[spec/builtin-printf] Specify that integer overflow is an error

Also check for overflow in 'trap'.

It's already done to an extent in 'ulimit'.

This is part of #2107.

builtin/trap_osh.py

@@ -160,8 +160,12 @@ def _IsUnsignedInteger(s):
 
     # Note: could simplify this by making match.LooksLikeUnsigned()
 
+    ok, big_int = mops.FromStr2(s)
+    if not ok:
+        raise error.Usage('integer too big: %s' % s, loc.Missing)
+
     # not (0 > s) is (s >= 0)
-    return not mops.Greater(mops.ZERO, mops.FromStr(s))
+    return not mops.Greater(mops.ZERO, big_int)
 
 
 def _GetSignalNumber(sig_spec):

spec/builtin-printf.test.sh

@@ -1,4 +1,4 @@
-## oils_failures_allowed: 2
+## oils_failures_allowed: 0
 ## compare_shells: dash bash mksh zsh ash
 
 # printf
@@ -1121,9 +1121,12 @@ for fmt in '%u\n' '%d\n'; do
   printf "$fmt" '18446744073709551616'
   echo
 done
+
+## status: 1
 ## STDOUT:
 ## END
 
+## OK bash/dash/mksh status: 0
 ## OK bash/dash/mksh STDOUT:
 18446744073709551615
 18446744073709551615
@@ -1133,6 +1136,7 @@ done
 
 ## END
 
+## BUG ash status: 0
 ## BUG ash STDOUT:
 18446744073709551615
 0
@@ -1142,6 +1146,7 @@ done
 
 ## END
 
+## BUG zsh status: 0
 ## BUG zsh STDOUT:
 1844674407370955161
 1844674407370955161
@@ -1165,9 +1170,12 @@ for fmt in '%u\n' '%d\n'; do
   printf "$fmt" '-18446744073709551616'
   echo
 done
+
+## status: 1
 ## STDOUT:
 ## END
 
+## OK bash/dash/mksh status: 0
 ## OK bash/dash/mksh STDOUT:
 1
 18446744073709551615
@@ -1177,6 +1185,7 @@ done
 
 ## END
 
+## BUG zsh status: 0
 ## BUG zsh STDOUT:
 16602069666338596455
 16602069666338596455
@@ -1186,6 +1195,7 @@ done
 
 ## END
 
+## BUG ash status: 0
 ## BUG ash STDOUT:
 0
 0

test/runtime-errors.sh

@@ -1204,14 +1204,11 @@ test-int-overflow() {
   _osh-error-1 'printf %d'" $pos"
   _osh-error-1 'printf %d'" $neg"
 
-  # TODO
-  return
-
-  _osh-error-1 "trap $pos ERR"
-  _osh-error-1 "trap $neg ERR"
+  _osh-error-2 "trap $pos ERR"
+  _osh-error-2 "trap $neg ERR"
 
-  _osh-error-1 "ulimit $pos"
-  _osh-error-1 "ulimit $neg"
+  _osh-error-2 "ulimit $pos"
+  _osh-error-2 "ulimit $neg"
 }
 
 #