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  • GCC -Wall

    官网:http://gcc.gnu.org/onlinedocs/gcc-4.7.2/gcc/Warning-Options.html#Warning-Options
    3.8 Options to Request or Suppress Warnings
    .....
    -Wall
    This enables all the warnings about constructions that some users consider questionable, and that are easy to avoid (or modify to prevent the warning), even in conjunction with macros. This also enables some language-specific warnings described in C++ Dialect Options and Objective-C and Objective-C++ Dialect Options.
    -Wall turns on the following warning flags:

              -Waddress   
              -Warray-bounds (only with -O2)  
              -Wc++11-compat  
              -Wchar-subscripts  
              -Wenum-compare (in C/Objc; this is on by default in C++) 
              -Wimplicit-int (C and Objective-C only) 
              -Wimplicit-function-declaration (C and Objective-C only) 
              -Wcomment  
              -Wformat   
              -Wmain (only for C/ObjC and unless -ffreestanding)  
              -Wmaybe-uninitialized 
              -Wmissing-braces  
              -Wnonnull  
              -Wparentheses  
              -Wpointer-sign  
              -Wreorder   
              -Wreturn-type  
              -Wsequence-point  
              -Wsign-compare (only in C++)  
              -Wstrict-aliasing  
              -Wstrict-overflow=1  
              -Wswitch  
              -Wtrigraphs  
              -Wuninitialized  
              -Wunknown-pragmas  
              -Wunused-function  
              -Wunused-label     
              -Wunused-value     
              -Wunused-variable  
              -Wvolatile-register-var 

    http://wenku.baidu.com/link?url=gbKosrdpS_vhpyXIdn11qWOssqdxMhvjdxGw6LPgQ2Wr5Py_e5O8FRdLvoZ8tLRhA-SL6VUVYz2gqOf6AsOmn1UOeTig-B8pBK_fL6sdpYq

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  • 原文地址:https://www.cnblogs.com/diyunpeng/p/3679135.html
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