Change the debugger attachment code to send the STOP signal to the

forked process before using ptrace() to continue it, instead of asking
ptrace to deliver it, as that doesn't seem to work on some versions
of linux.

CCMAIL: 77824-done@bugs.kde.org

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2380

diff --git a/coregrind/vg_main.c b/coregrind/vg_main.c
index 5ffca110a241adc73a816fba7cef29aadc878253..9da5b98d279109955ea5e582b58aa5824959b54d 100644 (file)
--- a/coregrind/vg_main.c
+++ b/coregrind/vg_main.c
@@ -350,7 +350,8 @@ void VG_(start_debugger) ( Int tid )
       if ((res = VG_(waitpid)(pid, &status, 0)) == pid &&
           WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP &&
           ptrace(PTRACE_SETREGS, pid, NULL, &regs) == 0 &&
-          ptrace(PTRACE_DETACH, pid, NULL, SIGSTOP) == 0) {
+          kill(pid, SIGSTOP) == 0 &&
+          ptrace(PTRACE_DETACH, pid, NULL, 0) == 0) {
          Char pidbuf[15];
          Char file[30];
          Char buf[100];