perf tools: Fix old GCC build error in trace-event-parse.c:parse_proc_kallsyms()
Old GCC (4.1) does not see through the code flow of parse_proc_kallsyms() and gets confused about the status of 'fmt': util/trace-event-parse.c: In function ‘parse_proc_kallsyms’: util/trace-event-parse.c:189: warning: ‘fmt’ may be used uninitialized in this function make: *** [util/trace-event-parse.o] Error 1 Help out GCC by initializing 'fmt' to NULL. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20130912131649.GC23826@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -186,7 +186,7 @@ void parse_proc_kallsyms(struct pevent *pevent,
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char *next = NULL;
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char *addr_str;
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char *mod;
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char *fmt;
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char *fmt = NULL;
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line = strtok_r(file, "\n", &next);
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while (line) {
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