Handle NULL.

ZeroIntensity · ZeroIntensity · commit c344ad7c2e49 · 2025-04-13T18:32:41.000-04:00
diff --git a/Python/traceback.c b/Python/traceback.c
@@ -1236,9 +1236,10 @@ _Py_backtrace_symbols_fd(int fd, void *const *array, Py_ssize_t size)
                 sign = '-';
                 offset = info[i].dli_saddr - array[i];
             }
+            const char *symbol_name = info[i].dli_sname != NULL ? info[i].dli_sname : "";
             dprintf(fd, "  Binary file \"%s\", at %s%c%#tx [%p]\n",
                     info[i].dli_fname,
-                    info[i].dli_sname,
+                    symbol_name,
                     sign, offset, array[i]);
         }
     }

Original file line number	Diff line number	Diff line change
`@@ -1236,9 +1236,10 @@ _Py_backtrace_symbols_fd(int fd, void const array, Py_ssize_t size)`
`1236`	`1236`	`sign = '-';`
`1237`	`1237`	`offset = info[i].dli_saddr - array[i];`
`1238`	`1238`	`}`
	`1239`	`+ const char *symbol_name = info[i].dli_sname != NULL ? info[i].dli_sname : "";`
`1239`	`1240`	`dprintf(fd, " Binary file \"%s\", at %s%c%#tx [%p]\n",`
`1240`	`1241`	`info[i].dli_fname,`
`1241`		`- info[i].dli_sname,`
	`1242`	`+ symbol_name,`
`1242`	`1243`	`sign, offset, array[i]);`
`1243`	`1244`	`}`
`1244`	`1245`	`}`