编译php扩展时出现编译错误

Question

我正在关注本教程 为php构建一个hello-world类型扩展，并在Windows7上使用Visual Studio 2008 Express进行编译。当我构建时，我收到这些错误：

• 1 与分配大小为 0 的常量数组有关，
• 其他似乎与时间有关。

但我不确定它们的全部含义或如何解决它们。

Compiling...
stdafx.cpp
C:\Program\VS2008\VC\include\sys/stat.inl(44) : error C2466: cannot allocate an array of constant size 0
C:\Program\VS2008\VC\include\sys/stat.inl(49) : error C2466: cannot allocate an array of constant size 0
C:\Program\VS2008\VC\include\sys/utime.inl(39) : error C2466: cannot allocate an array of constant size 0
C:\Program\VS2008\VC\include\sys/utime.inl(44) : error C2466: cannot allocate an array of constant size 0
C:\Program\VS2008\VC\include\sys/utime.inl(49) : error C2466: cannot allocate an array of constant size 0
C:\Program\VS2008\VC\include\sys/utime.inl(78) : error C2466: cannot allocate an array of constant size 0
C:\Program\VS2008\VC\include\wtime.inl(37) : error C2664: '_wctime32' : cannot convert parameter 1 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\wtime.inl(43) : error C2664: 'errno_t _wctime32_s(wchar_t *,size_t,const __time32_t *)' : cannot convert parameter 3 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\time.inl(32) : warning C4244: 'argument' : conversion from 'time_t' to '__time32_t', possible loss of data
C:\Program\VS2008\VC\include\time.inl(32) : warning C4244: 'argument' : conversion from 'time_t' to '__time32_t', possible loss of data
C:\Program\VS2008\VC\include\time.inl(38) : error C2664: '_ctime32' : cannot convert parameter 1 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\time.inl(44) : error C2664: 'errno_t _ctime32_s(char *,size_t,const __time32_t *)' : cannot convert parameter 3 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\time.inl(51) : error C2664: '_gmtime32' : cannot convert parameter 1 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\time.inl(57) : error C2664: '_gmtime32_s' : cannot convert parameter 2 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\time.inl(64) : error C2664: '_localtime32' : cannot convert parameter 1 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\time.inl(69) : error C2664: '_localtime32_s' : cannot convert parameter 2 from 'const time_t *' to 'const __time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
C:\Program\VS2008\VC\include\time.inl(81) : error C2664: '_time32' : cannot convert parameter 1 from 'time_t *' to '__time32_t *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

Answer 1

如果您查看文件中的这些行，那么在 STATIC_ASSERT 的定义中，这些行实际上是 STATIC_ASSERT 失败，检查标准类型名称是否与特定大小的 32 位类型名称相匹配。在我看来，32 位和 64 位编译之间存在某种不匹配。

无法分配大小为 0 的数组的业务是静态断言宏中使用的技巧。信息不是很丰富。