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* c-tree.texi: Document representation of wide strings.

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From-SVN: r40998
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Joseph Myers 2001-04-02 08:39:39 +01:00 committed by Joseph Myers
parent 6c13e19358
commit c6955d8518
2 changed files with 13 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
2001-04-02 Joseph S. Myers <jsm28@cam.ac.uk>
* c-tree.texi: Document representation of wide strings.
2001-04-01 Richard Henderson <rth@redhat.com>
* except.h (expand_builtin_dwarf_fp_regnum): Declare.

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gcc/c-tree.texi
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@ -1868,7 +1868,15 @@ embedded @code{NUL} characters. Therefore, the
@code{TREE_STRING_LENGTH} includes the trailing @code{NUL} if it is
present.
FIXME: How are wide strings represented?
For wide string constants, the @code{TREE_STRING_LENGTH} is the number
of wide characters in the string, and the @code{TREE_STRING_POINTER}
points to an array of the bytes of the string, as represented on the
target system (that is, as integers in the target endianness). Wide and
non-wide string constants are distinguished only by the @code{TREE_TYPE}
of the @code{STRING_CST}.
FIXME: The formats of string constants are not well-defined when the
target system bytes are not the same width as host system bytes.
@item PTRMEM_CST
These nodes are used to represent pointer-to-member constants. The