[Asan] Loose call stack CHECK conditions

[hauhsu]

Summary

These test cases are checking specific functions in call stacks.
But if the call stack order is changed (e.g. another function is not inlined),
the frame number would be different.
This patch loose the frame number checks for those conditions.

Depends on D139827

compiler-rt/test/asan/TestCases/Linux/syscalls.cpp

 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
 
 #include <assert.h>
 #include <errno.h>
 #include <glob.h>
 #include <stdio.h>
 #include <string.h>
 
 #include <sanitizer/linux_syscall_hooks.h>
 
 /* Test the presence of __sanitizer_syscall_ in the tool runtime, and general
    sanity of their behaviour. */
 
 int main(int argc, char *argv[]) {
   char buf[1000];
   __sanitizer_syscall_pre_recvmsg(0, buf - 1, 0);
   // CHECK: AddressSanitizer: stack-buffer-{{.*}}erflow
   // CHECK: READ of size {{.*}} at {{.*}} thread T0
-  // CHECK: #0 {{.*}} in __sanitizer_syscall{{.*}}recvmsg
+  // CHECK: {{#[0-9]+ .*}} in __sanitizer_syscall{{.*}}recvmsg
   return 0;
 }

compiler-rt/test/asan/TestCases/Posix/bcmp_test.cpp

 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
 
 // REQUIRES: compiler-rt-optimized, (linux && !android) || openbsd || freebsd || netbsd 
 // XFAIL: darwin
 
 #include <string.h>
 int main(int argc, char **argv) {
   char a1[] = {static_cast<char>(argc), 2, 3, 4};
   char a2[] = {1, static_cast<char>(2 * argc), 3, 4};
   int res = bcmp(a1, a2, 4 + argc); // BOOM
   // CHECK: AddressSanitizer: stack-buffer-overflow
-  // CHECK: {{#1.*bcmp}}
-  // CHECK: {{#2.*main}}
+  // CHECK: {{#[0-9]+ .*bcmp}}
+  // CHECK: {{#[0-9]+ .*main}}
   return res;
 }

compiler-rt/test/asan/TestCases/memcmp_test.cpp

 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
 
 // REQUIRES: compiler-rt-optimized
 
 #include <string.h>
 int main(int argc, char **argv) {
   char a1[] = {static_cast<char>(argc), 2, 3, 4};
   char a2[] = {1, static_cast<char>(2*argc), 3, 4};
   int res = memcmp(a1, a2, 4 + argc);  // BOOM
   // CHECK: AddressSanitizer: stack-buffer-overflow
-  // CHECK: {{#1.*memcmp}}
-  // CHECK: {{#2.*main}}
+  // CHECK: {{#[0-9]+ .*memcmp}}
+  // CHECK: {{#[0-9]+ .*main}}
   return res;
 }