From: Jonathan Wakely <jwakely@redhat.com>
Date: Wed, 24 Jun 2020 11:34:17 +0000 (+0100)
Subject: libstdc++: Fix warnings with -Wsystem-headers
X-Git-Tag: basepoints/gcc-12~6632
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=25920dd18ad12ea501309b1487366e22f35db631;p=thirdparty%2Fgcc.git

libstdc++: Fix warnings with -Wsystem-headers

libstdc++-v3/ChangeLog:

	* include/bits/stl_algobase.h (__find_if): Add FALLTHRU markers.
	* include/std/charconv (__detail::__to_chars): Avoid
	-Wsign-compare warning.
---

diff --git a/libstdc++-v3/include/bits/stl_algobase.h b/libstdc++-v3/include/bits/stl_algobase.h
index 4fc8850d707c..ff5b4505a080 100644
--- a/libstdc++-v3/include/bits/stl_algobase.h
+++ b/libstdc++-v3/include/bits/stl_algobase.h
@@ -2092,14 +2092,17 @@ _GLIBCXX_END_NAMESPACE_ALGO
 	  if (__pred(__first))
 	    return __first;
 	  ++__first;
+	  // FALLTHRU
 	case 2:
 	  if (__pred(__first))
 	    return __first;
 	  ++__first;
+	  // FALLTHRU
 	case 1:
 	  if (__pred(__first))
 	    return __first;
 	  ++__first;
+	  // FALLTHRU
 	case 0:
 	default:
 	  return __last;
diff --git a/libstdc++-v3/include/std/charconv b/libstdc++-v3/include/std/charconv
index 77a72d40dd0c..8fbf64058ee4 100644
--- a/libstdc++-v3/include/std/charconv
+++ b/libstdc++-v3/include/std/charconv
@@ -142,7 +142,7 @@ namespace __detail
 	'u', 'v', 'w', 'x', 'y', 'z'
       };
 
-      while (__val >= __base)
+      while (__val >= (unsigned)__base)
 	{
 	  auto const __quo = __val / __base;
 	  auto const __rem = __val % __base;