From 9da6b8dfdd14e2afe66ffeed86e5456469b1fb19 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 10 Feb 2018 01:23:47 +0000
Subject: [PATCH] mjit.c: chomp suffix first

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62339 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 mjit.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/mjit.c b/mjit.c
index fa12a3f7d6..3755bd32cd 100644
--- a/mjit.c
+++ b/mjit.c
@@ -786,16 +786,21 @@ convert_unit_to_func(struct rb_mjit_unit *unit)
     /* -include-pch is used for Clang */
     if (mjit_opts.cc == MJIT_CC_GCC) {
         const char *s = pch_file;
+        const char *e = s + strlen(s);
+        static const char suffix[] = ".gch";
+
         fprintf(f, "#include \"");
+        /* chomp .gch suffix */
+        if (e > s+sizeof(suffix)-1 && strcmp(e-sizeof(suffix)+1, suffix) == 0) {
+            e -= sizeof(suffix)-1;
+        }
         /* print pch_file except .gch */
-        for (; strcmp(s, ".gch") != 0; s++) {
+        for (; s < e; s++) {
             switch(*s) {
-              case '\\':
-                fprintf(f, "\\%c", *s);
-                break;
-              default:
-                fprintf(f, "%c", *s);
+              case '\\': case '"':
+                fputc('\\', f);
             }
+            fputc(*s, f);
         }
         fprintf(f, "\"\n");
     }