app-emulation/virtualbox: fix building with dev-libs/libxml2-2.12

Closes: https://bugs.gentoo.org/922445
Signed-off-by: Viorel Munteanu <ceamac@gentoo.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/app-emulation/virtualbox/files/virtualbox-7.0.14-libxml2-2.12.patch b/app-emulation/virtualbox/files/virtualbox-7.0.14-libxml2-2.12.patch
new file mode 100644
index 000000000000..a523bad41a30
--- /dev/null
+++ b/app-emulation/virtualbox/files/virtualbox-7.0.14-libxml2-2.12.patch
@@ -0,0 +1,43 @@
+Bug: https://bugs.gentoo.org/922445
+
+The change in libxml2 is not backwards compatibe.
+A patch like the one in arch does not work with 2.11, so just cast the argument to maintain compatibility with both.
+
+The upstream change is in include/libxml/xmlerror.h:
+
+ typedef xmlError *xmlErrorPtr;
+
+-typedef void (*xmlStructuredErrorFunc) (void *userData, xmlErrorPtr error);
++typedef void (*xmlStructuredErrorFunc) (void *userData, const xmlError *error);
+
+See also: https://gitlab.archlinux.org/archlinux/packaging/packages/virtualbox/-/blob/main/019-libxml-2-12.patch?ref_type=heads
+
+--- a/src/VBox/Runtime/r3/xml.cpp
++++ b/src/VBox/Runtime/r3/xml.cpp
+@@ -1870,7 +1870,7 @@
+         throw std::bad_alloc();
+     /* per-thread so it must be here */
+     xmlSetGenericErrorFunc(NULL, xmlParserBaseGenericError);
+-    xmlSetStructuredErrorFunc(NULL, xmlParserBaseStructuredError);
++    xmlSetStructuredErrorFunc(NULL, (xmlStructuredErrorFunc)xmlParserBaseStructuredError);
+ }
+ 
+ XmlParserBase::~XmlParserBase()
+@@ -1931,7 +1931,7 @@
+                                                   pcszFilename,
+                                                   NULL,       // encoding = auto
+                                                   options)))
+-        throw XmlError(xmlCtxtGetLastError(m_ctxt));
++        throw XmlError((xmlErrorPtr)xmlCtxtGetLastError(m_ctxt));
+ 
+     doc.refreshInternals();
+ }
+@@ -2191,7 +2191,7 @@
+                                               pcszFilename,
+                                               NULL,       // encoding = auto
+                                               options)))
+-        throw XmlError(xmlCtxtGetLastError(m_ctxt));
++        throw XmlError((xmlErrorPtr)xmlCtxtGetLastError(m_ctxt));
+ 
+     doc.refreshInternals();
+ }