Update contrib/libs/backtrace to 2026-05-04

commit_hash:75812c00534578aff5d0f5016471ddb9ea2d1ff7

20 files changed, 90 insertions, 51 deletions

diff --git a/contrib/libs/backtrace/.yandex_meta/devtools.copyrights.report b/contrib/libs/backtrace/.yandex_meta/devtools.copyrights.report
index 01f58790f4d..21b2b4f913c 100644
--- a/contrib/libs/backtrace/.yandex_meta/devtools.copyrights.report
+++ b/contrib/libs/backtrace/.yandex_meta/devtools.copyrights.report
@@ -29,18 +29,6 @@
 # FILE_INCLUDE - include all file data into licenses text file
 # =======================
 
-KEEP     COPYRIGHT_SERVICE_LABEL 4f69198d68548caef8c50fb4646f2739
-BELONGS ya.make
-    License text:
-           Copyright (C) 2013-2024 Free Software Foundation, Inc.
-           Written by Ian Lance Taylor, Google.
-    Scancode info:
-        Original SPDX id: COPYRIGHT_SERVICE_LABEL
-        Score           : 100.00
-        Match type      : COPYRIGHT
-    Files with this license:
-        atomic.c [2:3]
-
 KEEP     COPYRIGHT_SERVICE_LABEL 89987ec1024c9f4d65e939d586271b9f
 BELONGS ya.make
     License text:
@@ -52,10 +40,10 @@ BELONGS ya.make
     Files with this license:
         LICENSE [1:1]
 
-KEEP     COPYRIGHT_SERVICE_LABEL 9d441f897facb23890579094470bd947
+KEEP     COPYRIGHT_SERVICE_LABEL 90f7cd8fe73b03472491ea6f83d8a1cc
 BELONGS ya.make
     License text:
-           Copyright (C) 2012-2024 Free Software Foundation, Inc.
+           Copyright (C) 2012-2026 Free Software Foundation, Inc.
            Written by Ian Lance Taylor, Google.
     Scancode info:
         Original SPDX id: COPYRIGHT_SERVICE_LABEL
@@ -77,17 +65,17 @@ BELONGS ya.make
         sort.c [2:3]
         state.c [2:3]
 
-KEEP     COPYRIGHT_SERVICE_LABEL cc5dd31c1484abddecff8fc275f5c9cc
+KEEP     COPYRIGHT_SERVICE_LABEL d8107155acc25c1eab0150c3d896cffb
 BELONGS ya.make
     License text:
-           Copyright (C) 2020-2024 Free Software Foundation, Inc.
+           Copyright (C) 2013-2026 Free Software Foundation, Inc.
            Written by Ian Lance Taylor, Google.
     Scancode info:
         Original SPDX id: COPYRIGHT_SERVICE_LABEL
         Score           : 100.00
         Match type      : COPYRIGHT
     Files with this license:
-        macho.c [2:3]
+        atomic.c [2:3]
 
 KEEP     COPYRIGHT_SERVICE_LABEL ed42dfc770f5954f5d7da31d293c2a5e
 BELONGS ya.make
@@ -100,3 +88,15 @@ BELONGS ya.make
         Match type      : COPYRIGHT
     Files with this license:
         filenames.h [2:3]
+
+KEEP     COPYRIGHT_SERVICE_LABEL f793e18405af8008bab7fd80acdea05f
+BELONGS ya.make
+    License text:
+           Copyright (C) 2020-2026 Free Software Foundation, Inc.
+           Written by Ian Lance Taylor, Google.
+    Scancode info:
+        Original SPDX id: COPYRIGHT_SERVICE_LABEL
+        Score           : 100.00
+        Match type      : COPYRIGHT
+    Files with this license:
+        macho.c [2:3]
diff --git a/contrib/libs/backtrace/.yandex_meta/licenses.list.txt b/contrib/libs/backtrace/.yandex_meta/licenses.list.txt
index 334d18242f3..229391a5715 100644
--- a/contrib/libs/backtrace/.yandex_meta/licenses.list.txt
+++ b/contrib/libs/backtrace/.yandex_meta/licenses.list.txt
@@ -67,17 +67,17 @@ The libbacktrace library is provided under a BSD license.
 
