| // RUN: %clangxx_msan -O0 -g %s -o %t && %run %t |
| // RUN: %clangxx_msan -O0 -g -DPOSITIVE %s -o %t && not %run %t 2>&1 | FileCheck %s |
| |
| #include <assert.h> |
| #include <iconv.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include <errno.h> |
| |
| #if defined(__NetBSD__) |
| #include <sys/param.h> |
| #if __NetBSD_Prereq__(9,99,17) |
| #define NETBSD_POSIX_ICONV 1 |
| #else |
| #define NETBSD_POSIX_ICONV 0 |
| #endif |
| #endif |
| |
| int main(void) { |
| iconv_t cd = iconv_open("ASCII", "ASCII"); |
| assert(cd != (iconv_t)-1); |
| |
| char inbuf_[100]; |
| strcpy(inbuf_, "sample text"); |
| char outbuf_[100]; |
| #if defined(__NetBSD__) && !NETBSD_POSIX_ICONV |
| // Some OSes expect the 2nd argument of iconv(3) to be of type const char ** |
| const char *inbuf = inbuf_; |
| #else |
| char *inbuf = inbuf_; |
| #endif |
| char *outbuf = outbuf_; |
| size_t inbytesleft = strlen(inbuf_); |
| size_t outbytesleft = sizeof(outbuf_); |
| |
| #ifdef POSITIVE |
| { |
| char u; |
| char *volatile p = &u; |
| inbuf_[5] = *p; |
| } |
| #endif |
| |
| size_t res; |
| res = iconv(cd, 0, 0, 0, 0); |
| assert(res != (size_t)-1); |
| |
| res = iconv(cd, 0, 0, &outbuf, &outbytesleft); |
| assert(res != (size_t)-1); |
| |
| res = iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft); |
| // CHECK: MemorySanitizer: use-of-uninitialized-value |
| // CHECK: #0 {{.*}} in main {{.*}}iconv.cpp:[[@LINE-2]] |
| assert(res != (size_t)-1); |
| assert(inbytesleft == 0); |
| |
| assert(memcmp(inbuf_, outbuf_, strlen(inbuf_)) == 0); |
| |
| iconv_close(cd); |
| return 0; |
| } |