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yacc.c: work around warnings from Clang++ 3.3 and 3.4

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When we run the test suite with these C++ compilers to compile C code,
we get:

    239. synclines.at:440: testing syncline escapes: yacc.c ...
    ../../tests/synclines.at:440: $CC $CFLAGS $CPPFLAGS \"\\\"\".c -o \"\\\"\" ||
              exit 77
    stderr:
    stdout:
    ../../tests/synclines.at:440: COLUMNS=1000; export COLUMNS;  bison --color=no -fno-caret  -o \"\\\"\".c \"\\\"\".y
    ../../tests/synclines.at:440: $CC $CFLAGS $CPPFLAGS  $LDFLAGS -o \"\\\"\" \"\\\"\".c $LIBS
    stderr:
    "\"".c:1102:41: error: implicit conversion loses integer precision: 'long' to 'int' [-Werror,-Wshorten-64-to-32]
          YYPTRDIFF_T yysize = yyssp - yyss + 1;
                      ~~~~~~   ~~~~~~~~~~~~~^~~
    1 error generated.

    193. conflicts.at:545: testing parse.error=verbose and consistent errors: lr.type=canonical-lr parse.lac=full ...
    input.c:737:75: error: implicit conversion loses integer precision: 'long' to 'int'
                           [-Werror,-Wshorten-64-to-32]
      YYPTRDIFF_T yysize_old = *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
                  ~~~~~~~~~~                               ~~~~~~~~~~~~~~~~~~~^~~
    input.c:901:48: error: implicit conversion loses integer precision: 'long' to 'int'
                           [-Werror,-Wshorten-64-to-32]
                YYPTRDIFF_T yysize = yyesp - *yyes + 1;
                            ~~~~~~   ~~~~~~~~~~~~~~^~~

* data/skeletons/yacc.c: Add more casts.
This commit is contained in:
Akim Demaille
2019-10-05 17:35:40 +02:00
parent 4246cd81df
commit 5973d763c0
1 changed files with 4 additions and 3 deletions
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7
data/skeletons/yacc.c
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@@ -856,7 +856,8 @@ yy_lac_stack_realloc (YYPTRDIFF_T *yycapacity, YYPTRDIFF_T yyadd,
yy_state_num *yybottom_no_free,
yy_state_num **yytop, yy_state_num *yytop_empty)
{
YYPTRDIFF_T yysize_old = *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
YYPTRDIFF_T yysize_old =
*yytop == yytop_empty ? 0 : (YYPTRDIFF_T) (*yytop - *yybottom + 1);
YYPTRDIFF_T yysize_new = yysize_old + yyadd;
if (*yycapacity < yysize_new)
{
@@ -1023,7 +1024,7 @@ yy_lac (yy_state_num *yyesa, yy_state_num **yyes,
YYDPRINTF ((stderr, " R%d", yyrule - 1));
if (yyesp != yyes_prev)
{
YYPTRDIFF_T yysize = yyesp - *yyes + 1;
YYPTRDIFF_T yysize = (YYPTRDIFF_T) (yyesp - *yyes + 1);
if (yylen < yysize)
{
yyesp -= yylen;
@@ -1534,7 +1535,7 @@ yysetstate:
#else
{
/* Get the current used size of the three stacks, in elements. */
YYPTRDIFF_T yysize = yyssp - yyss + 1;
YYPTRDIFF_T yysize = (YYPTRDIFF_T) (yyssp - yyss + 1);
# if defined yyoverflow
{