Implementation-defined behavior是指在编程语言中,在特定情况下编译器或者运行时环境可以自由选择具体行为的情况。一种IDB的行为在一个实现(compiler或者runtime)中可能与另一个实现不同,但在同一个实现中则是确定的。这种行为取决于编译器、操作系统、硬件等因素,并不是由语言标准所明确定义的。 举个例子来说,C语言...
OpenMP Overview OpenACC Use Unified Parallel C (UPC) C++ Libraries Coarray C++ Use Cray C Extension Use Predefined Macro Use Run C and C++ Applications Debug Cray C and C++ Code Interlanguage Communication Implementation-defined Behavior Library and Linker Use ...
Implementation-defined behavior refers to the behavior exhibited by a program when specific details, such as those related to data representation, are not defined by the programming language's standard. This meansthat different implementations of the same programming language may exhibit different behavior...
Each item covered includes references to the ANSI that explains the implementation-defined behavior.Note This section describes the U.S. English-language version of the C compiler only. Implementations of Microsoft C for other languages may differ slightly....
wait-policy-var: Controls the desired behavior of waiting threads. The initial value ofwait-policy-varisPASSIVE. thread-limit-var: Controls the maximum number of threads participating in the OpenMP program. The initial value of thread-limit-var is 1024. ...
An implementation is required to define and document its behavior in these cases, but this list may be incomplete. Number of threads:If a parallel region is encountered while dynamic adjustment of the number of threads is disabled, and the number of threads requested for the parallel region exce...
Explanation Pragma directive controls implementation-specific behavior of the compiler, such as disabling compiler warnings or changing alignment requirements. Any pragma that is not recognized is ignored. Non-standard pragmas The ISO C++ language standard does not require the compilers to support any pr...
Applying the indirection operator to a null pointer results in an implementation-defined behavior. 如果将间接寻址运算符应用于null指针,则会导致由实现定义的行为。 msdn2.microsoft.com 5. If the pointer is null, the system initializes the slave's termios structure to an implementation-defined initial...
(6.8.6) The behavior on each recognized#pragmadirective: The following pragmas are supported. See2.8 Pragmasfor more information. aligninteger(variable[, variable]) does_not_read_global_data(funcname [,funcname]) does_not_return(funcname[,funcname]) ...
In#1288which I've found, there was some back and forth about what the first sentence there means (which I agree with -- i.e. that the current spec seems to treat this schema as any other subschema, by virtue of omission). But the second sentence still has undefined behavior, because...