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Port better to C++ platforms

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* data/skeletons/yacc.c (YYPTRDIFF_T, YYPTRDIFF_MAXIMUM):
Default to long, not int.
(yy_lac_stack_realloc, yy_lac, yytnamerr, yyparse):
Avoid casts to YYPTRDIFF_T that were masking the problem.
This commit is contained in:
Paul Eggert
2019-10-06 11:58:10 -07:00
parent beceb2fa93
commit 6373b90fc8
2 changed files with 10 additions and 15 deletions
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13
TODO
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@@ -107,15 +107,10 @@ name they have in gcc, clang, etc. Likewise for the complain_* series of
functions.
* Modernization
Remove some casts made for old compilers, such as Clang++ 3.3 and 3.4 when
compiling yacc.c code:
YYPTRDIFF_T yysize = (YYPTRDIFF_T) (yyssp - yyss + 1);
YYPTRDIFF_T yysize_old =
*yytop == yytop_empty ? 0 : (YYPTRDIFF_T) (*yytop - *yybottom + 1);
YYPTRDIFF_T yysize = (YYPTRDIFF_T) (yyesp - *yyes + 1);
Fix data/skeletons/yacc.c so that it defines YYPTRDIFF_T properly for modern
and older C++ compilers. Currently the code defaults to defining it to
'long' for non-GCC compilers, but it should use the proper C++ magic to
define it to the same type as the C ptrdiff_t type.
* Completion
Several features are not available in all the backends.