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From: Florian Weimer <fw@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-3363] libsanitizer: Avoid implicit function declaration in configure test Date: Tue, 18 Oct 2022 14:59:15 +0000 (GMT) [thread overview] Message-ID: <20221018145915.B84AD3857B9B@sourceware.org> (raw) https://gcc.gnu.org/g:6be2672e4ee41c566a9e072088cccca263bab5f7 commit r13-3363-g6be2672e4ee41c566a9e072088cccca263bab5f7 Author: Florian Weimer <fweimer@redhat.com> Date: Tue Oct 18 16:58:48 2022 +0200 libsanitizer: Avoid implicit function declaration in configure test libsanitizer/ * configure.ac (sanitizer_supported): Include <unistd.h> for syscall prototype. * configure: Regenerate. Diff: --- libsanitizer/configure | 5 +++-- libsanitizer/configure.ac | 3 ++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/libsanitizer/configure b/libsanitizer/configure index 3a0c47513e7..cb99faf6100 100755 --- a/libsanitizer/configure +++ b/libsanitizer/configure @@ -12383,7 +12383,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 12386 "configure" +#line 12398 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -12489,7 +12489,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 12492 "configure" +#line 12504 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -16072,6 +16072,7 @@ case "$target" in cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include <sys/syscall.h> +#include <unistd.h> int main () { diff --git a/libsanitizer/configure.ac b/libsanitizer/configure.ac index 7f1ef3979c4..ad49f29db7e 100644 --- a/libsanitizer/configure.ac +++ b/libsanitizer/configure.ac @@ -161,7 +161,8 @@ case "$target" in *-*-linux*) # Some old Linux distributions miss required syscalls. sanitizer_supported=no - AC_TRY_COMPILE([#include <sys/syscall.h>],[ + AC_TRY_COMPILE([#include <sys/syscall.h> +#include <unistd.h>],[ syscall (__NR_gettid); syscall (__NR_futex); syscall (__NR_exit_group);
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