Description

cdce8p

opened on Apr 21, 2026

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Bug report

Bug description:

Set ENABLE_SPECIFICATION = 0 and run make.

cpython/Include/internal/pycore_code.h

Line 301 in d206d42

#define ENABLE_SPECIALIZATION 1

Python/specialize.c:119:31: error: use of undeclared identifier 'opcode'
  119 |         i += _PyOpcode_Caches[opcode];
      |                               ^
1 error generated.
make: *** [Python/specialize.o] Error 1

The bug was introduced in 879c85f, released with 3.15.0a8.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

• gh-148825: Fix build error if specialization is disabled #148826
• [3.15] gh-148825: Fix build error if specialization is disabled (GH-148826) #152206

Activity

1. cdce8p

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Apr 21, 2026
2. picnixz

   added

   buildThe build process and cross-buildThe build process and cross-build

   3.15bugs and security fixesbugs and security fixes

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   on Apr 21, 2026
3. JelleZijlstra

   added 2 commits that reference this issue on Jun 25, 2026

   gh-148825: Fix build error if specialization is disabled (#148826)

   56ae0b8

   [3.15] gh-148825: Fix build error if specialization is disabled (GH-1…

   eaf4d73
4. cdce8p

   closed this as completedon Jun 25, 2026

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