Hi, is there a recommended way to fail parsing when an action cannot
allocate memory? I could use YYABORT, but the caller could mistake this
for a problem in the input, when it's really an internal problem.
Looking at the generated foo.tab.c file for my parser, I see these
macros:
#define YYACCEPT goto yyacceptlab
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrorlab
Later in the file I see an interesting label that has no corresponding
documented macro:
/*-------------------------------------------------.
| yyexhaustedlab -- memory exhaustion comes here. |
`-------------------------------------------------*/
yyexhaustedlab:
yyerror (scanner, callback, YY_("memory exhausted"));
yyresult = 2;
goto yyreturn;
This seems to be exactly the code I should execute, since it would
inform the caller what went wrong. One option would be for my code to do
something like this:
if (!(bla = malloc(n)))
goto yyexhaustedlab;
I don't like relying on undocumented internals like this, since they're
subject to change across versions of Bison. Any advice?
