[BZ #789]

2005-03-15  Jakub Jelinek  <jakub@redhat.com>
	[BZ #789]
	* sysdeps/i386/i686/hp-timing.h (HP_TIMING_ACCUM): Fix asm constraints.
	Remove memory clobber.

	* sysdeps/x86_64/hp-timing.h (HP_TIMING_ACCUM): Make the addition
	thread-safe.  Subtract GLRO(dl_hp_timing_overhead) from Diff.

1 files changed, 15 insertions, 3 deletions

diff --git a/libidn/iconvme.c b/libidn/iconvme.c
index daf0c8e349..cc4dd1daa5 100644
--- a/libidn/iconvme.c
+++ b/libidn/iconvme.c
@@ -41,10 +41,14 @@
 #if HAVE_ICONV
 /* Get iconv etc. */
 # include <iconv.h>
-/* Get MB_LEN_MAX. */
+/* Get MB_LEN_MAX, CHAR_BIT.  */
 # include <limits.h>
 #endif
 
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
+
 /* Convert a zero-terminated string STR from the FROM_CODSET code set
    to the TO_CODESET code set.  The returned string is allocated using
    malloc, and must be dellocated by the caller using free.  On
@@ -63,10 +67,18 @@ iconv_string (const char *str, const char *from_codeset,
   char *p = (char *) str;
   size_t inbytes_remaining = strlen (p);
   /* Guess the maximum length the output string can have.  */
-  size_t outbuf_size = (inbytes_remaining + 1) * MB_LEN_MAX;
-  size_t outbytes_remaining = outbuf_size - 1; /* -1 for NUL */
+  size_t outbuf_size = inbytes_remaining + 1;
+  size_t outbytes_remaining;
   size_t err;
   int have_error = 0;
+
+  /* Use a worst-case output size guess, so long as that wouldn't be
+     too large for comfort.  It's OK if the guess is wrong so long as
+     it's nonzero.  */
+  size_t approx_sqrt_SIZE_MAX = SIZE_MAX >> (sizeof (size_t) * CHAR_BIT / 2);
+  if (outbuf_size <= approx_sqrt_SIZE_MAX / MB_LEN_MAX)
+    outbuf_size *= MB_LEN_MAX;
+  outbytes_remaining = outbuf_size - 1;
 #endif
 
   if (strcmp (to_codeset, from_codeset) == 0)