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authorMatthias Clasen <mclasen@redhat.com>2022-06-23 09:31:06 -0400
committerMatthias Clasen <mclasen@redhat.com>2022-06-23 13:12:51 -0400
commite5b62c8c27599699fa583a18e5346138799d9f50 (patch)
tree60dc24aa32d0b3baa87c9f77ec1e06fa8164cd2f /pango/pango-context.c
parent6486619c1852021e204bda6cd79756a1aa8d7a9d (diff)
downloadpango-e5b62c8c27599699fa583a18e5346138799d9f50.tar.gz
Add a check for mixed linkageprevent-mixed-linkage
Having both pango 1.x and pango 2 linked into the same process will cause trouble, because the type and function names conflict. Error out if we detect this situation.
Diffstat (limited to 'pango/pango-context.c')
-rw-r--r--pango/pango-context.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/pango/pango-context.c b/pango/pango-context.c
index d5e73cfe..a7444865 100644
--- a/pango/pango-context.c
+++ b/pango/pango-context.c
@@ -23,6 +23,8 @@
#include <string.h>
#include <stdlib.h>
+#include <gio/gio.h>
+
#include "pango-context.h"
#include "pango-context-private.h"
#include "pango-impl-utils.h"
@@ -80,11 +82,33 @@ pango_context_init (PangoContext *context)
pango_font_description_set_size (context->font_desc, 12 * PANGO_SCALE);
}
+static gboolean
+pango_has_mixed_deps (void)
+{
+ GModule *module;
+ gpointer func;
+ gboolean result = FALSE;
+
+ module = g_module_open (NULL, 0);
+
+ if (g_module_symbol (module, "pango_hb_font_new", &func))
+ result = TRUE;
+
+ g_module_close (module);
+
+ return result;
+}
+
static void
pango_context_class_init (PangoContextClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ /* Put the check for mixed linkage here, for lack of a better place */
+ if (pango_has_mixed_deps ())
+ g_error ("Pango 2 symbols detected.\n"
+ "Using Pango 1.x and 2 in the same process is not supported.");
+
object_class->finalize = pango_context_finalize;
}