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From: Sebastian Huber <sh@sourceware.org> To: newlib-cvs@sourceware.org Subject: [newlib-cygwin] Fix _REENT_EMERGENCY() if TLS is enabled Date: Wed, 26 Apr 2023 09:56:06 +0000 (GMT) [thread overview] Message-ID: <20230426095606.E5C7E3858CDA@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=e301a74a6f111df4553b50b813a589589d1708b1 commit e301a74a6f111df4553b50b813a589589d1708b1 Author: Sebastian Huber <sebastian.huber@embedded-brains.de> Date: Wed Apr 26 08:23:04 2023 +0200 Fix _REENT_EMERGENCY() if TLS is enabled If the thread-local storage (TLS) support was enabled, the _REENT_EMERGENCY() object had the wrong size. It must be a buffer of length _REENT_EMERGENCY_SIZE and not just a single character. Diff: --- newlib/libc/include/sys/reent.h | 2 +- newlib/libc/stdio/tmpnam.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/newlib/libc/include/sys/reent.h b/newlib/libc/include/sys/reent.h index 6d8b005b2..c71f75dbc 100644 --- a/newlib/libc/include/sys/reent.h +++ b/newlib/libc/include/sys/reent.h @@ -812,7 +812,7 @@ extern _Thread_local int _tls_cvtlen; #define _REENT_CVTLEN(_ptr) (_tls_cvtlen) extern _Thread_local void (*_tls_cleanup)(struct _reent *); #define _REENT_CLEANUP(_ptr) (_tls_cleanup) -extern _Thread_local char _tls_emergency; +extern _Thread_local char _tls_emergency[_REENT_EMERGENCY_SIZE]; #define _REENT_EMERGENCY(_ptr) (_tls_emergency) extern _Thread_local int _tls_errno; #define _REENT_ERRNO(_ptr) (_tls_errno) diff --git a/newlib/libc/stdio/tmpnam.c b/newlib/libc/stdio/tmpnam.c index 51dfd1cea..dc04cf3f6 100644 --- a/newlib/libc/stdio/tmpnam.c +++ b/newlib/libc/stdio/tmpnam.c @@ -84,7 +84,7 @@ The global pointer <<environ>> is also required. #ifdef _REENT_THREAD_LOCAL _Thread_local int _tls_inc; -_Thread_local char _tls_emergency; +_Thread_local char _tls_emergency[_REENT_EMERGENCY_SIZE]; #endif /* Try to open the file specified, if it can't be opened then try
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