Rich Felker
e738b8cbe6
this reverts commit 2c1f8fd5da. without
the _Noreturn attribute, the compiler cannot use asserts to perform
reachability/range analysis. this leads to missed optimizations and
spurious warnings.
the original backtrace problem that prompted the removal of _Noreturn
was not clearly documented at the time, but it seems to happen only
when libc was built without -g, which also breaks many other
backtracing cases.
10 lines
243 B
C
10 lines
243 B
C
#include <stdio.h>
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#include <stdlib.h>
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_Noreturn void __assert_fail(const char *expr, const char *file, int line, const char *func)
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{
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fprintf(stderr, "Assertion failed: %s (%s: %s: %d)\n", expr, file, func, line);
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fflush(NULL);
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abort();
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}
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