Bug 309174 – Build warnings with Clang 21 and libstdc++ 16

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Michael Catanzaro]

[457/9707] Building C object Source/bmalloc/CMakeFiles/bmalloc.dir/libpas/src/libpas/bmalloc_type.c.o
/home/mcatanzaro/Projects/WebKit/Source/bmalloc/libpas/src/libpas/bmalloc_type.c:62:32: warning: assigning to 'char *' from 'const char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
   62 |     type_name_start_marker_ptr = strstr(name, type_name_start_marker);
      |                                ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mcatanzaro/Projects/WebKit/Source/bmalloc/libpas/src/libpas/bmalloc_type.c:79:46: warning: assigning to 'char *' from 'const char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
   79 |                 flexible_array_member_marker = strstr(name, "primitiveHeapRefForTypeWithFlexibleArrayMember");
      |                                              ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.



[7513/9707] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/API/glib/JSCContext.cpp.o
/home/mcatanzaro/Projects/WebKit/Source/JavaScriptCore/API/glib/JSCContext.cpp:882:98: warning: the two-parameter std::span construction is unsafe as it can introduce mismatch between buffer size and the bound information [-Wunsafe-buffer-usage-in-container]
  882 |     JSValueRef result = evaluateScriptInContext(context->priv->jsContext.get(), String::fromUTF8(std::span(code, length < 0 ? strlen(code) : length)), uri, lineNumber, &exception);
      |                                                                                                  ^
/home/mcatanzaro/Projects/WebKit/Source/JavaScriptCore/API/glib/JSCContext.cpp:882:127: warning: function 'strlen' is unsafe [-Wunsafe-buffer-usage-in-libc-call]
  882 |     JSValueRef result = evaluateScriptInContext(context->priv->jsContext.get(), String::fromUTF8(std::span(code, length < 0 ? strlen(code) : length)), uri, lineNumber, &exception);
      |                                                                                                                               ^~~~~~~~~~~~
/home/mcatanzaro/Projects/WebKit/Source/JavaScriptCore/API/glib/JSCContext.cpp:922:87: warning: the two-parameter std::span construction is unsafe as it can introduce mismatch between buffer size and the bound information [-Wunsafe-buffer-usage-in-container]
  922 |     JSValueRef result = evaluateScriptInContext(objectContext.get(), String::fromUTF8(std::span(code, length < 0 ? strlen(code) : length)), uri, lineNumber, &exception);
      |                                                                                       ^
/home/mcatanzaro/Projects/WebKit/Source/JavaScriptCore/API/glib/JSCContext.cpp:922:116: warning: function 'strlen' is unsafe [-Wunsafe-buffer-usage-in-libc-call]
  922 |     JSValueRef result = evaluateScriptInContext(objectContext.get(), String::fromUTF8(std::span(code, length < 0 ? strlen(code) : length)), uri, lineNumber, &exception);
      |                                                                                                                    ^~~~~~~~~~~~
/home/mcatanzaro/Projects/WebKit/Source/JavaScriptCore/API/glib/JSCContext.cpp:982:63: warning: the two-parameter std::span construction is unsafe as it can introduce mismatch between buffer size and the bound information [-Wunsafe-buffer-usage-in-container]
  982 |     JSC::SourceCode source = JSC::makeSource(String::fromUTF8(std::span(code, length < 0 ? strlen(code) : length)), JSC::SourceOrigin { sourceURL }, JSC::SourceTaintedOrigin::Untainted,
      |                                                               ^
/home/mcatanzaro/Projects/WebKit/Source/JavaScriptCore/API/glib/JSCContext.cpp:982:92: warning: function 'strlen' is unsafe [-Wunsafe-buffer-usage-in-libc-call]
  982 |     JSC::SourceCode source = JSC::makeSource(String::fromUTF8(std::span(code, length < 0 ? strlen(code) : length)), JSC::SourceOrigin { sourceURL }, JSC::SourceTaintedOrigin::Untainted,
      |                                                                                            ^~~~~~~~~~~~
6 warnings generated.

[Michael Catanzaro]

Pull request: https://github.com/WebKit/WebKit/pull/59901

[EWS]

Committed 308725@main (321a29a77cd5): <https://commits.webkit.org/308725@main>

Reviewed commits have been landed. Closing PR #59901 and removing active labels.