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libavutil/opt: Small bugfix in example. 

Fix const corectness and zero init the struct. This example code would actually crash when initializing string.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 69630f4d30)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Kacper Michajłow 2016-07-23 21:43:06 +02:00 committed by Michael Niedermayer
parent 08ab94e6a6
commit b0453449fd
1 changed files with 2 additions and 2 deletions
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4
libavutil/opt.h
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@ -57,7 +57,7 @@
* The following example illustrates an AVOptions-enabled struct: * The following example illustrates an AVOptions-enabled struct:
* @code * @code
* typedef struct test_struct { * typedef struct test_struct {
* AVClass *class; * const AVClass *class;
* int int_opt; * int int_opt;
* char *str_opt; * char *str_opt;
* uint8_t *bin_opt; * uint8_t *bin_opt;
@ -95,7 +95,7 @@
* @code * @code
* test_struct *alloc_test_struct(void) * test_struct *alloc_test_struct(void)
* { * {
* test_struct *ret = av_malloc(sizeof(*ret)); * test_struct *ret = av_mallocz(sizeof(*ret));
* ret->class = &test_class; * ret->class = &test_class;
* av_opt_set_defaults(ret); * av_opt_set_defaults(ret);
* return ret; * return ret;