prefer rb_syserr_fail

* file.c, io.c, util.c: prefer rb_syserr_fail with saved errno over setting errno then call rb_sys_fail, not to be clobbered potentially and to reduce thread local errno accesses. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53264 b2dd03c8-39d4-4d8f-98ff-823fe69b080e 

1 files changed, 5 insertions, 3 deletions

diff --git a/util.c b/util.c
index 89dec0d19b..95ac2b09b5 100644
--- a/util.c
+++ b/util.c
@@ -507,9 +507,10 @@ ruby_getcwd(void)
 char *buf = xmalloc(size);

 while (!getcwd(buf, size)) {
- if (errno != ERANGE) {
+ int e = errno;
+ if (e != ERANGE) {
 xfree(buf);
- rb_sys_fail("getcwd");
+ rb_syserr_fail(e, "getcwd");
 }
 size *= 2;
 buf = xrealloc(buf, size);
@@ -527,8 +528,9 @@ ruby_getcwd(void)
 char *buf = xmalloc(PATH_MAX+1);

 if (!getwd(buf)) {
+ int e = errno;
 xfree(buf);
- rb_sys_fail("getwd");
+ rb_syserr_fail(e, "getwd");
 }
 #endif
 return buf;