STINNER Victor <vstin...@python.org> added the comment:
The following C++ code fails to build:
---
#ifdef __cplusplus
# include <cstdlib>
#else
# include <stdlib.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
int x;
int y;
char array[];
} mystruct_t;
#ifdef __cplusplus
}
#endif
int main()
{
size_t size = 2;
mystruct_t *obj = (mystruct_t *)malloc(sizeof(mystruct_t) - 1 + size);
obj->array[0] = 'O';
obj->array[1] = 'K';
free(obj);
return 0;
}
---
Error:
---
$ LANG= g++ -pedantic -Werror x.cpp
x.c:14:10: error: ISO C++ forbids flexible array member 'array'
[-Werror=pedantic]
14 | char array[];
| ^~~~~
cc1plus: all warnings being treated as errors
---
----------
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue40120>
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