bpo-38156: Fix compiler warning in PyOS_StdioReadline() (pythonGH-21721)

vstinner · shihai1991 · commit 012eaf5f1a05 · 2020-08-21T01:06:37.000+08:00
incr cannot be larger than INT_MAX: downcast to int explicitly.
diff --git a/Parser/myreadline.c b/Parser/myreadline.c
@@ -317,7 +317,7 @@ PyOS_StdioReadline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
             return NULL;
         }
         p = pr;
-        int err = my_fgets(tstate, p + n, incr, sys_stdin);
+        int err = my_fgets(tstate, p + n, (int)incr, sys_stdin);
         if (err == 1) {
             // Interrupt
             PyMem_RawFree(p);

Original file line number	Diff line number	Diff line change
`@@ -317,7 +317,7 @@ PyOS_StdioReadline(FILE sys_stdin, FILE sys_stdout, const char *prompt)`
`317`	`317`	`return NULL;`
`318`	`318`	`}`
`319`	`319`	`p = pr;`
`320`		`- int err = my_fgets(tstate, p + n, incr, sys_stdin);`
	`320`	`+ int err = my_fgets(tstate, p + n, (int)incr, sys_stdin);`
`321`	`321`	`if (err == 1) {`
`322`	`322`	`// Interrupt`
`323`	`323`	`PyMem_RawFree(p);`