 
 ====================COPYRIGHT====================
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 
 ====================COPYRIGHT====================
-   Copyright (C) 2013-2024 Free Software Foundation, Inc.
+   Copyright (C) 2013-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 
 ====================COPYRIGHT====================
-   Copyright (C) 2020-2024 Free Software Foundation, Inc.
+   Copyright (C) 2020-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 
diff --git a/contrib/libs/backtrace/.yandex_meta/override.nix b/contrib/libs/backtrace/.yandex_meta/override.nix
index f96f9dd4cbb..d0a6a4c1819 100644
--- a/contrib/libs/backtrace/.yandex_meta/override.nix
+++ b/contrib/libs/backtrace/.yandex_meta/override.nix
@@ -1,11 +1,11 @@
 pkgs: attrs: with pkgs; with attrs; rec {
-  version = "2025-11-06";
+  version = "2026-05-04";
 
   src = fetchFromGitHub {
     owner = "ianlancetaylor";
     repo = "libbacktrace";
-    rev = "b9e40069c0b47a722286b94eb5231f7f05c08713";
-    hash = "sha256-vi33Bhg2LT5uWN63PHkD8CaOjTXBwZhBwFFhaezJ0e4=";
+    rev = "96664e69b1ecdb76e824be1d9e8f475b76dd08cf";
+    hash = "sha256-+tV6W8SnFWKweAASvFfb+i6bz73ssVGikNhVpq3YbT4=";
   };
 
   patches = [];
diff --git a/contrib/libs/backtrace/atomic.c b/contrib/libs/backtrace/atomic.c
index 97cc8ec9f91..c98280a0f39 100644
--- a/contrib/libs/backtrace/atomic.c
+++ b/contrib/libs/backtrace/atomic.c
@@ -1,5 +1,5 @@
 /* atomic.c -- Support for atomic functions if not present.
-   Copyright (C) 2013-2024 Free Software Foundation, Inc.
+   Copyright (C) 2013-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/backtrace-supported.h b/contrib/libs/backtrace/backtrace-supported.h
index 39482feb9e5..1e01c5bb369 100644
--- a/contrib/libs/backtrace/backtrace-supported.h
+++ b/contrib/libs/backtrace/backtrace-supported.h
@@ -1,5 +1,5 @@
 /* backtrace-supported.h.in -- Whether stack backtrace is supported.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/backtrace.c b/contrib/libs/backtrace/backtrace.c
index 3e6b81e9a3f..3935a3ed968 100644
--- a/contrib/libs/backtrace/backtrace.c
+++ b/contrib/libs/backtrace/backtrace.c
@@ -1,5 +1,5 @@
 /* backtrace.c -- Entry point for stack backtrace library.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/backtrace.h b/contrib/libs/backtrace/backtrace.h
index de92a3afb35..14a57c415bb 100644
--- a/contrib/libs/backtrace/backtrace.h
+++ b/contrib/libs/backtrace/backtrace.h
@@ -1,5 +1,5 @@
 /* backtrace.h -- Public header file for stack backtrace library.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/dwarf.c b/contrib/libs/backtrace/dwarf.c
index 81af2b59057..58f6e4e1e2b 100644
--- a/contrib/libs/backtrace/dwarf.c
+++ b/contrib/libs/backtrace/dwarf.c
@@ -1,5 +1,5 @@
 /* dwarf.c -- Get file/line information from DWARF for backtraces.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/elf.c b/contrib/libs/backtrace/elf.c
index 68aca44965f..0c413686c20 100644
--- a/contrib/libs/backtrace/elf.c
+++ b/contrib/libs/backtrace/elf.c
@@ -1,5 +1,5 @@
 /* elf.c -- Get debug data from an ELF file for backtraces.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
@@ -4338,15 +4338,17 @@ elf_zstd_unpack_seq_decode (int mode,
   return 1;
 }
 
