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configure: Explicitly enable float-divide-by-zero with ubsan 

Before clang 9, it was enabled by default
when -fsanitize=undefined was set.

Pick-to: 5.15
Change-Id: I0faf3ae1901d4badc6d265fa8081185be4360636
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Robert Loehning 2020-08-03 14:30:21 +02:00
parent ef8fe74324
commit 7d7e62967f
2 changed files with 4 additions and 4 deletions
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2
cmake/3rdparty/extra-cmake-modules/modules/ECMEnableSanitizers.cmake vendored
View File

@ -139,7 +139,7 @@ macro (enable_sanitizer_flags sanitize_option)
set(XSAN_LINKER_FLAGS "lsan")
elseif (${sanitize_option} MATCHES "undefined")
check_compiler_version("4.9" "3.1")
set(XSAN_COMPILE_FLAGS "-fsanitize=undefined -fno-omit-frame-pointer -fno-optimize-sibling-calls")
set(XSAN_COMPILE_FLAGS "-fsanitize=undefined -fsanitize=float-divide-by-zero -fno-omit-frame-pointer -fno-optimize-sibling-calls")
else ()
message(FATAL_ERROR "Compiler sanitizer option \"${sanitize_option}\" not supported.")
endif ()

6
mkspecs/common/sanitize.conf
View File

@ -21,7 +21,7 @@ QMAKE_SANITIZE_FUZZERNL_CFLAGS = -fsanitize=fuzzer-no-link
QMAKE_SANITIZE_FUZZERNL_CXXFLAGS = -fsanitize=fuzzer-no-link
QMAKE_SANITIZE_FUZZERNL_LFLAGS = -fsanitize=fuzzer-no-link
QMAKE_SANITIZE_UNDEFINED_CFLAGS = -fsanitize=undefined
QMAKE_SANITIZE_UNDEFINED_CXXFLAGS = -fsanitize=undefined
QMAKE_SANITIZE_UNDEFINED_LFLAGS = -fsanitize=undefined
QMAKE_SANITIZE_UNDEFINED_CFLAGS = -fsanitize=undefined -fsanitize=float-divide-by-zero
QMAKE_SANITIZE_UNDEFINED_CXXFLAGS = -fsanitize=undefined -fsanitize=float-divide-by-zero
QMAKE_SANITIZE_UNDEFINED_LFLAGS = -fsanitize=undefined -fsanitize=float-divide-by-zero