diff options
| -rw-r--r-- | acinclude.m4 | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 02a11973c..b3035600b 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -438,12 +438,14 @@ if test "$mpfr_cv_nanisnan" = "yes"; then AC_MSG_WARN([platform and/or document the behavior.]) fi -dnl Check if the chars '0' to '9' are consecutive values +dnl Check if the chars '0' to '9', 'a' to 'z', and 'A' to 'Z' are +dnl consecutive values. +dnl The const is necessary with GCC's "-Wwrite-strings -Werror". AC_MSG_CHECKING([if charset has consecutive values]) AC_RUN_IFELSE([AC_LANG_PROGRAM([[ -char *number = "0123456789"; -char *lower = "abcdefghijklmnopqrstuvwxyz"; -char *upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; +const char *number = "0123456789"; +const char *lower = "abcdefghijklmnopqrstuvwxyz"; +const char *upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; ]],[[ int i; unsigned char *p; |