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re PR libbacktrace/87529 (libbacktrace API forces users to have memory leaks) 

PR libbacktrace/87529
	* backtrace.h: Document that backtrace_create_state should be
	called only once.

From-SVN: r264871
This commit is contained in:
Ian Lance Taylor 2018-10-05 14:09:07 +00:00 committed by Ian Lance Taylor
parent f48bd5e43a
commit a2a86641b7
2 changed files with 13 additions and 1 deletions
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6
libbacktrace/ChangeLog
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@ -1,3 +1,9 @@
2018-10-05 Ian Lance Taylor <iant@golang.org>
PR libbacktrace/87529
* backtrace.h: Document that backtrace_create_state should be
called only once.
2018-08-05 Iain Buclaw <ibuclaw@gdcproject.org> 2018-08-05 Iain Buclaw <ibuclaw@gdcproject.org>
* configure.ac: Move define of HAVE_ZLIB into check for -lz. * configure.ac: Move define of HAVE_ZLIB into check for -lz.

8
libbacktrace/backtrace.h
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@ -92,7 +92,13 @@ typedef void (*backtrace_error_callback) (void *data, const char *msg,
use appropriate atomic operations. If THREADED is zero the state use appropriate atomic operations. If THREADED is zero the state
may only be accessed by one thread at a time. This returns a state may only be accessed by one thread at a time. This returns a state
pointer on success, NULL on error. If an error occurs, this will pointer on success, NULL on error. If an error occurs, this will
call the ERROR_CALLBACK routine. */ call the ERROR_CALLBACK routine.
Calling this function allocates resources that can not be freed.
There is no backtrace_free_state function. The state is used to
cache information that is expensive to recompute. Programs are
expected to call this function at most once and to save the return
value for all later calls to backtrace functions. */
extern struct backtrace_state *backtrace_create_state ( extern struct backtrace_state *backtrace_create_state (
const char *filename, int threaded, const char *filename, int threaded,