https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104308
Bug ID: 104308
Summary: no location info provided for
[-Wanalyzer-use-of-uninitialized-value] warnings
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: analyzer
Assignee: dmalcolm at gcc dot gnu.org
Reporter: kdudka at redhat dot com
Target Milestone: ---
I can see new (technically valid) analyzer warnings with gcc-12 on Fedora
rawhide without any location information being provided. This makes the output
difficult to use for csdiff utilities as well as human reviewers:
$ printf '#include <string.h>\nint main() { char s[5]; memmove(s, s + 1, 2);
}\n' | gcc -fanalyzer -fdiagnostics-path-format=separate-events -c -xc -
In function ‘main’:
cc1: warning: use of uninitialized value ‘*(short unsigned int *)&s + 1’
[CWE-457] [-Wanalyzer-use-of-uninitialized-value]
cc1: note: (1) use of uninitialized value ‘*(short unsigned int *)&s + 1’ here
The same command produces no output with gcc-11.2.1 though.
