Added regression test .cpp compilation + execution results capture for clang++-12

Author: hsutter

regression-tests/test-results/clang-12/clang-version.output

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+Ubuntu clang version 12.0.0-3ubuntu1~20.04.5
+Target: x86_64-pc-linux-gnu
+Thread model: posix
+InstalledDir: /usr/bin

regression-tests/test-results/clang-12/mixed-allcpp1-hello.cpp.execution

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+Hello world

regression-tests/test-results/clang-12/mixed-allcpp1-hello.cpp.output

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+Bounds safety violation: out of bounds access attempt detected
+terminate called without an active exception

regression-tests/test-results/clang-12/mixed-bounds-check.cpp.execution

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+1
+44
+45
+46
+5

regression-tests/test-results/clang-12/mixed-bounds-check.cpp.output

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+Bounds safety violation
+terminate called without an active exception

regression-tests/test-results/clang-12/mixed-bounds-safety-with-assert-2.cpp.execution

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+hello
+2022
+hello-ish
+2022-ish

regression-tests/test-results/clang-12/mixed-bounds-safety-with-assert-2.cpp.output

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+hello-ish maybe
+2022-ish maybe

regression-tests/test-results/clang-12/mixed-bounds-safety-with-assert.cpp.execution

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+hello
+2022
+hello-ish
+2022-ish

regression-tests/test-results/clang-12/mixed-bounds-safety-with-assert.cpp.output

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+hello
+2022
+hello-ish
+2022-ish

regression-tests/test-results/clang-12/mixed-captures-in-expressions-and-postconditions.cpp.execution

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+
+hello
+
+2023
+hello-ish
+2023-ish

regression-tests/test-results/clang-12/mixed-captures-in-expressions-and-postconditions.cpp.output

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+
+hello
+
+2022
+hello-ish
+2022-ish

regression-tests/test-results/clang-12/mixed-function-expression-and-std-for-each.cpp.execution

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+Hello [world]

regression-tests/test-results/clang-12/mixed-function-expression-and-std-for-each.cpp.output

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+Contract violation: fill: value must contain at least count elements
+terminate called without an active exception

regression-tests/test-results/clang-12/mixed-function-expression-and-std-ranges-for-each-with-capture.cpp.execution

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+>> [xyzzy]

regression-tests/test-results/clang-12/mixed-function-expression-and-std-ranges-for-each-with-capture.cpp.output

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+>> hello
+>> big
+>> world
+  **  **  **
+>> [hello]
+>> [big]
+>> [world]

regression-tests/test-results/clang-12/mixed-function-expression-and-std-ranges-for-each.cpp.execution

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+1 42
+2 84
+3 168
+4 336
+5 672

regression-tests/test-results/clang-12/mixed-function-expression-and-std-ranges-for-each.cpp.output

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+sending error to my framework... [dynamic null dereference attempt detected]

regression-tests/test-results/clang-12/mixed-function-expression-with-pointer-capture.cpp.execution

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+>> 42

regression-tests/test-results/clang-12/mixed-function-expression-with-pointer-capture.cpp.output

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+a is 10
+b is xyzzy

regression-tests/test-results/clang-12/mixed-function-expression-with-repeated-capture.cpp.execution

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+enter main
+enter f00
+enter f01
++X 1
+exit f01
+-X 1
+exit f00
+
+enter f10
+enter f11
+enter f12
+enter f13
+enter f14
++X 2
+exit f14
+exit f13
+exit f12
+-X 2
+exit f11
+exit f10
+exit main

regression-tests/test-results/clang-12/mixed-function-expression-with-repeated-capture.cpp.output

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+a = 2, b = (empty)
+a^2 + b = 46
+sv = my string_view
+osv = (empty)
+osv = string literal bound to optional string_view
+var = (empty)
+var = abracadabra
+var = 2.718280
+mypair = (12, 3.400000)
+tup1 = (12)
+tup2 = (12, 3.400000)
+tup3 = (12, 3.400000, 456)
+p = (first, (empty))
+t = (3.140000, (empty), (empty))
+vv = 0
+vv = (1, 2.300000)
+custom = (customize me - no cpp2::to_string overload exists for this type)

regression-tests/test-results/clang-12/mixed-hello.cpp.execution

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+12

regression-tests/test-results/clang-12/mixed-hello.cpp.output

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+1.1 is int? false
+1   is int? true
+
+s* is Shape?  true
+s* is Circle? true
+s* is Square? false

regression-tests/test-results/clang-12/mixed-initialization-safety-3-contract-violation.cpp.execution

