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Overview
| Comment: | [39fed4dae5] Make sure return value from Tcl_PkgRequire*() survives long enough for caller to use it. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | core-8-6-branch |
| Files: | files | file ages | folders |
| SHA3-256: |
6bf2a6d132e66d187e208a45f3afbf28 |
| User & Date: | dgp 2019-03-08 14:46:26 |
Context
|
2019-03-17
| ||
| 22:15 | For Tcl >= 8.7, always compile-in the extended Unicode tables, no matter the value of TCL_UTF_MAX. D... check-in: 5c8a1f59fa user: jan.nijtmans tags: core-8-6-branch | |
|
2019-03-13
| ||
| 00:44 | merge 8.6 check-in: 73e7e3f694 user: sebres tags: sebres-8-6-clock-speedup-cr2 | |
|
2019-03-08
| ||
| 14:47 | merge 8.6 check-in: 8d5d640832 user: dgp tags: core-8-branch | |
| 14:46 | [39fed4dae5] Make sure return value from Tcl_PkgRequire*() survives long enough for caller to use it... check-in: 6bf2a6d132 user: dgp tags: core-8-6-branch | |
| 04:42 | merge 8.5 (perf-test) check-in: 5b6af82bad user: sebres tags: core-8-6-branch | |
|
2019-03-07
| ||
| 22:13 | In the 8.6.* releases, Tcl_GetStringResult() still passes through interp->result. Have to ask specif... Closed-Leaf check-in: e6479634cb user: dgp tags: bug-39fed4dae5 | |
Changes
Changes to generic/tclPkg.c.
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* For each package that is known in any way to an interpreter, there is one
* record of the following type. These records are stored in the
* "packageTable" hash table in the interpreter, keyed by package name such as
* "Tk" (no version number).
*/
typedef struct Package {
char *version; /* Version that has been supplied in this
* interpreter via "package provide"
* (malloc'ed). NULL means the package doesn't
* exist in this interpreter yet. */
PkgAvail *availPtr; /* First in list of all available versions of
* this package. */
const void *clientData; /* Client data. */
} Package;
typedef struct Require {
void * clientDataPtr;
................................................................................
{
Package *pkgPtr;
char *pvi, *vi;
int res;
pkgPtr = FindPackage(interp, name);
if (pkgPtr->version == NULL) {
DupString(pkgPtr->version, version);
pkgPtr->clientData = clientData;
return TCL_OK;
}
if (CheckVersionAndConvert(interp, pkgPtr->version, &pvi,
NULL) != TCL_OK) {
return TCL_ERROR;
} else if (CheckVersionAndConvert(interp, version, &vi, NULL) != TCL_OK) {
ckfree(pvi);
return TCL_ERROR;
}
................................................................................
if (clientData != NULL) {
pkgPtr->clientData = clientData;
}
return TCL_OK;
}
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"conflicting versions provided for package \"%s\": %s, then %s",
name, pkgPtr->version, version));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "VERSIONCONFLICT", NULL);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
................................................................................
/*
* Translate between old and new API, and defer to the new function.
*/
if (version == NULL) {
if (Tcl_PkgRequireProc(interp, name, 0, NULL, clientDataPtr) == TCL_OK) {
result = Tcl_GetStringResult(interp);
Tcl_ResetResult(interp);
}
} else {
if (exact && TCL_OK
!= CheckVersionAndConvert(interp, version, NULL, NULL)) {
return NULL;
}
ov = Tcl_NewStringObj(version, -1);
if (exact) {
Tcl_AppendStringsToObj(ov, "-", version, NULL);
}
Tcl_IncrRefCount(ov);
if (Tcl_PkgRequireProc(interp, name, 1, &ov, clientDataPtr) == TCL_OK) {
result = Tcl_GetStringResult(interp);
Tcl_ResetResult(interp);
}
TclDecrRefCount(ov);
}
return result;
}
................................................................................
}
/*
* Ensure that the provided version meets the current requirements.
*/
if (reqc != 0) {
CheckVersionAndConvert(interp, reqPtr->pkgPtr->version, &pkgVersionI, NULL);
satisfies = SomeRequirementSatisfied(pkgVersionI, reqc, reqv);
ckfree(pkgVersionI);
if (!satisfies) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"version conflict for package \"%s\": have %s, need",
name, reqPtr->pkgPtr->version));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "VERSIONCONFLICT",
NULL);
AddRequirementsToResult(interp, reqc, reqv);
return TCL_ERROR;
}
}
if (clientDataPtr) {
const void **ptr = (const void **) clientDataPtr;
*ptr = reqPtr->pkgPtr->clientData;
}
Tcl_SetObjResult(interp, Tcl_NewStringObj(reqPtr->pkgPtr->version, -1));
return TCL_OK;
}
static int
PkgRequireCoreCleanup(ClientData data[], Tcl_Interp *interp, int result) {
ckfree(data[0]);
return result;
................................................................................