-/* Decompress a zstd stream from PIN/SIN to POUT/SOUT.  Code based on RFC 8878.
+/* Decompress a single zstd frame from *PPIN, ending at PINEND, to *PPOUT/SOUT.
    Return 1 on success, 0 on error.  */
 
 static int
-elf_zstd_decompress (const unsigned char *pin, size_t sin,
-		     unsigned char *zdebug_table, unsigned char *pout,
-		     size_t sout)
+elf_zstd_decompress_frame (const unsigned char **ppin,
+			   const unsigned char *pinend,
+			   unsigned char *zdebug_table, unsigned char **ppout,
+			   size_t sout)
 {
-  const unsigned char *pinend;
+  const unsigned char *pin;
+  unsigned char *pout;
   unsigned char *poutstart;
   unsigned char *poutend;
   struct elf_zstd_seq_decode literal_decode;
@@ -4366,9 +4368,9 @@ elf_zstd_decompress (const unsigned char *pin, size_t sin,
   uint64_t content_size;
   int last_block;
 
-  pinend = pin + sin;
+  pin = *ppin;
+  pout = *ppout;
   poutstart = pout;
-  poutend = pout + sout;
 
   literal_decode.table = NULL;
   literal_decode.table_bits = -1;
@@ -4394,7 +4396,7 @@ elf_zstd_decompress (const unsigned char *pin, size_t sin,
   repeated_offset2 = 4;
   repeated_offset3 = 8;
 
-  if (unlikely (sin < 4))
+  if (unlikely (pinend - pin < 4))
     {
       elf_uncompress_failed ();
       return 0;
@@ -4492,12 +4494,14 @@ elf_zstd_decompress (const unsigned char *pin, size_t sin,
     }
 
   if (unlikely (content_size != (size_t) content_size
-		|| (size_t) content_size != sout))
+		|| (size_t) content_size > sout))
     {
       elf_uncompress_failed ();
       return 0;
     }
 
+  poutend = pout + content_size;
+
   last_block = 0;
   while (!last_block)
     {
@@ -4996,7 +5000,42 @@ elf_zstd_decompress (const unsigned char *pin, size_t sin,
       pin += 4;
     }
 
