[Bug string/19261] New: test-string.h questionable pointer arithmetic

["fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19261

            Bug ID: 19261
           Summary: test-string.h questionable pointer arithmetic
           Product: glibc
           Version: 2.23
            Status: NEW
          Severity: minor
          Priority: P3
         Component: string
          Assignee: unassigned at sourceware dot org
          Reporter: fweimer at redhat dot com
  Target Milestone: ---
             Flags: security-

test-string.h contains this:

typedef struct
{
  const char *name;
  void (*fn) (void);
  long test;
} impl_t;
extern impl_t __start_impls[], __stop_impls[];
â
          for (impl = __start_impls; impl < __stop_impls; ++impl)       \

I don't think C gives a well-defined result for that because __start_impls and
__stop_impls are separate objects.

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