[compiler-rt] Remove struct_termio_sz from sanitizer_platform_limits_posix.cpp

[trcrsired]

Fix #137436

The struct termio and its associated code have been removed from glibc as they are considered obsolete. This change removes the corresponding code in compiler-rt to maintain compatibility.

Additionally, the check for struct_termio_sz specific to Android has been removed. There is no guarantee that the Linux kernel or Google will continue supporting struct termio, and its removal aligns with the deprecation in glibc.

Reference: glibc commit e04afb71771710cdc6025fe95908f5f17de7b72d

bminor/glibc@e04afb7

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[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: cqwrteur (trcrsired)

Changes

Fix #137436

The struct termio and its associated code have been removed from glibc as they are considered obsolete. This change removes the corresponding code in compiler-rt to maintain compatibility.

Additionally, the check for struct_termio_sz specific to Android has been removed. There is no guarantee that the Linux kernel or Google will continue supporting struct termio, and its removal aligns with the deprecation in glibc.

Reference: glibc commit e04afb71771710cdc6025fe95908f5f17de7b72d

bminor/glibc@e04afb7

---

Full diff: https://github.com/llvm/llvm-project/pull/137440.diff

1 Files Affected:

• (modified) compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp (-3)

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
index b4d87ab6228e5..7a89bf1c74985 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
@@ -494,9 +494,6 @@ unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
   unsigned struct_input_id_sz = sizeof(struct input_id);
   unsigned struct_mtpos_sz = sizeof(struct mtpos);
   unsigned struct_rtentry_sz = sizeof(struct rtentry);
-#if SANITIZER_GLIBC || SANITIZER_ANDROID
-  unsigned struct_termio_sz = sizeof(struct termio);
-#endif
   unsigned struct_vt_consize_sz = sizeof(struct vt_consize);
   unsigned struct_vt_sizes_sz = sizeof(struct vt_sizes);
   unsigned struct_vt_stat_sz = sizeof(struct vt_stat);

[thesamesam]

There's #137403 already.