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汇总:2026-09-20 全量 open issue 核验 —— 关闭十条、三条实测仍复现、其余逐条读数

Status: Open.

#677 In mcpp-community/mcpp;

· speak-agent opened on Sep 20, 2026

[c-abi] Windows + presents=posix: __unix__ is defined but compat.* still fails (18 packages); engine vs. upstream code assumption

Status: Open.

#674 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 18, 2026

ci-macos xcode-27: ld64.lld cannot parse arm64e.x1 in either available SDK (upstream, tracked)

Status: Open.

#669 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 18, 2026

GCC self-host: internal compiler error importing mcpp.targetside from a new consumer, under parallel build

Status: Open.

#667 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 17, 2026

Clang-built mcpp SIGSEGVs in ELF runtime inspection (validate_changed_artifacts); GCC-built does not

Status: Open.

#666 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 17, 2026

clang 23.1.0: MSVC STL std module fails with reference to 'align_val_t' is ambiguous (fixed in 23.1.1, llvm/llvm-project#218152)

upstream-bug根因在上游(编译器/构建工具/依赖),mcpp 只能绕过或声明为缺口根因在上游(编译器/构建工具/依赖),mcpp 只能绕过或声明为缺口

Status: Open.

#640 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 14, 2026

clang 22: a builtin first looked up in a module partition's purview becomes module-owned; importing it beside a GMF use is 'ambiguous' (macOS assert / __builtin_expect)

upstream-bug根因在上游(编译器/构建工具/依赖),mcpp 只能绕过或声明为缺口根因在上游(编译器/构建工具/依赖),mcpp 只能绕过或声明为缺口

Status: Open.

#632 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 13, 2026

mcpp run: a script artefact whose interpreter is missing fails without naming the remedy

Status: Open.

#621 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 11, 2026

问题备注

Status: Open.

#611 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 11, 2026

备忘:2026-09-04 生态批次之后仍未闭合的四条(armv7a 无 C 库/板级包、riscv32 无后端、ninja 空转未定因、armv7a 无 preemption)

Status: Open.

#558 In mcpp-community/mcpp;

· Sunrisepeak opened on Sep 4, 2026

宿主 -L 链上的库与运行期加载的库可以是两份不同构建,而构建期一言不发

Status: Open.

#537 In mcpp-community/mcpp;

· Sunrisepeak opened on Aug 30, 2026

host tool 链接 shared 依赖后无法运行:.so 未被 stage 到工具旁边(且会被 subos 同名库悄悄顶上)

Status: Open.

#535 In mcpp-community/mcpp;

· Sunrisepeak opened on Aug 30, 2026