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-rw-r--r--intl/localealias.c24
1 files changed, 21 insertions, 3 deletions
diff --git a/intl/localealias.c b/intl/localealias.c
index 381264ba03..122b5807f9 100644
--- a/intl/localealias.c
+++ b/intl/localealias.c
@@ -30,6 +30,9 @@
 
 #include <ctype.h>
 #include <stdio.h>
+#if defined _LIBC || defined HAVE___FSETLOCKING
+# include <stdio_ext.h>
+#endif
 #include <sys/types.h>
 
 #ifdef __GNUC__
@@ -88,6 +91,7 @@ void free ();
 #  define mempcpy __mempcpy
 # endif
 # define HAVE_MEMPCPY	1
+# define HAVE___FSETLOCKING	1
 
 /* We need locking here since we can be called from different places.  */
 # include <bits/libc-lock.h>
@@ -99,6 +103,15 @@ __libc_lock_define_initialized (static, lock);
 # define internal_function
 #endif
 
+/* Some optimizations for glibc.  */
+#ifdef _LIBC
+# define FEOF(fp)		feof_unlocked (fp)
+# define FGETS(buf, n, fp)	fgets_unlocked (buf, n, fp)
+#else
+# define FEOF(fp)		feof (fp)
+# define FGETS(buf, n, fp)	fgets (buf, n, fp)
+#endif
+
 /* For those losing systems which don't have `alloca' we have to add
    some additional code emulating it.  */
 #ifdef HAVE_ALLOCA
@@ -228,8 +241,13 @@ read_alias_file (fname, fname_len)
   if (fp == NULL)
     return 0;
 
+#ifdef HAVE___FSETLOCKING
+  /* No threads present.  */
+  __fsetlocking (fp, FSETLOCKING_BYCALLER);
+#endif
+
   added = 0;
-  while (!feof (fp))
+  while (!FEOF (fp))
     {
       /* It is a reasonable approach to use a fix buffer here because
 	 a) we are only interested in the first two fields
@@ -241,7 +259,7 @@ read_alias_file (fname, fname_len)
       char *value;
       char *cp;
 
-      if (fgets (buf, sizeof buf, fp) == NULL)
+      if (FGETS (buf, sizeof buf, fp) == NULL)
 	/* EOF reached.  */
 	break;
 
@@ -251,7 +269,7 @@ read_alias_file (fname, fname_len)
 	{
 	  char altbuf[BUFSIZ];
 	  do
-	    if (fgets (altbuf, sizeof altbuf, fp) == NULL)
+	    if (FGETS (altbuf, sizeof altbuf, fp) == NULL)
 	      /* Make sure the inner loop will be left.  The outer loop
 		 will exit at the `feof' test.  */
 	      break;