https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62095
Bug ID: 62095
Summary: gcc: error: unrecognized command line option
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: dilyan.palauzov at aegee dot org
When I type
gcc -WZ
I get
gcc: error: unrecognized command line option ‘-WZ’
gcc: fatal error: no input files
compilation terminated.
But when I type
gcc -Wno-Z
I get just
gcc: fatal error: no input files
compilation terminated.
I expect in the second case to see "unrecognized command line option "-Wno-Z"
Motivation:
valgrind uncorrectly detects in configure.ac, if the compiler supports
-Wno-tautological-compare by running gcc -Wno-tautological-compare, which
prints no error => compiler supports -Wno-tautological-compare . However,
during compiling valgrind, gcc manages to output somehow the message, that
"-Wno-tautological-compare " is not supported, but I cannot write a simple case
where gcc complains about -Wno-tautological-compare .
