utils: Use fprintf to print the assertion and generate a backtrace
This is changing the semantic of the assert. The regression tests
now either need to check the stderr result, the exit status or print
a message when all tests are completed.
This is not that bad as the osmo_generate_backtrace is printing to
the stdout right now.
diff --git a/include/osmocom/core/utils.h b/include/osmocom/core/utils.h
index 8f7bee3..f8e6fc9 100644
--- a/include/osmocom/core/utils.h
+++ b/include/osmocom/core/utils.h
@@ -53,7 +53,8 @@
#define OSMO_ASSERT(exp) \
if (!(exp)) { \
- printf("Assert failed %s %s:%d\n", #exp, __FILE__, __LINE__); \
+ fprintf(stderr, "Assert failed %s %s:%d\n", #exp, __FILE__, __LINE__); \
+ osmo_generate_backtrace(); \
abort(); \
}