in.h
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@@ -114,10 +114,12 @@ _GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
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#endif
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/* It is very rare that the developer ever has full control of stdin,
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- so any use of gets warrants an unconditional warning. Assume it is
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- always declared, since it is required by C89. */
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+ so any use of gets warrants an unconditional warning; besides, C11
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+ removed it. */
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#undef gets
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+#if HAVE_RAW_DECL_GETS
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_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
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+#endif
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#if @GNULIB_FOPEN@
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# if @REPLACE_FOPEN@
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