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patch 8.2.5061: C89 requires signal handlers to return void

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Problem:    C89 requires signal handlers to return void.
Solution:   Drop RETSIGTYPE and hard-code a void return value.
This commit is contained in:
Bram Moolenaar
2022-06-05 22:05:19 +01:00
parent de1d734379
commit 99c48fe997
10 changed files with 49 additions and 129 deletions
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11
src/configure.ac
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@@ -3644,17 +3644,6 @@ fi
dnl Checks for library functions. ===================================
dnl TODO: this generates an obsolete warning, would need to remove and replace
dnl all RETSIGTYPE with "void" and SIGRETURN with "return".
AC_TYPE_SIGNAL
dnl find out what to use at the end of a signal function
if test $ac_cv_type_signal = void; then
AC_DEFINE(SIGRETURN, [return])
else
AC_DEFINE(SIGRETURN, [return 0])
fi
dnl check if struct sigcontext is defined (used for SGI only)
AC_MSG_CHECKING(for struct sigcontext)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([