[Bug libstdc++/101211] [12 regression] 17_intro/names.cc fails

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101211

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Christophe Lyon from comment #4)
> It works for aarch64-linux-gnu, but fails for aarch64-elf (with newlib):
> FAIL: 17_intro/names.cc (test for excess errors)
> Excess errors:
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:194:
> error: expected ')' before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:195:
> error: expected ')' before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:196:
> error: expected ')' before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:197:
> error: expected ')' before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:198:
> error: expected ')' before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:199:
> error: expected ')' before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:200:
> error: expected ')' before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/math.h:201:
> error: expected ')' before ';' token

I think that's due to bugs in newlib's <math.h> on these lines:


extern int __isinff (float x);
extern int __isinfd (double x);
extern int __isnanf (float x);
extern int __isnand (double x);
extern int __fpclassifyf (float x);
extern int __fpclassifyd (double x);
extern int __signbitf (float x);
extern int __signbitd (double x);

Those should use __x not x.

> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/time.h:110:
> error: expected unqualified-id before ';' token
> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/time.h:110:
> error: expected ')' before ';' token

Non-reserved names in this newlib type:

typedef struct __tzrule_struct
{
  char ch;
  int m;
  int n;
  int d;
  int s;
  time_t change;
  long offset; /* Match type of _timezone. */
} __tzrule_type;

I'll have to adjust the test for that.


> /aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/aarch64-none-elf/include/inttypes.h:
> 323: error: expected ')' before ';' token

This is a newlib bug:
extern intmax_t  imaxabs(intmax_t j);

It should be using __j here, and similarly for the next line:
extern imaxdiv_t imaxdiv(intmax_t numer, intmax_t denomer);