From dae801527386f94e9d2fabf23c37863d1b599153 Mon Sep 17 00:00:00 2001
From: Roy Eldar <royeldar0@gmail.com>
Date: Thu, 25 May 2023 17:41:58 +0300
Subject: [PATCH] elf: fix handling of negative numbers in dl-printf
 
_dl_debug_vdprintf is a bare-bones printf implementation; currently
printing a signed integer (using "%d" format specifier) behaves
incorrectly when the number is negative, as it just prints the
corresponding unsigned integer, preceeded by a minus sign.
 
For example, _dl_printf("%d", -1) would print '-4294967295'.
 
Signed-off-by: Roy Eldar <royeldar0@gmail.com>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
 
Reference:https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=dae801527386f94e9d2fabf23c37863d1b599153
Conflict:NA
---
 elf/dl-misc.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
 
diff --git a/elf/dl-misc.c b/elf/dl-misc.c
index 4a33737c..bba2e714 100644
--- a/elf/dl-misc.c
+++ b/elf/dl-misc.c
@@ -193,19 +193,25 @@ _dl_debug_vdprintf (int fd, int tag_p, const char *fmt, va_list arg)
 		    if (long_mod)
 		      {
 			if ((long int) num < 0)
-			  negative = true;
+			    {
+          num = -num;
+          negative = true;
+          }
 		      }
 		    else
 		      {
 			if ((int) num < 0)
 			  {
-			    num = (unsigned int) num;
+			    num = -(unsigned int) num;
 			    negative = true;
 			  }
 		      }
 #else
 		    if ((int) num < 0)
-		      negative = true;
+          {
+            num = -num;
+            negative = true;
+          }
 #endif
 		  }
 
-- 
2.33.0