" no version of package %s provided",
name, versionToProvide, name));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNPROVIDED",
NULL);
} else {
char *pvi, *vi;
if (CheckVersionAndConvert(interp, reqPtr->pkgPtr->version, &pvi,
NULL) != TCL_OK) {
result = TCL_ERROR;
} else if (CheckVersionAndConvert(interp,
versionToProvide, &vi, NULL) != TCL_OK) {
ckfree(pvi);
result = TCL_ERROR;
} else {
int res = CompareVersions(pvi, vi, NULL);
................................................................................
ckfree(vi);
if (res != 0) {
result = TCL_ERROR;
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"attempt to provide package %s %s failed:"
" package %s %s provided instead",
name, versionToProvide,
name, reqPtr->pkgPtr->version));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE",
"WRONGPROVIDE", NULL);
}
}
}
} else if (result != TCL_ERROR) {
Tcl_Obj *codePtr = Tcl_NewIntObj(result);
................................................................................
* This is consistent with our returning NULL. If we're not
* willing to tell our caller we got a particular version, we
* shouldn't store that version for telling future callers
* either.
*/
if (reqPtr->pkgPtr->version != NULL) {
ckfree(reqPtr->pkgPtr->version);
reqPtr->pkgPtr->version = NULL;
}
reqPtr->pkgPtr->clientData = NULL;
return result;
}
Tcl_NRAddCallback(interp, data[3], reqPtr, INT2PTR(reqc), (void *)reqv, NULL);
................................................................................
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, keyString);
if (hPtr == NULL) {
continue;
}
pkgPtr = Tcl_GetHashValue(hPtr);
Tcl_DeleteHashEntry(hPtr);
if (pkgPtr->version != NULL) {
ckfree(pkgPtr->version);
}
while (pkgPtr->availPtr != NULL) {
availPtr = pkgPtr->availPtr;
pkgPtr->availPtr = availPtr->nextPtr;
Tcl_EventuallyFree(availPtr->version, TCL_DYNAMIC);
Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
ckfree(availPtr);
................................................................................
}
argv2 = TclGetString(objv[2]);
if (objc == 3) {
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
if (hPtr != NULL) {
pkgPtr = Tcl_GetHashValue(hPtr);
if (pkgPtr->version != NULL) {
Tcl_SetObjResult(interp,
Tcl_NewStringObj(pkgPtr->version, -1));
}
}
return TCL_OK;
}
argv3 = TclGetString(objv[3]);
if (CheckVersionAndConvert(interp, argv3, NULL, NULL) != TCL_OK) {
return TCL_ERROR;
................................................................................
Tcl_HashEntry *hPtr;
PkgAvail *availPtr;
for (hPtr = Tcl_FirstHashEntry(&iPtr->packageTable, &search);
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
pkgPtr = Tcl_GetHashValue(hPtr);
if (pkgPtr->version != NULL) {
ckfree(pkgPtr->version);
}
while (pkgPtr->availPtr != NULL) {
availPtr = pkgPtr->availPtr;
pkgPtr->availPtr = availPtr->nextPtr;
Tcl_EventuallyFree(availPtr->version, TCL_DYNAMIC);
Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
ckfree(availPtr);
|
| < < < > | | | | | | > | | | | | | | | < | |
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* For each package that is known in any way to an interpreter, there is one
* record of the following type. These records are stored in the
* "packageTable" hash table in the interpreter, keyed by package name such as
* "Tk" (no version number).
*/
typedef struct Package {
Tcl_Obj *version;
PkgAvail *availPtr; /* First in list of all available versions of
* this package. */
const void *clientData; /* Client data. */
} Package;
typedef struct Require {
void * clientDataPtr;
................................................................................
{
Package *pkgPtr;
char *pvi, *vi;
int res;
pkgPtr = FindPackage(interp, name);
if (pkgPtr->version == NULL) {
pkgPtr->version = Tcl_NewStringObj(version, -1);
Tcl_IncrRefCount(pkgPtr->version);
pkgPtr->clientData = clientData;
return TCL_OK;
}
if (CheckVersionAndConvert(interp, Tcl_GetString(pkgPtr->version), &pvi,
NULL) != TCL_OK) {
return TCL_ERROR;
} else if (CheckVersionAndConvert(interp, version, &vi, NULL) != TCL_OK) {
ckfree(pvi);
return TCL_ERROR;
}
................................................................................
if (clientData != NULL) {
pkgPtr->clientData = clientData;
}
return TCL_OK;
}
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"conflicting versions provided for package \"%s\": %s, then %s",
name, Tcl_GetString(pkgPtr->version), version));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "VERSIONCONFLICT", NULL);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
................................................................................
/*
* Translate between old and new API, and defer to the new function.
