https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21161
Paul Eggert <eggert at cs dot ucla.edu> changed:
What |Removed |Added
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CC| |eggert at cs dot ucla.edu
--- Comment #26 from Paul Eggert <eggert at cs dot ucla.edu> ---
Created attachment 55122
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55122&action=edit
GCC bug 21161 as triggered by GNU diffutils
I ran into a similar problem when compiling GNU diffutils with gcc (GCC) 13.1.1
20230511 (Red Hat 13.1.1-2) on x86.64. Here is a stripped-down illustrating of
the diffutils problem. Compile the attached program with:
gcc -O2 -W -S pr21161.i
The output, which is a false positive, is:
pr21161.i: In function ‘find_dir_file_pathname’:
pr21161.i:22:15: warning: variable ‘match’ might be clobbered by ‘longjmp’ or
‘vfork’ [-Wclobbered]
22 | char const *match = file;
| ^~~~~
