} 然后使用CMake编译时显示错误 /home/cv/playground_test/src/playground.cc:185:10: Infunction‘int main(int, const char**)’: error: comparison between signed and unsignedintegerexpressions [-Werror=sign-compare]if(-1L > 1UL) ~~~^~~~ cc1plus: all warnings being treated as errors CMakeF...
warning: comparison between signed and unsigned integer expressions [-Wsign-compare] I thought I could safely ignore these, since it seems plausible to compare a signed value with an unsigned value. A signed value of -42 should be less than an unsigned value of 42, right? In the...
有些编译器会在程序试图比较有符号数与无符号数时给出一条类似“comparison between signed and unsigned”的警告消息。 因为此类陷阱的存在,所以最好尽量避免使用无符号整数,特别是不要把它和有符号整数混合使用。 16. 类型转换 C语言把(类型名)视为一元运算符。一元运算符的优先级高于二元运算符,因此编译器会把...
New warning: "comparison of integer expressions of different signedness: ‘Py_ssize_t’ {aka ‘long int’} and ‘long unsigned int’ [-Wsign-compare]"#115391 Closed gh-115827: Fix compile warning inlongobject.c#115828 Merged MemberAuthor ...
-c main.cpp -o out/main.o main.cpp: In function ‘void test_elog()’: main.cpp:80:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < sizeof(buf); i++) ^ gcc -I./easylogger/easylogger/inc -I./easylogger/source_code/inc -...
warning: comparison between signed and unsigned integer expressions [-Wsign-compare] 执行结果输出: 0 原因: TOTAL_ELEMENTS所定义的值是unsigned int类型(因为sizeof()的返回类型是无符号数)。 if语句在signed int和unsigned int之间测试相等性,所以d被升级为unsigned int类型,-1转换成unsigned int的结果是一个...
very simple the compiler will show you there are the line numbers of the error. go to this lines and add (unsigned long) in the places there is a comparison issue to the int side. (if ( pos + bytesNeeded <= (unsigned long) b->dataSize )) I had the same thing and after adding ...
cpp:80:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < sizeof(buf); i++) ^ gcc -I./easylogger/easylogger/inc -I./easylogger/source_code/inc -I./easylogger/source_code/plugins/file -O0 -g3 -Wall -Wall -I. -c -o ...
= NonEquality > Greater T han >= Greater T han or Equal < Less T han <= Less T han or Equal They can all be combined with these flags: Flag Meaning Signed comparison (default) u Unsigned comparison f Floating point comparison fo Floating point unordered comparison; if supported When the...
strncasecmp() — Case-insensitive string comparison strncat() — Concatenate strings strncmp() — Compare strings strncpy() — Copy string strpbrk() — Find characters in string strptime() — Date and time conversion strrchr() — Find last occurrence of character in string strspn() —...