问题:typedef name <name> used in expression context
症状:
将一行代码(确保无语法和语义错误),放在:
#if 1
……..
#endif
之前的话,就会出现错误:
C2292E: typedef name <name> used in expression context
解决办法:
去网上找到:
http://www.arm.com/support/ADS_Errors_and_Warnings.pdf
解释说是:
This occurs when a typedef name is being used directly in an expression, e.g:
typedef int footype;
int x = footype; // reports "typedef name ‘footype’ used in expression
context"
To fix this, you must create an instance of that type (e.g. a variable of the new type) first, e.g:
typedef int footype;
footype bar = 1;
int x = bar;
但是,我这不是这个问题.
后来经过反复折腾,最后将原先那行代码移到
#if 1
……..
#endif
后面,就可以编译过了.
基本可以确定,是ARM 的编译器armcc的问题,估计是词法或语法方面分析有问题.