1 file changed, 7 insertions, 2 deletions
diff --git a/source/filter.c b/source/filter.c
index 3ffd077..5f96cc0 100644
--- a/source/filter.c
+++ b/source/filter.c
@@ -150,9 +150,14 @@ static struct cgit_filter *current_write_filter = NULL;
 
 void cgit_init_filters(void)
 {
-	libc_write = dlsym(RTLD_NEXT, "write");
-	if (!libc_write)
+	void *symbol = dlsym(RTLD_NEXT, "write");
+
+	if (!symbol)
 		die("Unable to find libc's write function");
+	// ISO C cannot convert an object pointer to a function pointer, while
+	// POSIX guarantees the two share a representation, so the bytes are
+	// copied across instead.
+	memcpy(&libc_write, &symbol, sizeof(libc_write));
 }
 
 /*