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[committed] update native_encode_expr description

Message ID d27012ec-7e84-7807-dbed-811365fead2e@gmail.com
State New
Headers show
Series [committed] update native_encode_expr description | expand

Commit Message

Martin Sebor Aug. 18, 2020, 3:56 p.m. UTC 
I committed the change below updating and completing the description
of the native_encode_expr function.

Martin


  int
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Patch

diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 9fc4c2a06fb..7c4d1eff215 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -7875,11 +7875,12 @@  native_encode_string (const_tree expr, unsigned 
char *ptr, int len, int off)
  }


-/* Subroutine of fold_view_convert_expr.  Encode the INTEGER_CST,
-   REAL_CST, COMPLEX_CST or VECTOR_CST specified by EXPR into the
-   buffer PTR of length LEN bytes.  If PTR is NULL, don't actually store
-   anything, just do a dry run.  If OFF is not -1 then start
-   the encoding at byte offset OFF and encode at most LEN bytes.
+/* Subroutine of fold_view_convert_expr.  Encode the INTEGER_CST, REAL_CST,
+   FIXED_CST, COMPLEX_CST, STRING_CST, or VECTOR_CST specified by EXPR into
+   the buffer PTR of size LEN bytes.  If PTR is NULL, don't actually store
+   anything, just do a dry run.  Fail either if OFF is -1 and LEN isn't
+   sufficient to encode the entire EXPR, or if OFF is out of bounds.
+   Otherwise, start at byte offset OFF and encode at most LEN bytes.
     Return the number of bytes placed in the buffer, or zero upon 
failure.  */