Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 663 by [email protected]: Undefined behavior while running
unit tests
http://code.google.com/p/protobuf/issues/detail?id=663
Hello,
When compiling protobuf 2.6.0-rc1 with gcc 4.9's undefined behavior
detector, I get runtime errors from protoc:
./configure CXX="g++-4.9" CXXFLAGS="-O0 -ggdb -fsanitize=undefined
-fsanitize=signed-integer-overflow" && make
[...]
oldpwd=`pwd` && ( cd . && $oldpwd/protoc -I. --cpp_out=$oldpwd
google/protobuf/unittest.proto google/protobuf/unittest_empty.proto
google/protobuf/unittest_import.proto
google/protobuf/unittest_import_public.proto
google/protobuf/unittest_mset.proto
google/protobuf/unittest_optimize_for.proto
google/protobuf/unittest_embed_optimize_for.proto
google/protobuf/unittest_custom_options.proto
google/protobuf/unittest_lite.proto
google/protobuf/unittest_import_lite.proto
google/protobuf/unittest_import_public_lite.proto
google/protobuf/unittest_lite_imports_nonlite.proto
google/protobuf/unittest_no_generic_services.proto
google/protobuf/compiler/cpp/cpp_test_bad_identifiers.proto )
google/protobuf/stubs/strutil.cc:908:17: runtime error: signed integer
overflow: 42 * -100000000 cannot be represented in type 'int'
google/protobuf/compiler/parser.cc:1103:41: runtime error: negation of
-9223372036854775808 cannot be represented in type 'long int'; cast to an
unsigned type to negate this value to itself
[...]
Note that -9223372036854775808 is -0x8000000000000000.
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