【发布时间】：2017-01-12 13:08:27
【问题描述】：
这条线给我一个分段错误：
g_object_set(G_OBJECT(data.udpsrc), "port", 5000, "caps", caps, NULL);
在哪里
data.udpsrc = gst_element_factory_make("udpsrc", "source");caps = gst_caps_new_empty_simple("application/x-rtp");
这是 gdb 的输出：
Program received signal SIGSEGV, Segmentation fault.
strchr () at ../ports/sysdeps/arm/armv6/strchr.S:28
28 ../ports/sysdeps/arm/armv6/strchr.S: No such file or directory.
(gdb) bt
#0 strchr () at ../ports/sysdeps/arm/armv6/strchr.S:28
#1 0x76e618d8 in g_param_spec_pool_lookup () from /usr/lib/arm-linux-gnueabihf/libgobject-2.0.so.0
#2 0x76e5c6a4 in g_object_set_valist () from /usr/lib/arm-linux-gnueabihf/libgobject-2.0.so.0
#3 0x76e5d00c in g_object_set () from /usr/lib/arm-linux-gnueabihf/libgobject-2.0.so.0
#4 0x00010dc4 in main ()
【问题讨论】：
-
不应该是
g_object_set(data.udpsrc, "port", 5000, "caps", caps, NULL); -
无论有没有 G_OBJECT，我都能得到相同的输出（见 Your first application on Gstreamer website）
-
其中一个指针在预期不是 NULL 时为 NULL。
-
@0andriy 我认为
NULL没问题。它被用作可变参数函数上参数的“终止符”。
标签： c gstreamer raspbian strchr