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branches/zip: Silence most GCC 4.2.1 warnings about const pointers.

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For some reason, GCC 4.2.1 ignores casts (for removing constness)
in calls to inline functions.

page_align(), ut_align_down(): Make the parameter const void*, but still
return a non-const pointer.  This is ugly, but these functions cannot be
replaced with a const-preserving macro in a portable way, given that
the pointer argument is not always pointing to bytes.

buf_block_get_page_zip(): Implement as a const-preserving macro.

buf_frame_get_page_zip(), buf_block_align(): Add const qualifiers.

lock_rec_get_prev(): Silence GCC 4.2.1 warnings.

mlog_write_initial_log_record(), mlog_write_initial_log_record_fast(),
mtr_memo_contains(): Add const qualifier to the pointer.

page_header_get_ptr(): Rewrite as page_header_get_offs(), and
implement as a macro that calls this function.
This commit is contained in:
marko
2007-10-03 12:22:29 +00:00
parent e9507ea69b
commit 2ddbc912e7
20 changed files with 146 additions and 149 deletions
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6
include/ut0byte.h
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@@ -226,9 +226,9 @@ UNIV_INLINE
void*
ut_align_down(
/*==========*/
/* out: aligned pointer */
void* ptr, /* in: pointer */
ulint align_no) /* in: align by this number */
/* out: aligned pointer */
const void* ptr, /* in: pointer */
ulint align_no) /* in: align by this number */
__attribute__((const));
/*************************************************************
The following function computes the offset of a pointer from the nearest