Fixed -Wmaybe-uninitialized warnings

These warnings are only triggered when a combination of
`-Wmaybe-uninitialized` and `-ftrivial-auto-var-init=zero` is used
with GCC 14.2 or later.

Author: ashtum

CHANGELOG.md

@@ -7,8 +7,8 @@ Version 358:
 * Removed moved sections from documentation
 * Removed superfluous log messages from tests
 * Fixed portability issues for building tests in MinGW
-* Fixed portability issues for building tests in MinGW
 * Fixed `std::is_trivial` deprecation warnings
+* Fixed `-Wmaybe-uninitialized` warnings
 
 --------------------------------------------------------------------------------
 

doc/qbk/release_notes.qbk

@@ -19,6 +19,7 @@
 * [issue 2999] Used `handshake_timeout` for closing handshake during read operations
 * [issue 3003] Added missing `cstdint` header to `detail/cpu_info.hpp`
 * [issue 3016] Fixed `std::is_trivial` deprecation warnings
+* [issue 3019] Fixed `-Wmaybe-uninitialized` warnings
 
 [*Improvements]
 

include/boost/beast/websocket/impl/stream_impl.hpp

@@ -825,8 +825,7 @@ parse_fh(
     {
     case 126:
     {
-
-        std::uint16_t len_be;
+        std::uint16_t len_be = {};
         BOOST_ASSERT(buffer_bytes(cb) >= sizeof(len_be));
         cb.consume(net::buffer_copy(
             net::mutable_buffer(&len_be, sizeof(len_be)), cb));
@@ -841,7 +840,7 @@ parse_fh(
     }
     case 127:
     {
-        std::uint64_t len_be;
+        std::uint64_t len_be = {};
         BOOST_ASSERT(buffer_bytes(cb) >= sizeof(len_be));
         cb.consume(net::buffer_copy(
             net::mutable_buffer(&len_be, sizeof(len_be)), cb));
@@ -857,7 +856,7 @@ parse_fh(
     }
     if(fh.mask)
     {
-        std::uint32_t key_le;
+        std::uint32_t key_le = {};
         BOOST_ASSERT(buffer_bytes(cb) >= sizeof(key_le));
         cb.consume(net::buffer_copy(
             net::mutable_buffer(&key_le, sizeof(key_le)), cb));