(x)memcoll: speedup when input is known to be NUL delimited

[pspp] / m4 / strtod.m4

diff --git a/m4/strtod.m4 b/m4/strtod.m4
index 36b5d2dd8acc762071c7df8ab6eed989bd78c09f..aa6a1c53d50bdee99bcc6d47c625c410b1757c5d 100644 (file)
--- a/m4/strtod.m4
+++ b/m4/strtod.m4
@@ -95,7 +95,19 @@ numeric_equal (double x, double y)
 ]])],
         [gl_cv_func_strtod_works=yes],
         [gl_cv_func_strtod_works=no],
-        [gl_cv_func_strtod_works="guessing no"])])
+        [dnl The last known bugs in glibc strtod(), as of this writing,
+        dnl were fixed in version 2.8
+         AC_EGREP_CPP([Lucky user],
+           [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8) || (__GLIBC__ > 2)
+  Lucky user
+ #endif
+#endif
+           ],
+           [gl_cv_func_strtod_works=yes],
+           [gl_cv_func_strtod_works="guessing no"])])])
     if test "$gl_cv_func_strtod_works" != yes; then
       REPLACE_STRTOD=1
     fi