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LibBareMetal: Don't try to print characters from a null pointer

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This commit is contained in:
Andreas Kling 2020-03-04 19:26:13 +01:00
parent 783c99516a
commit dfa69b82b4
1 changed files with 4 additions and 0 deletions
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4
Libraries/LibBareMetal/Output/kprintf.cpp
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@ -155,6 +155,8 @@ static void debugger_putch(char*&, char ch)
extern "C" int dbgputstr(const char* characters, int length) extern "C" int dbgputstr(const char* characters, int length)
{ {
if (!characters)
return 0;
for (int i = 0; i < length; ++i) for (int i = 0; i < length; ++i)
debugger_out(characters[i]); debugger_out(characters[i]);
return 0; return 0;
@ -162,6 +164,8 @@ extern "C" int dbgputstr(const char* characters, int length)
extern "C" int kernelputstr(const char* characters, int length) extern "C" int kernelputstr(const char* characters, int length)
{ {
if (!characters)
return 0;
for (int i = 0; i < length; ++i) for (int i = 0; i < length; ++i)
console_out(characters[i]); console_out(characters[i]);
return 0; return 0;