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+>> decorated
+>> hello
+>> world

regression-tests/test-results/clang-12/mixed-initialization-safety-3-contract-violation.cpp.output

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+pure2-bugfix-for-name-lookup-and-value-decoration.cpp2:8:7: warning: expression result unused [-Wunused-value]
+    v.i;
+    ~ ^
+1 warning generated.

regression-tests/test-results/clang-12/mixed-initialization-safety-3.cpp.execution

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+Hello [world]

regression-tests/test-results/clang-12/mixed-initialization-safety-3.cpp.output

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+                             d value is not an int or string
+              St7variantIJidEE value is not an int or string
+                        St3any value is "xyzzy"
+                St8optionalIiE value is not an int or string
+                             i value is integer 42
+              St7variantIJidEE value is integer 1
+                        St3any value is integer 2
+                St8optionalIiE value is integer 3

regression-tests/test-results/clang-12/mixed-inspect-with-typeof-of-template-arg-list.cpp.execution

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+                          A7_c value is not an int
+                             i value is 1
+                             d value is not an int

regression-tests/test-results/clang-12/mixed-inspect-with-typeof-of-template-arg-list.cpp.output

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+
+All these cases satisfy "matches std::string"
+
+St7variantIJiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEE
+    ... matches std::string
+
+St3any
+    ... matches std::string
+
+St8optionalINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE
+    ... matches std::string

regression-tests/test-results/clang-12/mixed-intro-example-three-loops.cpp.execution

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+
+All these cases satisfy "VOYDE AND EMPTIE"
+
+St10unique_ptrIiSt14default_deleteIiEE
+    ... VOYDE AND EMPTIE
+
+N9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEE
+    ... VOYDE AND EMPTIE
+
+St7variantIJSt9monostateiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEE
+    ... VOYDE AND EMPTIE
+
+St3any
+    ... VOYDE AND EMPTIE
+
+St8optionalINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE
+    ... VOYDE AND EMPTIE

regression-tests/test-results/clang-12/mixed-intro-example-three-loops.cpp.output

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+>> [hello] - length 7
+>> [2022] - length 6

regression-tests/test-results/clang-12/mixed-intro-for-with-counter-include-last.cpp.execution

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+>> hello
+>> big
+>> world
+  **  **  **
+>> [hello]
+>> [big]
+>> [world]

regression-tests/test-results/clang-12/mixed-intro-for-with-counter-include-last.cpp.output

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+84

regression-tests/test-results/clang-12/mixed-lifetime-safety-and-null-contracts.cpp.execution

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+                              d is int? false
+               St7variantIJidEE is int? false
+                         St3any is int? false
+                 St8optionalIiE is int? false
+
+                              i is int? true
+               St7variantIJidEE is int? true
+                         St3any is int? true
+                 St8optionalIiE is int? true

regression-tests/test-results/clang-12/mixed-lifetime-safety-and-null-contracts.cpp.output

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+                             d value is not an int
+              St7variantIJidEE value is not an int
+                        St3any value is not an int
+                St8optionalIiE value is not an int
+                             i value is 42
+              St7variantIJidEE value is 1
+                        St3any value is 2
+                St8optionalIiE value is 3

regression-tests/test-results/clang-12/mixed-lifetime-safety-pointer-init-4.cpp.execution

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+# This is intended to be run in the /test-results/clang-12 subdirectory
+# in a Linux shell with clang++-12 installed
+#
+cp ../*.cpp .
+rm -f *.output
+count=0
+exe_count=0
+clang++-12 --version > clang-version.output 2>&1
+for f in *.cpp
+do
+    printf "Starting clang++-12 %s\n" "$f"
+    clang++-12 -I/mnt/c/GitHub/cppfront/include -std=c++20 -pthread -o test.exe $f > $f.output 2>&1
+    rm -f $f
+    let count=count+1
+    if test -f "test.exe"; then
+        let exe_count=exe_count+1
+        printf "    Starting executable\n"
+        ./test.exe > $f.execution 2>&1
+        rm -f test.exe
+    fi
+done
+rm -f *.obj *.exp *.lib
+printf "\nDone: %s .cpp tests compiled\n" "$count"
+printf "\n      %s .cpp executables generated and run\n" "$exe_count"

regression-tests/test-results/clang-12/mixed-lifetime-safety-pointer-init-4.cpp.output

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+Hello Fred with UFCS!