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diff doc/glibc-functions/ptsname_r.texi @ 40140:81f075eaa990

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ptsname_r: Work around bug on Android 4.3. * m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is correct. * lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R is defined, just fix the return value. * doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword: The behaviour of musl libc is nothing to be "fixed", since it is compliant with the next POSIX standard.
author Bruno Haible <bruno@clisp.org>
date Sat, 26 Jan 2019 15:23:19 +0100
parents 73d60b1f9c96
children
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--- a/doc/glibc-functions/ptsname_r.texi	Sat Jan 26 11:56:31 2019 +0100
+++ b/doc/glibc-functions/ptsname_r.texi	Sat Jan 26 15:23:19 2019 +0100
@@ -18,12 +18,17 @@
 @item
 This function has an incompatible declaration on some platforms:
 OSF/1 5.1.
+@item
+When this functions fails, it returns -1 instead of the error code
+on some platforms:
+Android 4.3.
 @end itemize
 
 Portability problems not fixed by Gnulib:
 @itemize
-@item
-When this functions fails, it provides the error code only as the
-return value, without setting @code{errno}, on some platforms:
-musl libc.
 @end itemize
+
+Note: Portable programs should expect to find the error code as the
+return value of this function, not as the value of @code{errno}.
+This is needed for compatibility with musl libc and with the
+forthcoming POSIX Issue 8.