glibc/glibc-RHEL-46738-5.patch
2025-02-10 17:29:48 +01:00

27 lines
994 B
Diff

Downstream-only patch to restore the extern ABI for functions
like fprintf that use the FILE * type. Rebuilds of applications
receive ABI change reports because of this installed header change
(indirect subtype change in libabigail terms), and given that
this part of struct _IO_FILE is strictly internal, there is no
need to expose this change to installed headers.
diff --git a/libio/bits/types/struct_FILE.h b/libio/bits/types/struct_FILE.h
index 0e73f89f813ef3b8..f7f756a701ce0e93 100644
--- a/libio/bits/types/struct_FILE.h
+++ b/libio/bits/types/struct_FILE.h
@@ -71,9 +71,14 @@ struct _IO_FILE
struct _IO_FILE *_chain;
int _fileno;
+#ifdef _LIBC
int _flags2:24;
/* Fallback buffer to use when malloc fails to allocate one. */
char _short_backupbuf[1];
+#else
+ /* Legacy ABI for ABI checking outside of glibc. */
+ int _flags2;
+#endif
__off_t _old_offset; /* This used to be _offset but it's too small. */
/* 1+column number of pbase(); 0 is unknown. */