E.g. in nss-resolve it is still useful to print the location of the error: src/test/test-nss.c:231: dlsym(0x0x1dc6fb0, _nss_resolve_gethostbyname2_r) → 0x0x7fdbfc53f626 (string):1:40: JSON field ifindex is out of bounds for an interface index. I opted to use a partially duplicated if condition to avoid nesting. It's nice to have the log calls vertically aligned. The compiler will optimize this nicely.
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