Update from Gnulib

This incorporates:
2020-08-23 intprops: be consistent about +X vs X+0
2020-08-23 intprops: fix INT_MULTIPLY_WRAPV bit-field bug
2020-08-23 verify: Make assume work on bit field expressions
2020-08-23 libc-config: Improve comments
2020-08-22 verify: Do use __builtin_assume on clang
2020-08-22 sig2str: Add more signals
2020-08-21 sigdescr_np: New module
* lib/cdefs.h, lib/intprops.h, lib/sig2str.c, lib/string.in.h:
* lib/verify.h, m4/string_h.m4: Copy from Gnulib.
* lib/gnulib.mk.in: Regenerate.

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/string.in.h b/lib/string.in.h
index 5134e11289d..776133c5eba 100644
--- a/lib/string.in.h
+++ b/lib/string.in.h
@@ -1060,6 +1060,21 @@ _GL_WARN_ON_USE (sigabbrev_np, "sigabbrev_np is unportable - "
 # endif
 #endif
 
+/* Return an English description string for the signal number SIG.  */
+#if @GNULIB_SIGDESCR_NP@
+# if ! @HAVE_SIGDESCR_NP@
+_GL_FUNCDECL_SYS (sigdescr_np, const char *, (int sig));
+# endif
+_GL_CXXALIAS_SYS (sigdescr_np, const char *, (int sig));
+_GL_CXXALIASWARN (sigdescr_np);
+#elif defined GNULIB_POSIXCHECK
+# undef sigdescr_np
+# if HAVE_RAW_DECL_SIGDESCR_NP
+_GL_WARN_ON_USE (sigdescr_np, "sigdescr_np is unportable - "
+                 "use gnulib module sigdescr_np for portability");
+# endif
+#endif
+
 #if @GNULIB_STRSIGNAL@
 # if @REPLACE_STRSIGNAL@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)