I was getting occasional 'deallocating None' aborts when using the new C
parser. The following patch seems to fix them, although I did not study
the code enough to see which Py_None values were actually getting
returned. Surely I am inflating the refcount on None, and I don't know
if that will cause a problem or overflow.
Anyway, here's the patch, made directly to the .c output since I didn't
have a way to rebuild the parser:
Index: src/bison/SPARQLParser.c
===================================================================
--- src/bison/SPARQLParser.c (revision 863)
+++ src/bison/SPARQLParser.c (working copy)
@@ -1763,6 +1763,7 @@
/* from SPARQL.bgen, line 96
* Prolog:
*/
+ Py_INCREF(Py_None);
yyval = Py_None;
if (self->verbose) {
fprintf(stderr, "--Prolog(");
@@ -1989,6 +1990,7 @@
/* from SPARQL.bgen, line 225
* VAR_REFERENCES: ASTERISK
*/
+ Py_INCREF(Py_None);
yyval = Py_None;
if (self->verbose) {
fprintf(stderr, "--VAR_REFERENCES(");
@@ -4373,6 +4375,7 @@
/* from SPARQL.bgen, line 96
* Prolog:
*/
+ Py_INCREF(Py_None);
yyval = Py_None;
if (self->verbose) {
fprintf(stderr, "--Prolog(");
@@ -4599,6 +4602,7 @@
/* from SPARQL.bgen, line 225
* VAR_REFERENCES: ASTERISK
*/
+ Py_INCREF(Py_None);
yyval = Py_None;
if (self->verbose) {
fprintf(stderr, "--VAR_REFERENCES(");
@@ -6964,6 +6968,7 @@
/* from SPARQL.bgen, line 96
* Prolog:
*/
+ Py_INCREF(Py_None);
yyval = Py_None;
if (self->verbose) {
fprintf(stderr, "--Prolog(");
@@ -7190,6 +7195,7 @@
/* from SPARQL.bgen, line 225
* VAR_REFERENCES: ASTERISK
*/
+ Py_INCREF(Py_None);
yyval = Py_None;
if (self->verbose) {
fprintf(stderr, "--VAR_REFERENCES(");
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