// g++ 1.37.1 bug 900330_01 // // As indicated by the example at the end of the section 3.5.3 of the ANSI // C standard, when a type qualifier (i.e. "const" or "volatile") is applied // to an array type, the effect should be as if the element type had been // qualified with the given qualifier. // // This rule applies to C++ also. // // In section 7.1.6 of the C++ Reference Manual it says "Each element of a // const array is const..." // // It appears however that when a name already exists for a given array type // (i.e. a typedef name) and when that name is qualified by a type qualifier, // (i.e. "const" or "volatile"), gcc & g++ may act as if the qualifier applied // to the named (array) type rather that to the elements of that type. // // The result is that (even with the -ansi and -pedantic options) g++ // generates no errors or warnings for the lines indicated (even though it // should). // // Due to the incorrect associations, gcc & g++ will also issue inappropriate // warnings in some cases (as illustrated below). // keywords: type qualifiers, arrays typedef const int const_int; typedef const_int array_of_const_int[3]; array_of_const_int *ptr_to_array_of_consts; typedef int array_of_int[3]; typedef const array_of_int const_array_of_int; const_array_of_int *ptr_to_const_array; void function_0 () { ptr_to_array_of_consts = ptr_to_const_array; /* gets bogus warning */ ptr_to_const_array = ptr_to_array_of_consts; /* gets bogus warning */ } /* The following example is taken from ANSI 3.5.3 */ typedef int A[2][3]; const A a = {{4, 5, 6}, {7, 8, 9}}; int *pi; void function_1 () { pi = a[0]; // ERROR - a[0] has type "const int *" } int main () { return 0; }