From 8afd99d671f0aeb4ba8caa2d368b99806ecace6a Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 5 Nov 2004 16:01:53 +0000
Subject: * string.c (rb_str_locktmp): check STR_TMPLOCK flag before   locking.
  [ruby-dev:24727]

* gc.c (gc_mark): stricter GC stack check.

* string.c (str_gsub): should have removed rb_str_unlocktmp(str).
  [ruby-dev:24708]

* string.c (str_gsub): string modify check no longer based on
  tmplock.  [ruby-dev:24706]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@7216 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 string.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

(limited to 'string.c')

diff --git a/string.c b/string.c
index 48cd779a02..12f0474495 100644
--- a/string.c
+++ b/string.c
@@ -464,7 +464,6 @@ str_independent(str)
     VALUE str;
 {
     if (FL_TEST(str, STR_TMPLOCK)) {
-	FL_UNSET(str, STR_TMPLOCK);
 	rb_raise(rb_eRuntimeError, "can't modify string; temporarily locked");
     }
     if (OBJ_FROZEN(str)) rb_error_frozen("string");
@@ -641,6 +640,9 @@ VALUE
 rb_str_locktmp(str)
     VALUE str;
 {
+    if (FL_TEST(str, STR_TMPLOCK)) {
+	rb_raise(rb_eRuntimeError, "temporal locking already locked string");
+    }
     FL_SET(str, STR_TMPLOCK);
     return str;
 }
@@ -649,6 +651,9 @@ VALUE
 rb_str_unlocktmp(str)
     VALUE str;
 {
+    if (!FL_TEST(str, STR_TMPLOCK)) {
+	rb_raise(rb_eRuntimeError, "temporal unlocking already unlocked string");
+    }
     FL_UNSET(str, STR_TMPLOCK);
     return str;
 }
@@ -2034,9 +2039,9 @@ str_gsub(argc, argv, str, bang)
     VALUE pat, val, repl, match, dest;
     struct re_registers *regs;
     long beg, n;
-    long offset, blen, len;
+    long offset, blen, slen, len;
     int iter = 0;
-    char *buf, *bp, *cp;
+    char *buf, *bp, *sp, *cp;
     int tainted = 0;
 
     if (argc == 1 && rb_block_given_p()) {
@@ -2063,9 +2068,9 @@ str_gsub(argc, argv, str, bang)
     dest = rb_str_new5(str, 0, blen);
     buf = RSTRING(dest)->ptr;
     bp = buf;
-    cp = RSTRING(str)->ptr;
+    sp = cp = RSTRING(str)->ptr;
+    slen = RSTRING(str)->len;
 
-    rb_str_locktmp(str);
     rb_str_locktmp(dest);
     while (beg >= 0) {
 	n++;
@@ -2074,7 +2079,7 @@ str_gsub(argc, argv, str, bang)
 	if (iter) {
 	    rb_match_busy(match);
 	    val = rb_obj_as_string(rb_yield(rb_reg_nth_match(0, match)));
-	    str_mod_check(dest, buf, blen);
+	    str_mod_check(str, sp, slen);
 	    rb_backref_set(match);
 	}
 	else {
@@ -2124,7 +2129,6 @@ str_gsub(argc, argv, str, bang)
     }
     rb_backref_set(match);
     *bp = '\0';
-    rb_str_unlocktmp(str);
     rb_str_unlocktmp(dest);
     if (bang) {
 	if (str_independent(str)) {
-- 
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