[WIP] bpo-35859: Solution A#12288
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to prevent wreck the stack
MARK_PUSH() didn't protect MARK0 if it was the only available mark.
to indicate that the current operate is in a repeat.
no behavior change, just let the code uses an unified style.
other JUMPs use this code: ctx->in_repeat = (state->repeat != NULL) if (ctx->in_repeat) here use: if (state->repeat) this is OK, because JUMP_ASSERT_NOT can't cross a repeat body.
reduce the size of match_context struct: On 32 bit platform, 36 bytes -> 32 bytes. On 64 bit platform, 72 bytes -> 64 bytes. adjust the order of fields, make it cache friendly.
1,073,741,823 groups should enough for most users. the size of match_context struct: On 32 bit platform: 32 bytes, no change. On 64 bit platform: 64 bytes -> 56 bytes.
* remove SRE_ERROR_RECURSION_LIMIT, this code has not been used for a long time. * return SRE_ERROR_MEMORY when allocate fail, rather than set a MemoryError and return a match failure.
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See PR 12427 |
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https://bugs.python.org/issue35859