mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-10 00:43:41 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 18

[3.12] GH-112215: Backport C recursion changes (GH-115083)

Browse source
This commit is contained in:
Mark Shannon 2024-02-13 09:45:59 +00:00 • committed by GitHub
parent a30bb080dc
commit 4d87832d87
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
14 changed files with 65 additions and 46 deletions
Download patch file Download diff file Expand all files Collapse all files

9
Python/symtable.c
View file

@ -281,11 +281,6 @@ symtable_new(void)
return NULL;
}
/* Using a scaling factor means this should automatically adjust when
the recursion limit is adjusted for small or large C stack allocations.
*/
#define COMPILER_STACK_FRAME_SCALE 2
struct symtable *
_PySymtable_Build(mod_ty mod, PyObject *filename, PyFutureFeatures *future)
{
@ -312,9 +307,9 @@ _PySymtable_Build(mod_ty mod, PyObject *filename, PyFutureFeatures *future)
}
/* Be careful here to prevent overflow. */
int recursion_depth = C_RECURSION_LIMIT - tstate->c_recursion_remaining;
starting_recursion_depth = recursion_depth * COMPILER_STACK_FRAME_SCALE;
starting_recursion_depth = recursion_depth;
st->recursion_depth = starting_recursion_depth;
st->recursion_limit = C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
st->recursion_limit = C_RECURSION_LIMIT;
/* Make the initial symbol information gathering pass */
if (!symtable_enter_block(st, &_Py_ID(top), ModuleBlock, (void *)mod, 0, 0, 0, 0)) {