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Port AC_C_BIGENDIAN to recent clang

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Problem and trivial patch reported by Matthieu Gautier in:
https://lists.gnu.org/r/bug-autoconf/2019-05/msg00006.html
* lib/autoconf/c.m4 (AC_C_BIGENDIAN): Use unsigned short for
values greater than 2**15 - 1.
This commit is contained in:
Paul Eggert 2019-05-29 13:00:26 -07:00
parent b8fd7ae756
commit 4677fc349c
1 changed files with 4 additions and 4 deletions
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8
lib/autoconf/c.m4
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@ -1648,16 +1648,16 @@ AC_DEFUN([AC_C_BIGENDIAN],
[# Try to guess by grepping values from an object file.
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[short int ascii_mm[] =
[[unsigned short int ascii_mm[] =
{ 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
short int ascii_ii[] =
unsigned short int ascii_ii[] =
{ 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
int use_ascii (int i) {
return ascii_mm[i] + ascii_ii[i];
}
short int ebcdic_ii[] =
unsigned short int ebcdic_ii[] =
{ 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
short int ebcdic_mm[] =
unsigned short int ebcdic_mm[] =
{ 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
int use_ebcdic (int i) {
return ebcdic_mm[i] + ebcdic_ii[i];