[llvm] [symbolizer] Update Release notes. (PR #142951)

[Ebuka Ezike via llvm-commits]

https://github.com/da-viper created https://github.com/llvm/llvm-project/pull/142951

Also add post-commit changes from commit #71ba852

in PR #135857

>From da61e6d2fb0421f02c1205649e9ceacf0312f355 Mon Sep 17 00:00:00 2001
From: Ebuka Ezike <yerimyah1 at gmail.com>
Date: Thu, 5 Jun 2025 12:58:59 +0100
Subject: [PATCH] [symbolizer] Update Release notes.

Also add post-commit changes from commit #71ba852
---
 llvm/docs/CommandGuide/llvm-addr2line.rst          | 3 +++
 llvm/docs/ReleaseNotes.md                          | 1 +
 llvm/test/tools/llvm-symbolizer/symbol-search.test | 2 +-
 llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp     | 2 +-
 4 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/llvm/docs/CommandGuide/llvm-addr2line.rst b/llvm/docs/CommandGuide/llvm-addr2line.rst
index 646a159cd24a6..49faa3c5e811e 100644
--- a/llvm/docs/CommandGuide/llvm-addr2line.rst
+++ b/llvm/docs/CommandGuide/llvm-addr2line.rst
@@ -36,6 +36,9 @@ Here are some of those differences:
 -  ``llvm-addr2line`` parses options from the environment variable
    ``LLVM_ADDR2LINE_OPTS`` instead of from ``LLVM_SYMBOLIZER_OPTS``.
 
+- ``llvm-addr2line`` accepts an address with a '+' prefix ie `+0x00777fff`
+  this is not valid in ``llvm-symbolizer``
+
 SEE ALSO
 --------
 
diff --git a/llvm/docs/ReleaseNotes.md b/llvm/docs/ReleaseNotes.md
index 7d734f2e258e6..280744aaf780f 100644
--- a/llvm/docs/ReleaseNotes.md
+++ b/llvm/docs/ReleaseNotes.md
@@ -265,6 +265,7 @@ Changes to the LLVM tools
 * llvm-strip now supports continuing to process files on encountering an error.
 * In llvm-objcopy/llvm-strip's ELF port, `--discard-locals` and `--discard-all` now allow and preserve symbols referenced by relocations.
   ([#47468](https://github.com/llvm/llvm-project/issues/47468))
+* llvm-addr2line now supports a `+` prefix when specifying an address.
 
 Changes to LLDB
 ---------------------------------
diff --git a/llvm/test/tools/llvm-symbolizer/symbol-search.test b/llvm/test/tools/llvm-symbolizer/symbol-search.test
index b785cf1596fad..bb07c54e100b5 100644
--- a/llvm/test/tools/llvm-symbolizer/symbol-search.test
+++ b/llvm/test/tools/llvm-symbolizer/symbol-search.test
@@ -66,7 +66,7 @@ RUN: llvm-addr2line --obj=%p/Inputs/symbols.so func_01+0A | FileCheck --check-pr
 
 # If '+' is not preceded by a symbol, it is part of a symbol name, not an offset separator.
 RUN: llvm-symbolizer --obj=%p/Inputs/symbols.so +0x1138 | FileCheck --check-prefix=NONEXISTENT %s
-# in addr2line address starting with a `+` sign is a valid address
+# In addr2line address starting with a `+` sign is a valid address.
 RUN: llvm-addr2line --obj=%p/Inputs/symbols.so +0x1138 | FileCheck --check-prefix=CODE-CMD %s
 
 # Show that C++ mangled names may be specified.
diff --git a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
index a682a0762c393..4784dafeb2948 100644
--- a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -238,7 +238,7 @@ static Error parseCommand(StringRef BinaryName, bool IsAddr2Line,
   bool StartsWithDigit = std::isdigit(AddrSpec.front());
 
   // GNU addr2line assumes the address is hexadecimal and allows a redundant
-  // "0x" or "0X" prefix or with an optional `+` sign; do the same for
+  // "0x", "0X" prefix or an optional `+` sign; do the same for
   // compatibility.
   if (IsAddr2Line) {
     AddrSpec.consume_front_insensitive("0x") ||