# HG changeset patch
# User Tassilo Philipp
# Date 1643234647 -3600
# Node ID 54c1dc2e6ea526758dde3fb09d40909f8c7bb449
# Parent  4bd3ed699de8c994842d1b340ff0a700eb941139
suite_aggrs: added knob to enable/disable generation of empty structs (some compilers like Plan9's pcc don't allow them)

diff -r 4bd3ed699de8 -r 54c1dc2e6ea5 test/suite_aggrs/cases.c
--- a/test/suite_aggrs/cases.c	Wed Jan 26 18:41:31 2022 +0100
+++ b/test/suite_aggrs/cases.c	Wed Jan 26 23:04:07 2022 +0100
@@ -47,7 +47,13 @@
 #define a void*  /* all generated aggregates */
 
 #include "dyncall.h"
-#include "cases.h"
+
+#if defined(DC__OS_Plan9)
+/* Plan9 pcc does not allow empty structs */
+#  include "nonemptystructs.h"
+#else
+#  include "cases.h"
+#endif
 
 int G_ncases = sizeof(G_sigtab)/sizeof(G_sigtab[0]);
 int G_naggs  = sizeof(G_agg_sigs)/sizeof(G_agg_sigs[0]);
diff -r 4bd3ed699de8 -r 54c1dc2e6ea5 test/suite_aggrs/config.lua
--- a/test/suite_aggrs/config.lua	Wed Jan 26 18:41:31 2022 +0100
+++ b/test/suite_aggrs/config.lua	Wed Jan 26 23:04:07 2022 +0100
@@ -2,6 +2,7 @@
 minargs      = 0
 maxargs      = 16
 maxaggrdepth = 3    -- max nesting depth of aggregates, 1 = no nesting
+emptyaggrs   = true -- whether to allow empty aggregates or not
 ncases       = 800
 types        = "csijlpfd{}"
 seed         = 2112
diff -r 4bd3ed699de8 -r 54c1dc2e6ea5 test/suite_aggrs/rand-sig.lua
--- a/test/suite_aggrs/rand-sig.lua	Wed Jan 26 18:41:31 2022 +0100
+++ b/test/suite_aggrs/rand-sig.lua	Wed Jan 26 23:04:07 2022 +0100
@@ -52,8 +52,8 @@
       sig[#sig+1] = mktype(types:sub(id,id), 0, math.random(maxaggrdepth)) -- random depth avoids excessive nesting
     end
     l = table.concat(sig)
-    -- reject dupes and sigs without any aggregate, as this is about aggrs after all
-  until string.match(l, '{') ~= nil and uniq_sigs[l] == nil
+    -- reject dupes, sigs without any aggregate (as this is about aggrs after all), and empty ones (if not wanted)
+  until string.match(l, '{') ~= nil and uniq_sigs[l] == nil and (emptyaggrs or string.match(l, '{}') == nil)
   uniq_sigs[l] = 1
   io.write(l.."\n")
 end