Fix potential overflow

KitaitiMakoto · KitaitiMakoto · commit 9d0dda7933e6 · 2025-01-21T07:36:11.000+09:00
diff --git a/bindings/ruby/ext/ruby_whisper_transcribe.cpp b/bindings/ruby/ext/ruby_whisper_transcribe.cpp
@@ -110,7 +110,7 @@ ruby_whisper_transcribe(int argc, VALUE *argv, VALUE self) {
       }
     } else {
       for (uint64_t i = 0; i < n; i++) {
-        pcmf32[i] = float(pcm16[2*i] + pcm16[2*i + 1])/65536.0f;
+        pcmf32[i] = float((int32_t)pcm16[2*i] + pcm16[2*i + 1])/65536.0f;
       }
     }
 

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ ruby_whisper_transcribe(int argc, VALUE *argv, VALUE self) {`
`110`	`110`	`}`
`111`	`111`	`} else {`
`112`	`112`	`for (uint64_t i = 0; i < n; i++) {`
`113`		`- pcmf32[i] = float(pcm16[2i] + pcm16[2i + 1])/65536.0f;`
	`113`	`+ pcmf32[i] = float((int32_t)pcm16[2i] + pcm16[2i + 1])/65536.0f;`
`114`	`114`	`}`
`115`	`115`	`}`
`116`	`116`