package/localedef/2.30-67-g4748829f86a458b76642f3e98b1d80f7b868e427/0003-localedef-Use-initializer-for-flexible-array-member-.patch

From 6fea0a8e33760258c4baa5d0a6f3a145897427fe Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 3 Sep 2019 14:01:39 +0200
Subject: [PATCH] localedef: Use initializer for flexible array member [BZ
 #24950]

struct charseq used a zero-length array instead of a flexible array
member.  This required a strange construct to initialize struct
charseq objects, and GCC 10 warns about that:

cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
In file included from programs/repertoire.h:24,
                 from programs/localedef.h:32,
                 from programs/ld-ctype.c:35:
programs/charmap.h:63:17: note: destination object declared here
   63 |   unsigned char bytes[0];
      |                 ^~~~~
cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
programs/charmap.h:63:17: note: destination object declared here
cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
programs/charmap.h:63:17: note: destination object declared here
cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
programs/charmap.h:63:17: note: destination object declared here

The change makes the object physically const, but it is not expected
to be modified.

[Upstream: https://sourceware.org/git/?p=glibc.git;a=patch;h=1471fa556afb428c4a4c46cf5543a4101d5bcf91]
[Dropped confliciting ChangeLog part]
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
---
 locale/programs/charmap.h  |  2 +-
 locale/programs/ld-ctype.c | 12 ++++++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/locale/programs/charmap.h b/locale/programs/charmap.h
index 870a9e95..70db330d 100644
--- a/locale/programs/charmap.h
+++ b/locale/programs/charmap.h
@@ -60,7 +60,7 @@ struct charseq
   const char *name;
   uint32_t ucs4;
   int nbytes;
-  unsigned char bytes[0];
+  unsigned char bytes[];
 };
 
 
diff --git a/locale/programs/ld-ctype.c b/locale/programs/ld-ctype.c
index cfc9c43f..9123f64a 100644
--- a/locale/programs/ld-ctype.c
+++ b/locale/programs/ld-ctype.c
@@ -842,8 +842,6 @@ no input digits defined and none of the standard names in the charmap"));
   for (cnt = 0; cnt < 10; ++cnt)
     if (ctype->mboutdigits[cnt] == NULL)
       {
-	static struct charseq replace[2];
-
 	if (!warned)
 	  {
 	    record_error (0, 0, _("\
@@ -851,10 +849,12 @@ not all characters used in `outdigit' are available in the charmap"));
 	    warned = 1;
 	  }
 
-	replace[0].nbytes = 1;
-	replace[0].bytes[0] = '?';
-	replace[0].bytes[1] = '\0';
-	ctype->mboutdigits[cnt] = &replace[0];
+	static const struct charseq replace =
+	  {
+	     .nbytes = 1,
+	     .bytes = "?",
+	  };
+	ctype->mboutdigits[cnt] = (struct charseq *) &replace;
       }
 
   warned = 0;
-- 
2.26.0