-Werror=implicit-function-declaration 是GCC(GNU Compiler Collection)编译器的一个编译选项。这个选项分为两部分:-Wimplicit-function-declaration 和-Werror。 -Wimplicit-function-declaration:启用时,如果编译器在函数被调用之前没有遇到该函数的声明(即函数原型),则会产生一个警告。 -Werror:将所有警告视为错误...
1 intm(int,int); 简单举例: 1#include <stdio.h>23intm(intx,inty);//在这里提前进行声明4intmain(intargc,charconst*argv[])5{6inta, b, c;7printf("输入两个整数:\n");8scanf("%d%d", &a, &b);9c =m(a, b);10printf("%d\n", c);11return0;12}1314intm(intx,inty) {15intz;...
具体错误: builds/unix/ftsystem.c:325:22: error: implicit declaration of function 'read'[-Werror,-Wimplicit-function-declaration]read_count = read( file,^builds/unix/ftsystem.c:325:22: note: did you mean 'fread'?/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SD...
-Wimplicit-Fallthrough = 0完全禁用警告。 -Wimplicit-fallthrough = 1匹配.正则表达式,任何评论都被用作fallthrough评论。 -wimplicit-fallthrough = 2 case nonnsitively matches .falls?[ \t-]thr(ough|u).正则表达式。 -Wimplicit-fallthrough = 3大小写敏感地匹配以下正则表达式之一: -fallthrough @fall...
-Wimplicit-function-declaration (C and Objective-C only) -Winit-self (only for C++) -Wlogical-not-parentheses -Wmain (only for C/ObjC and unless -ffreestanding) -Wmaybe-uninitialized -Wmemset-elt-size -Wmemset-transposed-args -Wmisleading-indentation (only for C/C++) ...
GCC 9 emits the following new warning: cc1plus: warning: ‘-Werror=’ argument ‘-Werror=implicit-function-declaration’ is not valid for C++ Please remove the flag for C++ code.
I ran into the OpenSSL build failure recently with -Werror. Out of curiosity, I looked at the issue tracker and it seems like the use of -Werror is a source of repeated build problems. Some examples: #1998 due to -Werror + -Wimplicit-fun...
builds/unix/ftsystem.c:346:5: error: implicit declaration of function 'close' [-Werror,-Wimplicit-function-declaration] close( file ); 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 解决办法: 说到底就是没有包含相应的头文件: ...
error: implicit declaration of function ‘RAND_egd’ [-Werror=implicit-function-declaration],具体错误:vtls/openssl.c:479:15:error:implicitdeclarationoffunction‘RAND_egd’[-Werror=implicit-function-declaration]intret=RAND_egd(data->set.str[STRING_SSL_E
1.30.0 fails to build on Mac OS X 10.7: src/lib/ares_event_configchg.c:370:11: error: implicit declaration of function 'fcntl' [-Werror,-Wimplicit-function-declaration] flags = fcntl((*configchg)->fd, F_GETFL, 0); ^ src/lib/ares_event_co...