Simple test to do clang/asan builds on gz-math (#647)

Signed-off-by: Michael Carroll <[email protected]>
Co-authored-by: Alejandro Hernández Cordero <[email protected]>

.bazelrc

@@ -13,3 +13,5 @@ build --features=per_object_debug_info
 
 # Enable header processing, required for layering checks with parse_header.
 build --process_headers_in_dependencies
+
+import %workspace%/tools/bazel.rc

tools/BUILD.bazel

@@ -0,0 +1,5 @@
+sh_binary(
+    name = "asan",
+    srcs = ["asan.sh"],
+    data = ["asan.supp"],
+)

tools/asan.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+me=$(python3 -c 'import os; print(os.path.realpath("'"$0"'"))')
+mydir=$(dirname "$me")
+export ASAN_OPTIONS="$ASAN_OPTIONS:check_initialization_order=1:detect_container_overflow=0:detect_invalid_pointer_pairs=1:detect_stack_use_after_return=1:strict_init_order=1:strict_string_checks=1:strip_path_prefix=/proc/self/cwd/:suppressions=$mydir/asan.supp"
+# LSan is run with ASan by default, ASAN_OPTIONS can't be used to suppress LSan
+# errors
+export LSAN_OPTIONS="$LSAN_OPTIONS:strip_path_prefix=/proc/self/cwd/:suppressions=$mydir/lsan.supp"
+# Ensure executable named llvm-symbolizer is on the PATH.
+export PATH="$PATH:/usr/lib/llvm-14/bin:/usr/lib/llvm-12/bin:/usr/local/opt/llvm/bin"
+"$@"

tools/bazel.rc

@@ -0,0 +1,36 @@
+common:clang --repo_env=CC=clang-15
+common:clang --repo_env=CXX=clang++-15
+build:clang --action_env=CC=clang-15
+build:clang --action_env=CXX=clang++-15
+build:clang --host_action_env=CC=clang-15
+build:clang --host_action_env=CXX=clang++-15
+
+### ASan build. Clang only. ###
+build:asan --build_tests_only
+build:asan --copt=-g
+# https://github.com/google/sanitizers/wiki/AddressSanitizer#faq
+build:asan --copt=-fno-common
+build:asan --copt=-fsanitize=address
+build:asan --copt=-fsanitize-address-use-after-scope
+build:asan --copt=-fstandalone-debug
+build:asan --copt=-O0
+build:asan --copt=-fno-omit-frame-pointer
+build:asan --linkopt=-fsanitize=address
+build:asan --linkopt=-fsanitize-address-use-after-scope
+build:asan --run_under=//tools:asan
+build:asan --test_env=ASAN_OPTIONS
+build:asan --test_env=LSAN_OPTIONS
+build:asan --test_env=ASAN_SYMBOLIZER_PATH
+build:asan --test_env=LSAN_SYMBOLIZER_PATH
+# LSan is run with ASan by default
+build:asan --test_tag_filters=-gurobi,-mosek,-snopt,-no_asan,-no_lsan
+build:asan --test_lang_filters=-sh,-py
+# Typical slowdown introduced by AddressSanitizer is 2x.
+# See https://clang.llvm.org/docs/AddressSanitizer.html
+build:asan --test_timeout=150,750,2250,9000  # 2.5x
+build:asan --define=USING_SANITIZER=ON
+# Due to https://sourceware.org/bugzilla/show_bug.cgi?id=25975, we see ...
+#  ld.gold: warning: Cannot export local symbol __asan_extra_spill_area
+# ... spammed millions of times in ASan builds. The only way to silence that
+# warning is to silence ALL WARNINGS AT ALL EVER in ASan builds.
+build:asan --auto_output_filter=all