Re: [PATCH] libsanitizer: Fix setbuffer() interceptor (accept size not mode)

[Bernhard Reutner-Fischer via Gcc-patches]

On 22 December 2021 19:19:12 CET, Azat Khuzhin via Gcc-patches 
<gcc-patches@gcc.gnu.org> wrote:
>Fixes: b667dd7017a ("Libsanitizer merge from trunk r368656.")
>Refs: https://reviews.llvm.org/D116176
>---
> .../sanitizer_common/sanitizer_common_interceptors.inc     | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
>diff --git a/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc 
>b/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc
>index abb38ccfa15..60b0545a943 100644
>--- a/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc
>+++ b/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc
>@@ -7858,12 +7858,13 @@ INTERCEPTOR(void, setbuf, __sanitizer_FILE *stream, 
>char *buf) {
>       unpoison_file(stream);
> }
> 
>-INTERCEPTOR(void, setbuffer, __sanitizer_FILE *stream, char *buf, int mode) {
>+INTERCEPTOR(void, setbuffer, __sanitizer_FILE *stream, char *buf,
>+  SIZE_T size) {
>   void *ctx;
>-  COMMON_INTERCEPTOR_ENTER(ctx, setbuffer, stream, buf, mode);
>+  COMMON_INTERCEPTOR_ENTER(ctx, setbuffer, stream, buf, size);
>   REAL(setbuffer)(stream, buf, mode);

Where does mode come from after this patch?
thanks,

>   if (buf) {
>-    COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer_bufsiz);
>+    COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size);
>   }
>   if (stream)
>     unpoison_file(stream);