steakhal added inline comments.
================
Comment at: clang/test/Analysis/Inputs/std-c-library-functions.h:1-2
+typedef typeof(sizeof(int)) size_t;
+typedef signed long ssize_t;
+typedef struct {
----------------
balazske wrote:
> steakhal wrote:
> > `ssize_t`'s size should match the size of `size_t`. In this implementation,
> > it would be true only if `size_t` is `long`.
> >
> I could not find a working way of defining the type in that way (there is no
> `__sizte_t`). The current definition should work well in the test code, the
> property of being the same size is supposedly not used in the tests. The
> previous definition was not better than this (and different in different
> places).
I think [[
https://github.com/llvm/llvm-project/blob/main/clang/test/Sema/format-strings-scanf.c#L7-L15
| clang/test/Sema/format-strings-scanf.c ]] uses something like this:
```lang=C++
typedef __SIZE_TYPE__ size_t;
#define __SSIZE_TYPE__ \
__typeof__(_Generic((__SIZE_TYPE__)0, \
unsigned long long int : (long long int)0, \
unsigned long int : (long int)0, \
unsigned int : (int)0, \
unsigned short : (short)0, \
unsigned char : (signed char)0))
typedef __SSIZE_TYPE__ ssize_t;
```
================
Comment at: clang/test/Analysis/Inputs/std-c-library-functions.h:31
+int getchar(void);
+size_t fread(void *restrict, size_t, size_t, FILE *restrict);
+size_t fwrite(const void *restrict, size_t, size_t, FILE *restrict);
----------------
steakhal wrote:
> `restrict` will only work if this header is included from `C` files. In `C++`
> files we will have a surprising behavior.
Ah, now I see a better way of doing this from [[
https://github.com/llvm/llvm-project/blob/main/clang/test/Analysis/Inputs/system-header-simulator.h#L8-L10
| clang/test/Analysis/Inputs/system-header-simulator.h ]]:
```lang=C++
#ifdef __cplusplus
#define restrict /*restrict*/
#endif
```
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D149158/new/
https://reviews.llvm.org/D149158
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