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-rw-r--r--src/mesa/main/imports.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c
index a09c497795..9c7ebf9287 100644
--- a/src/mesa/main/imports.c
+++ b/src/mesa/main/imports.c
@@ -920,15 +920,23 @@ _mesa_strncmp( const char *s1, const char *s2, size_t n )
#endif
}
-/** Implemented using _mesa_malloc() and _mesa_strcpy */
+/**
+ * Implemented using _mesa_malloc() and _mesa_strcpy.
+ * Note that NULL is handled accordingly.
+ */
char *
_mesa_strdup( const char *s )
{
- size_t l = _mesa_strlen(s);
- char *s2 = (char *) _mesa_malloc(l + 1);
- if (s2)
- _mesa_strcpy(s2, s);
- return s2;
+ if (s) {
+ size_t l = _mesa_strlen(s);
+ char *s2 = (char *) _mesa_malloc(l + 1);
+ if (s2)
+ _mesa_strcpy(s2, s);
+ return s2;
+ }
+ else {
+ return NULL;
+ }
}
/** Wrapper around either atoi() or xf86atoi() */