X-Git-Url: https://git.reactos.org/?p=reactos.git;a=blobdiff_plain;f=reactos%2Fdll%2Fwin32%2Fmsacm32%2Fformat.c;h=14bec09fca2df7d13e45f17c3e8c63d3aad6ad08;hp=cefdded34b60c0a6adfe750cfe25aa5c4cbca4da;hb=80a73ead06fc46955736164a73f4af9edb91a1bc;hpb=b355176a29ea481dee2cb9b43393466eb4b44aef

diff --git a/reactos/dll/win32/msacm32/format.c b/reactos/dll/win32/msacm32/format.c
index cefdded34b6..14bec09fca2 100644
--- a/reactos/dll/win32/msacm32/format.c
+++ b/reactos/dll/win32/msacm32/format.c
@@ -660,6 +660,9 @@ MMRESULT WINAPI acmFormatSuggest(HACMDRIVER had, PWAVEFORMATEX pwfxSrc,
     TRACE("(%p, %p, %p, %d, %d)\n",
 	  had, pwfxSrc, pwfxDst, cbwfxDst, fdwSuggest);
 
+    if (!pwfxSrc || !pwfxDst)
+        return MMSYSERR_INVALPARAM;
+
     if (fdwSuggest & ~(ACM_FORMATSUGGESTF_NCHANNELS|ACM_FORMATSUGGESTF_NSAMPLESPERSEC|
 		       ACM_FORMATSUGGESTF_WBITSPERSAMPLE|ACM_FORMATSUGGESTF_WFORMATTAG))
 	return MMSYSERR_INVALFLAG;