--- a/src/java.base/share/native/libjli/args.c	Fri Jun 08 16:33:40 2018 +0100
+++ b/src/java.base/share/native/libjli/args.c	Fri Jun 08 21:06:54 2018 +0530
@@ -305,6 +305,8 @@
 
     ctx.state = FIND_NEXT;
     ctx.parts = JLI_List_new(4);
+    // initialize to avoid -Werror=maybe-uninitialized issues from gcc 7.3 onwards.
+    ctx.quote_char = '"';
 
     /* arbitrarily pick 8, seems to be a reasonable number of arguments */
     rv = JLI_List_new(8);