https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70520
Bug ID: 70520
Summary: Incorrect child stack alignment in
c-c++-common/asan/clone-test-1.c
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
c-c++-common/asan/clone-test-1.c has
int main(int argc, char **argv) {
int i;
const int kStackSize = 1 << 20;
char child_stack[kStackSize + 1];
char *sp = child_stack + kStackSize; /* Stack grows down. */
printf("Parent: %p\n", sp);
pid_t clone_pid = clone(Child, sp, CLONE_FILES | CLONE_VM, NULL, 0, 0, 0);
There is no guarantee that "sp" will be aligned at 16 bytes, which
is required by x86 psABIs.
