diff options
Diffstat (limited to 'llvm_mode/afl-clang-fast.c')
| -rw-r--r-- | llvm_mode/afl-clang-fast.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm_mode/afl-clang-fast.c b/llvm_mode/afl-clang-fast.c index d1fa548c..6ea98111 100644 --- a/llvm_mode/afl-clang-fast.c +++ b/llvm_mode/afl-clang-fast.c @@ -811,13 +811,17 @@ int main(int argc, char **argv, char **envp) { if (strncasecmp(ptr, "ngram", strlen("ngram")) == 0) { ptr += strlen("ngram"); - while (*ptr && (*ptr < '0' || *ptr > '9')) + while (*ptr && (*ptr < '0' || *ptr > '9')) { ptr++; - if (!*ptr) - if ((ptr = getenv("AFL_LLVM_NGRAM_SIZE")) != NULL) + } + if (!*ptr) { + ptr = getenv("AFL_LLVM_NGRAM_SIZE"); + if (!ptr || !*ptr) { FATAL( "you must set the NGRAM size with (e.g. for value 2) " "AFL_LLVM_INSTRUMENT=ngram-2"); + } + } ngram_size = atoi(ptr); if (ngram_size < 2 || ngram_size > NGRAM_SIZE_MAX) FATAL( |