Following the glibc commit glibc-2.38~298 ("Mark various cold functions
as __COLD"), GNU grep build with -flto flag triggers a GCC warning:sigsegv.c: In function ‘stackoverflow_deinstall_handler.part.0’: sigsegv.c:1441:1: error: function might be candidate for attribute ‘cold’ [-Werror=suggest-attribute=cold] * configure.ac (GNULIB_WARN_CFLAGS): Suppress -Wsuggest-attribute=cold. Tiny-change: yes --- configure.ac | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/configure.ac b/configure.ac index 844a259bd..b793cabde 100644 --- a/configure.ac +++ b/configure.ac @@ -159,6 +159,11 @@ if test $gl_gcc_warnings != no; then # Remove the following and save the result in GNULIB_WARN_CFLAGS. nw= nw="$nw -Wunused-macros" + + # To prevent warnings in sigsegv.c if the perror function + # has "cold" attribute. + nw="$nw -Wsuggest-attribute=cold" + gl_WARN_ADD([-Wno-format-nonliteral]) gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw]) AC_SUBST([GNULIB_WARN_CFLAGS]) -- glebfm