-  if (pin != pinend)
+  *ppin = pin;
+  *ppout = pout;
+
+  return 1;
+}
+
+/* Decompress a zstd stream from PIN/SIN to POUT/SOUT.  Code based on RFC 8878.
+   Return 1 on success, 0 on error.  */
+
+static int
+elf_zstd_decompress (const unsigned char *pin, size_t sin,
+		     unsigned char *zdebug_table, unsigned char *pout,
+		     size_t sout)
+{
+  const unsigned char *pinend;
+
+  pinend = pin + sin;
+
+  while (sin > 0)
+    {
+      const unsigned char *pin_frame;
+      unsigned char *pout_frame;
+
+      pin_frame = pin;
+      pout_frame = pout;
+      if (!elf_zstd_decompress_frame (&pin_frame, pinend, zdebug_table,
+				      &pout_frame, sout))
+	return 0;
+
+      sin -= pin_frame - pin;
+      pin = pin_frame;
+      sout -= pout_frame - pout;
+      pout = pout_frame;
+    }
+
+  if (sout > 0)
     {
       elf_uncompress_failed ();
       return 0;
diff --git a/contrib/libs/backtrace/fileline.c b/contrib/libs/backtrace/fileline.c
index 904b224ad90..82535e3f6cf 100644
--- a/contrib/libs/backtrace/fileline.c
+++ b/contrib/libs/backtrace/fileline.c
@@ -1,5 +1,5 @@
 /* fileline.c -- Get file and line number information in a backtrace.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/internal.h b/contrib/libs/backtrace/internal.h
index 6164c01a580..17c4106ea6d 100644
--- a/contrib/libs/backtrace/internal.h
+++ b/contrib/libs/backtrace/internal.h
@@ -1,5 +1,5 @@
 /* internal.h -- Internal header file for stack backtrace library.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/macho.c b/contrib/libs/backtrace/macho.c
index 9f8738dd784..5eab4a6c7f8 100644
--- a/contrib/libs/backtrace/macho.c
+++ b/contrib/libs/backtrace/macho.c
@@ -1,5 +1,5 @@
 /* elf.c -- Get debug data from a Mach-O file for backtraces.
-   Copyright (C) 2020-2024 Free Software Foundation, Inc.
+   Copyright (C) 2020-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/mmap.c b/contrib/libs/backtrace/mmap.c
index 322ed945669..d452427c51f 100644
--- a/contrib/libs/backtrace/mmap.c
+++ b/contrib/libs/backtrace/mmap.c
@@ -1,5 +1,5 @@
 /* mmap.c -- Memory allocation with mmap.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/mmapio.c b/contrib/libs/backtrace/mmapio.c
index b780c3d07df..775419a4279 100644
--- a/contrib/libs/backtrace/mmapio.c
+++ b/contrib/libs/backtrace/mmapio.c
@@ -1,5 +1,5 @@
 /* mmapio.c -- File views using mmap.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/posix.c b/contrib/libs/backtrace/posix.c
index 79f4950f84b..e6ce23ffb0e 100644
--- a/contrib/libs/backtrace/posix.c
+++ b/contrib/libs/backtrace/posix.c
@@ -1,5 +1,5 @@
 /* posix.c -- POSIX file I/O routines for the backtrace library.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/print.c b/contrib/libs/backtrace/print.c
index d4637af9a4f..0d41ff08b26 100644
--- a/contrib/libs/backtrace/print.c
+++ b/contrib/libs/backtrace/print.c
@@ -1,5 +1,5 @@
 /* print.c -- Print the current backtrace.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/simple.c b/contrib/libs/backtrace/simple.c
index fd3fac688fa..fa632fe8d77 100644
--- a/contrib/libs/backtrace/simple.c
+++ b/contrib/libs/backtrace/simple.c
@@ -1,5 +1,5 @@
 /* simple.c -- The backtrace_simple function.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/sort.c b/contrib/libs/backtrace/sort.c
index fedfe21cbdf..ad2085f1800 100644
--- a/contrib/libs/backtrace/sort.c
+++ b/contrib/libs/backtrace/sort.c
@@ -1,5 +1,5 @@
 /* sort.c -- Sort without allocating memory
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/state.c b/contrib/libs/backtrace/state.c
index b564a18b548..8c201624006 100644
--- a/contrib/libs/backtrace/state.c
+++ b/contrib/libs/backtrace/state.c
@@ -1,5 +1,5 @@
 /* state.c -- Create the backtrace state.
-   Copyright (C) 2012-2024 Free Software Foundation, Inc.
+   Copyright (C) 2012-2026 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Google.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/contrib/libs/backtrace/ya.make b/contrib/libs/backtrace/ya.make
index 288af048c7e..b8ff9cb23a9 100644
--- a/contrib/libs/backtrace/ya.make
+++ b/contrib/libs/backtrace/ya.make
@@ -6,9 +6,9 @@ LICENSE(BSD-3-Clause)
 
 LICENSE_TEXTS(.yandex_meta/licenses.list.txt)
 
-VERSION(2025-11-06)
+VERSION(2026-05-04)
 
-ORIGINAL_SOURCE(https://github.com/ianlancetaylor/libbacktrace/archive/b9e40069c0b47a722286b94eb5231f7f05c08713.tar.gz)
+ORIGINAL_SOURCE(https://github.com/ianlancetaylor/libbacktrace/archive/96664e69b1ecdb76e824be1d9e8f475b76dd08cf.tar.gz)
 
 ADDINCL(
     contrib/libs/backtrace