ensure proper stack limit use + raise in debug mode

Author: WebFreak001

test/run_tests.sh

@@ -31,7 +31,7 @@ test_fail() {
 }
 
 # if tester segfaults, it's most likely due to a stack overflow
-# check the max stack size in tester.d in that case
+# check the maxStackSize variable in tester.d in that case
 # (increasing it should be avoided if it's possible to implement tail recursion or other stack saving techniques)
 
 for i in $PASS_FILES; do
@@ -116,9 +116,9 @@ fi
 echo
 find . -name "*.lst" -exec rm -f {} \;
 echo -en "Generating coverage reports... "
-${DMD} tester.d -cov -unittest $SOURCE_FILES $IMPORT_PATHS
+${DMD} tester.d -debug -cov -unittest $SOURCE_FILES $IMPORT_PATHS
 # if tester segfaults, it's most likely due to a stack overflow
-# check the max stack size in tester.d in that case
+# check the maxStackSize variable in tester.d in that case
 # (increasing it should be avoided if it's possible to implement tail recursion or other stack saving techniques)
 ./tester --ast --DRT-testmode=run-main $PASS_FILES $FAIL_FILES ast_checks/*.d &> /dev/null || true
 rm -rf coverage/

test/tester.d

@@ -307,11 +307,13 @@ int main(string[] args)
     printer.output = stdout;
     bool done;
 
+    // increase stack size in case of segfault:
+    // stack usage in debug / non-optimized mode is _much_ higher
     version (D_Coverage)
-        enum maxStackSize = 128 * 4096;
+        enum maxStackSize = 256 * 4096;
     else debug
-        enum maxStackSize = 128 * 4096;
-    else // increase stack size in case of segfault:
+        enum maxStackSize = 256 * 4096;
+    else
         enum maxStackSize = 40 * 4096;
 
     // use a fiber to limit stack size