make/autoconf/flags-cflags.m4

*** 148,158 ****
--- 148,164 ----
      WARNINGS_AS_ERRORS=true
    elif test "x$enable_warnings_as_errors" = "xno"; then
      AC_MSG_RESULT([no (explicitly set)])
      WARNINGS_AS_ERRORS=false
    elif test "x$enable_warnings_as_errors" = "x"; then
+     # gcc might produce false positive results when code coverage is enabled
+     if test "x$enable_native_coverage" = "xyes" && test "x$TOOLCHAIN_TYPE" = "xgcc"; then
+       AC_MSG_RESULT([no (disabled for native code coverage)])
+       WARNINGS_AS_ERRORS=false
+     else
        AC_MSG_RESULT([${WARNINGS_AS_ERRORS} (default)])
+     fi
    else
      AC_MSG_ERROR([--enable-warnings-as-errors accepts no argument])
    fi
  
    AC_SUBST(WARNINGS_AS_ERRORS)