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| author | Guido van Rossum <guido@python.org> | 1991-12-16 13:06:34 (GMT) |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 1991-12-16 13:06:34 (GMT) |
| commit | 3ddee714d1d4473f8fa04a6d8356d3eafb695a50 (patch) | |
| tree | 38e2d973127d0b70de2e5ee25acafee6b1d9fb47 /Python/import.c | |
| parent | 75f8968ee7a4121ad9afe1be1e4f95ac04b68974 (diff) | |
| download | cpython-3ddee714d1d4473f8fa04a6d8356d3eafb695a50.zip cpython-3ddee714d1d4473f8fa04a6d8356d3eafb695a50.tar.gz cpython-3ddee714d1d4473f8fa04a6d8356d3eafb695a50.tar.bz2 | |
New magic word; and check it.
Diffstat (limited to 'Python/import.c')
| -rw-r--r-- | Python/import.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Python/import.c b/Python/import.c index ab08be5..c654940 100644 --- a/Python/import.c +++ b/Python/import.c @@ -37,6 +37,10 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. #include "compile.h" #include "ceval.h" +/* Magic word to reject pre-0.9.4 .pyc files */ + +#define MAGIC 0x949494L + /* Define pathname separator used in file names */ #ifdef macintosh @@ -160,9 +164,10 @@ get_module(m, name, m_ret) fpc = fopen(namebuf, "rb"); if (fpc != NULL) { long pyc_mtime; - (void) rd_long(fpc); /* Reserved for magic word */ + long magic; + magic = rd_long(fpc); pyc_mtime = rd_long(fpc); - if (pyc_mtime != 0 && pyc_mtime != -1 && pyc_mtime == mtime) { + if (magic == MAGIC && pyc_mtime == mtime && mtime != 0 && mtime != -1) { v = rd_object(fpc); if (v == NULL || err_occurred() || !is_codeobject(v)) { err_clear(); @@ -202,7 +207,7 @@ get_module(m, name, m_ret) namebuf[namelen+1] = '\0'; fpc = fopen(namebuf, "wb"); if (fpc != NULL) { - wr_long(0L, fpc); /* Reserved for magic word */ + wr_long(MAGIC, fpc); /* First write a 0 for mtime */ wr_long(0L, fpc); wr_object((object *)co, fpc); |