From e35ca417fe81a64985c2b29e863ce418ae75b96e Mon Sep 17 00:00:00 2001 From: Sam James Date: Sat, 26 Nov 2022 13:08:49 +0000 Subject: [PATCH] gh-99086: Fix -Wstrict-prototypes, -Wimplicit-function-declaration warnings in configure.ac (#99406) Follow up to 12078e78f6e4a21f344e4eaff529e1ff3b97734f. --- ...2-11-24-02-58-10.gh-issue-99086.DV_4Br.rst | 1 + configure | 52 ++++++++++--------- configure.ac | 52 ++++++++++--------- 3 files changed, 57 insertions(+), 48 deletions(-) create mode 100644 Misc/NEWS.d/next/Build/2022-11-24-02-58-10.gh-issue-99086.DV_4Br.rst diff --git a/Misc/NEWS.d/next/Build/2022-11-24-02-58-10.gh-issue-99086.DV_4Br.rst b/Misc/NEWS.d/next/Build/2022-11-24-02-58-10.gh-issue-99086.DV_4Br.rst new file mode 100644 index 00000000000000..2dace165ca1ada --- /dev/null +++ b/Misc/NEWS.d/next/Build/2022-11-24-02-58-10.gh-issue-99086.DV_4Br.rst @@ -0,0 +1 @@ +Fix ``-Wimplicit-int``, ``-Wstrict-prototypes``, and ``-Wimplicit-function-declaration`` compiler warnings in :program:`configure` checks. diff --git a/configure b/configure index 047fd94219d5be..3f8daf9dad5fd8 100755 --- a/configure +++ b/configure @@ -6755,7 +6755,7 @@ if test "x$enable_profiling" = xyes; then CC="$CC -pg" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ -int main() { return 0; } +int main(void) { return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : @@ -9220,7 +9220,7 @@ else void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -9275,7 +9275,7 @@ else void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -9324,7 +9324,7 @@ else void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -9373,7 +9373,7 @@ else void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -12233,7 +12233,7 @@ else cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ -int main() +int main(void) { char s[16]; int i, *p1, *p2; @@ -15042,6 +15042,7 @@ $as_echo_n "checking for pthread_create in -lpthread... " >&6; } /* end confdefs.h. */ #include +#include #include void * start_routine (void *arg) { exit (0); } @@ -15352,7 +15353,7 @@ else void *foo(void *parm) { return NULL; } - int main() { + int main(void) { pthread_attr_t attr; pthread_t id; if (pthread_attr_init(&attr)) return (-1); @@ -16954,7 +16955,7 @@ else #include #include -int main(int argc, char*argv[]) +int main(int argc, char *argv[]) { if(chflags(argv[0], 0) != 0) return 1; @@ -17003,7 +17004,7 @@ else #include #include -int main(int argc, char*argv[]) +int main(int argc, char *argv[]) { if(lchflags(argv[0], 0) != 0) return 1; @@ -19711,7 +19712,7 @@ else #include #include -int main() +int main(void) { int passive, gaierr, inet4 = 0, inet6 = 0; struct addrinfo hints, *ai, *aitop; @@ -20908,7 +20909,7 @@ else #include #include -int main() { +int main(void) { volatile double x, y, z; /* 1./(1-2**-53) -> 1+2**-52 (correct), 1.0 (double rounding) */ x = 0.99999999999999989; /* 1-2**-53 */ @@ -21687,7 +21688,7 @@ else cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ -int main() +int main(void) { return (((-1)>>3 == -1) ? 0 : 1); } @@ -22589,7 +22590,7 @@ else #include #include -int main() +int main(void) { int val1 = nice(1); if (val1 != -1 && val1 == nice(2)) @@ -22631,7 +22632,7 @@ else #include #include -int main() +int main(void) { struct pollfd poll_struct = { 42, POLLIN|POLLPRI|POLLOUT, 0 }; int poll_test; @@ -22688,7 +22689,7 @@ else extern char *tzname[]; #endif -int main() +int main(void) { /* Note that we need to ensure that not only does tzset(3) do 'something' with localtime, but it works as documented @@ -24350,9 +24351,10 @@ else cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ +#include #include -#include -int main() { +#include +int main(void) { size_t len = -1; const char *str = "text"; len = mbstowcs(NULL, str, 0); @@ -24552,7 +24554,7 @@ else #include #include void foo(void *p, void *q) { memmove(p, q, 19); } -int main() { +int main(void) { char a[32] = "123456789000000000"; foo(&a[9], a); if (strcmp(a, "123456789123456789000000000") != 0) @@ -24607,7 +24609,7 @@ else ); return r; } - int main() { + int main(void) { int p = 8; if ((foo(&p) ? : p) != 6) return 1; @@ -24650,7 +24652,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext #include atomic_int int_var; atomic_uintptr_t uintptr_var; - int main() { + int main(void) { atomic_store_explicit(&int_var, 5, memory_order_relaxed); atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed); int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst); @@ -24691,7 +24693,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext int val; - int main() { + int main(void) { __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST); (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST); return 0; @@ -24767,7 +24769,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext #include - int main() { + int main(void) { struct dirent entry; return entry.d_type == DT_UNKNOWN; } @@ -24805,11 +24807,12 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ + #include #include #include #include - int main() { + int main(void) { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = GRND_NONBLOCK; @@ -24852,9 +24855,10 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ + #include #include - int main() { + int main(void) { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = 0; diff --git a/configure.ac b/configure.ac index 19f12e8d5402fb..734a4db8389915 100644 --- a/configure.ac +++ b/configure.ac @@ -1427,7 +1427,7 @@ AC_ARG_ENABLE(profiling, if test "x$enable_profiling" = xyes; then ac_save_cc="$CC" CC="$CC -pg" - AC_LINK_IFELSE([AC_LANG_SOURCE([[int main() { return 0; }]])], + AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])], [], [enable_profiling=no]) CC="$ac_save_cc" @@ -2553,7 +2553,7 @@ AC_CACHE_CHECK([whether pthreads are available without options], void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -2586,7 +2586,7 @@ AC_RUN_IFELSE([AC_LANG_SOURCE([[ void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -2613,7 +2613,7 @@ AC_RUN_IFELSE([AC_LANG_SOURCE([[ void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -2640,7 +2640,7 @@ AC_RUN_IFELSE([AC_LANG_SOURCE([[ void* routine(void* p){return NULL;} -int main(){ +int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; @@ -3578,7 +3578,7 @@ esac # check for systems that require aligned memory access AC_CACHE_CHECK([aligned memory access is required], [ac_cv_aligned_required], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ -int main() +int main(void) { char s[16]; int i, *p1, *p2; @@ -4292,6 +4292,7 @@ yes AC_MSG_CHECKING([for pthread_create in -lpthread]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include +#include #include void * start_routine (void *arg) { exit (0); }]], [[ @@ -4361,7 +4362,7 @@ if test "$posix_threads" = "yes"; then void *foo(void *parm) { return NULL; } - int main() { + int main(void) { pthread_attr_t attr; pthread_t id; if (pthread_attr_init(&attr)) return (-1); @@ -4898,7 +4899,7 @@ AC_CACHE_CHECK([for chflags], [ac_cv_have_chflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include -int main(int argc, char*argv[]) +int main(int argc, char *argv[]) { if(chflags(argv[0], 0) != 0) return 1; @@ -4920,7 +4921,7 @@ AC_CACHE_CHECK([for lchflags], [ac_cv_have_lchflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include -int main(int argc, char*argv[]) +int main(int argc, char *argv[]) { if(lchflags(argv[0], 0) != 0) return 1; @@ -5196,7 +5197,7 @@ AS_VAR_IF([ac_cv_func_getaddrinfo], [yes], [ #include #include -int main() +int main(void) { int passive, gaierr, inet4 = 0, inet6 = 0; struct addrinfo hints, *ai, *aitop; @@ -5612,7 +5613,7 @@ CC="$CC $BASECFLAGS" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include -int main() { +int main(void) { volatile double x, y, z; /* 1./(1-2**-53) -> 1+2**-52 (correct), 1.0 (double rounding) */ x = 0.99999999999999989; /* 1-2**-53 */ @@ -5919,7 +5920,7 @@ fi], # or fills with zeros (like the Cray J90, according to Tim Peters). AC_CACHE_CHECK([whether right shift extends the sign bit], [ac_cv_rshift_extends_sign], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ -int main() +int main(void) { return (((-1)>>3 == -1) ? 0 : 1); } @@ -6118,7 +6119,7 @@ AC_CACHE_CHECK([for broken nice()], [ac_cv_broken_nice], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include -int main() +int main(void) { int val1 = nice(1); if (val1 != -1 && val1 == nice(2)) @@ -6140,7 +6141,7 @@ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include -int main() +int main(void) { struct pollfd poll_struct = { 42, POLLIN|POLLPRI|POLLOUT, 0 }; int poll_test; @@ -6176,7 +6177,7 @@ AC_RUN_IFELSE([AC_LANG_SOURCE([[ extern char *tzname[]; #endif -int main() +int main(void) { /* Note that we need to ensure that not only does tzset(3) do 'something' with localtime, but it works as documented @@ -6517,9 +6518,10 @@ AC_CHECK_TYPE(socklen_t,, AC_CACHE_CHECK([for broken mbstowcs], [ac_cv_broken_mbstowcs], AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include #include -#include -int main() { +#include +int main(void) { size_t len = -1; const char *str = "text"; len = mbstowcs(NULL, str, 0); @@ -6646,7 +6648,7 @@ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void foo(void *p, void *q) { memmove(p, q, 19); } -int main() { +int main(void) { char a[32] = "123456789000000000"; foo(&a[9], a); if (strcmp(a, "123456789123456789000000000") != 0) @@ -6687,7 +6689,7 @@ if test "$ac_cv_gcc_asm_for_x87" = yes; then ); return r; } - int main() { + int main(void) { int p = 8; if ((foo(&p) ? : p) != 6) return 1; @@ -6715,7 +6717,7 @@ AC_LINK_IFELSE( #include atomic_int int_var; atomic_uintptr_t uintptr_var; - int main() { + int main(void) { atomic_store_explicit(&int_var, 5, memory_order_relaxed); atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed); int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst); @@ -6736,7 +6738,7 @@ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ int val; - int main() { + int main(void) { __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST); (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST); return 0; @@ -6777,7 +6779,7 @@ AC_LINK_IFELSE( AC_LANG_SOURCE([[ #include - int main() { + int main(void) { struct dirent entry; return entry.d_type == DT_UNKNOWN; } @@ -6795,11 +6797,12 @@ AC_CACHE_CHECK([for the Linux getrandom() syscall], [ac_cv_getrandom_syscall], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ + #include #include #include #include - int main() { + int main(void) { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = GRND_NONBLOCK; @@ -6822,9 +6825,10 @@ AC_CACHE_CHECK([for the getrandom() function], [ac_cv_func_getrandom], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ + #include #include - int main() { + int main(void) { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = 0;