From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Mon, 8 Nov 2004 19:30:08 +0000 (+0000)
Subject: Improved memcheck/tests/scalar so that it shows an example whereby the syscall
X-Git-Tag: svn/VALGRIND_3_0_0~1362
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a2954cd68b2bb77fa8eb2b198edf7fca150e3cdc;p=thirdparty%2Fvalgrind.git

Improved memcheck/tests/scalar so that it shows an example whereby the syscall
number itself is undefined.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2950
---

diff --git a/memcheck/tests/.cvsignore b/memcheck/tests/.cvsignore
index 7ef3ece758..853f8d2d58 100644
--- a/memcheck/tests/.cvsignore
+++ b/memcheck/tests/.cvsignore
@@ -48,8 +48,10 @@ overlap
 realloc1
 realloc2
 realloc3
+scalar
 sigaltstack
 signal2
+str_tester
 supp1
 supp2
 suppfree
diff --git a/memcheck/tests/scalar.c b/memcheck/tests/scalar.c
index 599d3ddf77..440f382eb6 100644
--- a/memcheck/tests/scalar.c
+++ b/memcheck/tests/scalar.c
@@ -1,5 +1,6 @@
 #include <stdlib.h>
 #include <unistd.h>
+#include <sys/syscall.h>
 
 int main(void)
 {
@@ -9,9 +10,12 @@ int main(void)
    // uninitialised, but we know pc[0] points to 0x0
    char** pc  = malloc(sizeof(char*));
    
-   // Four errors:  each of the scalar args are undefined, plus the 2nd arg
-   // points to unaddressable memory.
-   write(pi[0], pc[0], pi[0]+1);
+   // Five errors:  
+   // - the syscall number itself is undefined (but we know it's
+   //   0 + __NR_write :)
+   // - each of the scalar args are undefined
+   // - the 2nd arg points to unaddressable memory.
+   syscall(pi[0]+__NR_write, pi[0], pc[0], pi[0]+1);
 
    return 0;
 }
diff --git a/memcheck/tests/scalar.stderr.exp b/memcheck/tests/scalar.stderr.exp
index 43a75ee8bb..b5ea4c8781 100644
--- a/memcheck/tests/scalar.stderr.exp
+++ b/memcheck/tests/scalar.stderr.exp
@@ -1,20 +1,25 @@
+Syscall param (syscallno) contains uninitialised byte(s)
+   at 0x........: syscall (in /...libc...)
+   by 0x........: __libc_start_main (...libc...)
+   by 0x........: ...
+
 Syscall param write(fd) contains uninitialised byte(s)
-   at 0x........: write (in /...libc...)
+   at 0x........: syscall (in /...libc...)
    by 0x........: __libc_start_main (...libc...)
    by 0x........: ...
 
 Syscall param write(buf) contains uninitialised byte(s)
-   at 0x........: write (in /...libc...)
+   at 0x........: syscall (in /...libc...)
    by 0x........: __libc_start_main (...libc...)
    by 0x........: ...
 
 Syscall param write(count) contains uninitialised byte(s)
-   at 0x........: write (in /...libc...)
+   at 0x........: syscall (in /...libc...)
    by 0x........: __libc_start_main (...libc...)
    by 0x........: ...
 
 Syscall param write(buf) points to unaddressable byte(s)
-   at 0x........: write (in /...libc...)
+   at 0x........: syscall (in /...libc...)
    by 0x........: __libc_start_main (...libc...)
    by 0x........: ...
  Address 0x........ is not stack'd, malloc'd or (recently) free'd
diff --git a/memcheck/tests/scalar.supp b/memcheck/tests/scalar.supp
index 14c46fba07..7a4267af09 100644
--- a/memcheck/tests/scalar.supp
+++ b/memcheck/tests/scalar.supp
@@ -3,7 +3,7 @@
    foo2
    Memcheck:Param
    write(buf)
-   fun:__write_nocancel
+   fun:syscall
    fun:__libc_start_main
 }
 
diff --git a/memcheck/tests/scalar_supp.stderr.exp b/memcheck/tests/scalar_supp.stderr.exp
index d9821acef5..6bf756ec74 100644
--- a/memcheck/tests/scalar_supp.stderr.exp
+++ b/memcheck/tests/scalar_supp.stderr.exp
@@ -1,9 +1,14 @@
+Syscall param (syscallno) contains uninitialised byte(s)
+   at 0x........: syscall (in /...libc...)
+   by 0x........: __libc_start_main (...libc...)
+   by 0x........: ...
+
 Syscall param write(fd) contains uninitialised byte(s)
-   at 0x........: write (in /...libc...)
+   at 0x........: syscall (in /...libc...)
    by 0x........: __libc_start_main (...libc...)
    by 0x........: ...
 
 Syscall param write(count) contains uninitialised byte(s)
-   at 0x........: write (in /...libc...)
+   at 0x........: syscall (in /...libc...)
    by 0x........: __libc_start_main (...libc...)
    by 0x........: ...