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| author | jan.nijtmans <nijtmans@users.sourceforge.net> | 2021-12-16 09:02:59 (GMT) |
|---|---|---|
| committer | jan.nijtmans <nijtmans@users.sourceforge.net> | 2021-12-16 09:02:59 (GMT) |
| commit | fcc9c57804bed50e0acafd815c13b3426cb3f3d2 (patch) | |
| tree | 15e0bbbe91dbf4dddea34f6792c6b816bbd8a70d /generic/tclBasic.c | |
| parent | 76f73fbad9f75076442b2d7c0c4bab22583b26a4 (diff) | |
| download | tcl-fcc9c57804bed50e0acafd815c13b3426cb3f3d2.zip tcl-fcc9c57804bed50e0acafd815c13b3426cb3f3d2.tar.gz tcl-fcc9c57804bed50e0acafd815c13b3426cb3f3d2.tar.bz2 | |
Fix [6ef312dcf5]: memcpy() with NULL source in Tcl_CreateMathFunc()
Diffstat (limited to 'generic/tclBasic.c')
| -rw-r--r-- | generic/tclBasic.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/generic/tclBasic.c b/generic/tclBasic.c index 875fec5..aebcab7 100644 --- a/generic/tclBasic.c +++ b/generic/tclBasic.c @@ -3551,7 +3551,9 @@ Tcl_CreateMathFunc( data->proc = proc; data->numArgs = numArgs; data->argTypes = (Tcl_ValueType *)ckalloc(numArgs * sizeof(Tcl_ValueType)); - memcpy(data->argTypes, argTypes, numArgs * sizeof(Tcl_ValueType)); + if ((numArgs > 0) && (argTypes != NULL)) { + memcpy(data->argTypes, argTypes, numArgs * sizeof(Tcl_ValueType)); + } data->clientData = clientData; Tcl_DStringInit(&bigName); |