如果在开启「Treat warnings as errors」的时候,想忽略某些 warning,可以使用 `-Wno-error=`。例如在添加 `-Wno-error=unused-variable` 的时候, 「未使用的变量」warning 不会视为 error。[Reference](Using the GNU Compiler Collection (GCC): Warning Options), [all warning flags] (Diagnostic flags in C...
上面这段代码是段神奇的代码,gcc 4.1.2 上可以编译通过,但会告警“ taking address of temporary”,执行后的结果是: 可见使用临时地址的输出是不符合预期的,而大部分情况下,这种行为的结果是未知的,所以高版本的gcc会直接error,无法编译通过。 CASE 10: invalid access to non-static data member 'xxx' of NUL...
kind is ‘error’ to treat this diagnostic as an error, ‘warning’ to treat it like a warning (even if -Werror is in effect), or ‘ignored’ if the diagnostic is to be ignored. option is a double quoted string that matches the command-line option. #pragma GCC diagnostic warning "-...
/usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/unique_ptr.h:81:2: error: delete called on non-final'vcpkg::PortFileProvider::PathsPortFileProvider'that has virtual functions but non-virtual destructor [-Werror,-Wdelete-non-abstract-non-virtual-dtor] delete ...
CASE 6: suggest parentheses around assignment used as truth value 含义:建议加个括号赋值表达式两边 可能存在的问题:逻辑错误 代码示例: 在C语言中,非0即代表TRUE,反之为FALSE。上面的语句会以“= ”前面的值用于最后的判断。但是长期的编程实践告诉我们,人们经常在“=”和“”的使用上出现手误,所以gcc编译器...
As a workaround, add-Wno-error=unused-but-set-variableor-Wno-error=unused-but-set-parameter. -Werror Make all warnings into errors -Wall -Wallturns on the following warning flags: --Waddress -Warray-bounds (only with -O2) -Wc++11-compat ...
Mismatched return type (GCC_WARN_ABOUT_RETURN_TYPE) 这个会检测函数的返回值类型是否匹配,试了几个情况,缺还预想的不同,这里应该只会检查是否给了返回值;默认YES treat as error //-- Check Mismatched return type - (NSTimer*)testMismatched_return_type{ ...
Mingw32-gcc-4.7.2) and another one that creates an ELF (for real hardware). Both compilers have partially different behaviors, but we want them to be as similar as possible, at least when it comes to errors. There is one particular error, that I want to activate in GCC, ...
gcc 4.6.1(命令 gcc -c -Werror warning-test.c ),我得到以下输出: warning-test.c:3:2: warning: #warning one [-Wcpp] warning-test.c:6:2: error: #warning two [-Werror=cpp] cc1: all warnings being treated as errors 当我删除第二个 ...
最近在编译Android kernel时,遇到error, forbidden warning, 导致编译中断,大大降低了debug效率。 做法 关闭方法:在kernel/scripts/gcc-wrapper.py中注释掉interpret_warning(line)即可。 diff --git a/kernel/scripts/gcc-wrapper.py b/kernel/scripts/gcc-wrapper.py ...