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| author | Michael Brown | 2006-12-19 23:33:42 +0100 |
|---|---|---|
| committer | Michael Brown | 2006-12-19 23:33:42 +0100 |
| commit | 19e1d674d301b5db97462f005cb1d57d99ff9797 (patch) | |
| tree | 7f872e58426db3095b721297a52a6c407386138a /src/core/vsprintf.c | |
| parent | Start of generic editable string support (diff) | |
| download | ipxe-19e1d674d301b5db97462f005cb1d57d99ff9797.tar.gz ipxe-19e1d674d301b5db97462f005cb1d57d99ff9797.tar.xz ipxe-19e1d674d301b5db97462f005cb1d57d99ff9797.zip | |
Catch attempts to print NULL strings
Diffstat (limited to 'src/core/vsprintf.c')
| -rw-r--r-- | src/core/vsprintf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/core/vsprintf.c b/src/core/vsprintf.c index 42bd510b..e225d48c 100644 --- a/src/core/vsprintf.c +++ b/src/core/vsprintf.c @@ -219,6 +219,8 @@ size_t vcprintf ( struct printf_context *ctx, const char *fmt, va_list args ) { cputchar ( ctx, va_arg ( args, unsigned int ) ); } else if ( *fmt == 's' ) { ptr = va_arg ( args, char * ); + if ( ! ptr ) + ptr = "<NULL>"; } else if ( *fmt == 'p' ) { intptr_t ptrval; |