[PATCH v2 1/1] sandbox: redefine getc()

[Heinrich Schuchardt]

The sandbox is built with the SDL2 library with invokes the X11 library
which in turn calls getc(). But getc() in glibc is defined as

    int getc(FILE *)

This does not match our definition.

    int getc(void)

The sandbox crashes when called with parameter -l.

Rename our library symbol to be called _u_boot_getc(). To keep the coding
changes minimal use a define on the sandbox only.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
v2:
	apply changes only to the sandbox
---
 include/stdio.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/stdio.h b/include/stdio.h
index aedf374452..43cba1dde5 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -4,6 +4,11 @@
 #include <stdarg.h>
 #include <linux/compiler.h>

+/* The SDL library invokes getc() but this should not be our getc(). */
+#ifdef CONFIG_SANDBOX
+#define getc _u_boot_getc
+#endif
+
 /* stdin */
 int getc(void);
 int tstc(void);
--
2.28.0