Merge commit 'origin/master' into pr6429-comp-unwindsyms

* commit 'origin/master':
  Fix assignment optimization expected results.
  PR6538: more testsuite tweaks for read-only warnings
  PR6538: more tapset fixes
  PR6538: explain why absentstats.stp logs will contain warnings
  PR6538: fix treatment of initialized globals
  Use pointer_arg to fetch arguments for syscall.utime and compat_utime.
  Optimize compound and binary expression assignments.
  Check new (sub) functions of _struct_utimbuf_* and _struct_compat_utimbuf_*.
  PR6538: tapset changes
  PR6538: testsuite changes
  PR5001: fix test suite collateral damage
  PR6538: warn about read-only variables
  Add some scripts and descriptions to the systemtap.examples.
  PR5001: Remove _stp_ctime and always use ctime.
  Use tr1/unordered_map instead of the deprecated ext/hash_map.
  PR6524: ctime() on bad values hangs system.
  Optimize away assignments in other contexts.
  Optimize away assignments in other contexts.
  dummy commit for testing systemtap-cvs notification
  Remove sa_restorer initialization.

1 files changed, 45 insertions, 0 deletions

diff --git a/testsuite/systemtap.base/optim_arridx.stp b/testsuite/systemtap.base/optim_arridx.stp
new file mode 100644
index 00000000..20710c7f
--- /dev/null
+++ b/testsuite/systemtap.base/optim_arridx.stp
@@ -0,0 +1,45 @@
+global arr1, arr2, arr3, elide_idx1, elide_global_a, elide_global_b
+
+function fna(a:long) {return a}
+function fnb(a:long, b:long) {return a+b}
+
+probe begin {
+  // array indices
+  arr2[elide_idx1 = 1] = 10
+  arr2[idx2 = 2] = 20
+  arr2[elide_i=3] = 30
+  arr2[j=4] = 40
+  arr1[fna(k = 0), k] = 1
+  arr1[b = 1, b] = 2
+  arr1[elide_c = 2,2] = 3
+  fnb(arr3[0] = 4, arr3[0])
+  m = 1
+  for (elide_n=2; m <= 10; m++)
+    arr2[m] = m * 10
+  printf ("%d %d %d %d\n", arr1[0], arr2[0,0], idx2, j)
+  
+  // function args
+  aa = fna(elide_aa = 1)
+  bb = fnb(cc = 1, elide_global_a = 2)
+
+  // loop
+  for (elide_bb = 1; bb < 10; bb++)
+     cc += bb
+  for (dd = 1; dd < 10; elide_ee = 1)
+     dd += 1
+
+  // conditional
+  if (elide_ff = 0)
+     elide_ff = 1
+  if (elide_global_b = 1)
+     ee = 1
+
+  // compound assignment
+  cc = elide_gg=dd=5
+
+  // binary expression
+  cc = ((elide_hh = 4) + (cc = 1))
+
+  printf("%d %d %d %d %d", aa, bb, cc, dd, ee)
+  exit ()
+}