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| author | Paul Eggert <eggert@cs.ucla.edu> | 2022-06-28 17:10:53 -0500 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2022-06-28 18:27:40 -0500 |
| commit | 6e3282fe3893a42eb9c5cc4eba5387a3be4e8d10 (patch) | |
| tree | 92d77f76d9ef8d3cd849bd261d7a21f6544b7426 | |
| parent | 68fac90c09a4a77d9aad730b5939438294c68a43 (diff) | |
| download | autoconf-6e3282fe3893a42eb9c5cc4eba5387a3be4e8d10.tar.gz | |
Refactor recent AC_FUNC_ALLOCA fix
* lib/autoconf/functions.m4 (AC_FUNC_ALLOCA): Simplify and use
AS_IF. Had I done it this way originally I would have avoided the
bug that Jim just fixed.
| -rw-r--r-- | lib/autoconf/functions.m4 | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/lib/autoconf/functions.m4 b/lib/autoconf/functions.m4 index 51aeb0b9..70eb8760 100644 --- a/lib/autoconf/functions.m4 +++ b/lib/autoconf/functions.m4 @@ -426,10 +426,9 @@ if test $ac_cv_working_alloca_h = yes; then fi AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works, -[if test $ac_cv_working_alloca_h = yes; then - ac_cv_func_alloca_works=yes -else - AC_LINK_IFELSE([AC_LANG_PROGRAM( +[ac_cv_func_alloca_works=$ac_cv_working_alloca_h +AS_IF([test "$ac_cv_func_alloca_works" != yes], + [AC_LINK_IFELSE([AC_LANG_PROGRAM( [[#include <stdlib.h> #include <stddef.h> #ifndef alloca @@ -447,11 +446,7 @@ void *alloca (size_t); #endif ]], [[char *p = (char *) alloca (1); if (p) return 0;]])], - [ac_cv_func_alloca_works=yes], - [ac_cv_func_alloca_works=no] - ) -fi -]) + [ac_cv_func_alloca_works=yes])])]) if test $ac_cv_func_alloca_works = yes; then AC_DEFINE(HAVE_ALLOCA, 1, |