*/
if (version == NULL) {
if (Tcl_PkgRequireProc(interp, name, 0, NULL, clientDataPtr) == TCL_OK) {
result = Tcl_GetString(Tcl_GetObjResult(interp));
Tcl_ResetResult(interp);
}
} else {
if (exact && TCL_OK
!= CheckVersionAndConvert(interp, version, NULL, NULL)) {
return NULL;
}
ov = Tcl_NewStringObj(version, -1);
if (exact) {
Tcl_AppendStringsToObj(ov, "-", version, NULL);
}
Tcl_IncrRefCount(ov);
if (Tcl_PkgRequireProc(interp, name, 1, &ov, clientDataPtr) == TCL_OK) {
result = Tcl_GetString(Tcl_GetObjResult(interp));
Tcl_ResetResult(interp);
}
TclDecrRefCount(ov);
}
return result;
}
................................................................................
}
/*
* Ensure that the provided version meets the current requirements.
*/
if (reqc != 0) {
CheckVersionAndConvert(interp, Tcl_GetString(reqPtr->pkgPtr->version),
&pkgVersionI, NULL);
satisfies = SomeRequirementSatisfied(pkgVersionI, reqc, reqv);
ckfree(pkgVersionI);
if (!satisfies) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"version conflict for package \"%s\": have %s, need",
name, Tcl_GetString(reqPtr->pkgPtr->version)));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "VERSIONCONFLICT",
NULL);
AddRequirementsToResult(interp, reqc, reqv);
return TCL_ERROR;
}
}
if (clientDataPtr) {
const void **ptr = (const void **) clientDataPtr;
*ptr = reqPtr->pkgPtr->clientData;
}
Tcl_SetObjResult(interp, reqPtr->pkgPtr->version);
return TCL_OK;
}
static int
PkgRequireCoreCleanup(ClientData data[], Tcl_Interp *interp, int result) {
ckfree(data[0]);
return result;
................................................................................
" no version of package %s provided",
name, versionToProvide, name));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNPROVIDED",
NULL);
} else {
char *pvi, *vi;
if (TCL_OK != CheckVersionAndConvert(interp,
Tcl_GetString(reqPtr->pkgPtr->version), &pvi, NULL)) {
result = TCL_ERROR;
} else if (CheckVersionAndConvert(interp,
versionToProvide, &vi, NULL) != TCL_OK) {
ckfree(pvi);
result = TCL_ERROR;
} else {
int res = CompareVersions(pvi, vi, NULL);
................................................................................
ckfree(vi);
if (res != 0) {
result = TCL_ERROR;
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"attempt to provide package %s %s failed:"
" package %s %s provided instead",
name, versionToProvide,
name, Tcl_GetString(reqPtr->pkgPtr->version)));
Tcl_SetErrorCode(interp, "TCL", "PACKAGE",
"WRONGPROVIDE", NULL);
}
}
}
} else if (result != TCL_ERROR) {
Tcl_Obj *codePtr = Tcl_NewIntObj(result);
................................................................................
* This is consistent with our returning NULL. If we're not
* willing to tell our caller we got a particular version, we
* shouldn't store that version for telling future callers
* either.
*/
if (reqPtr->pkgPtr->version != NULL) {
Tcl_DecrRefCount(reqPtr->pkgPtr->version);
reqPtr->pkgPtr->version = NULL;
}
reqPtr->pkgPtr->clientData = NULL;
return result;
}
Tcl_NRAddCallback(interp, data[3], reqPtr, INT2PTR(reqc), (void *)reqv, NULL);
................................................................................
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, keyString);
if (hPtr == NULL) {
continue;
}
pkgPtr = Tcl_GetHashValue(hPtr);
Tcl_DeleteHashEntry(hPtr);
if (pkgPtr->version != NULL) {
Tcl_DecrRefCount(pkgPtr->version);
}
while (pkgPtr->availPtr != NULL) {
availPtr = pkgPtr->availPtr;
pkgPtr->availPtr = availPtr->nextPtr;
Tcl_EventuallyFree(availPtr->version, TCL_DYNAMIC);
Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
ckfree(availPtr);
................................................................................
}
argv2 = TclGetString(objv[2]);
if (objc == 3) {
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
if (hPtr != NULL) {
pkgPtr = Tcl_GetHashValue(hPtr);
if (pkgPtr->version != NULL) {
Tcl_SetObjResult(interp, pkgPtr->version);
}
}
return TCL_OK;
}
argv3 = TclGetString(objv[3]);
if (CheckVersionAndConvert(interp, argv3, NULL, NULL) != TCL_OK) {
return TCL_ERROR;
................................................................................
Tcl_HashEntry *hPtr;
PkgAvail *availPtr;
for (hPtr = Tcl_FirstHashEntry(&iPtr->packageTable, &search);
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
pkgPtr = Tcl_GetHashValue(hPtr);
if (pkgPtr->version != NULL) {
Tcl_DecrRefCount(pkgPtr->version);
}
while (pkgPtr->availPtr != NULL) {
availPtr = pkgPtr->availPtr;
pkgPtr->availPtr = availPtr->nextPtr;
Tcl_EventuallyFree(availPtr->version, TCL_DYNAMIC);
Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
ckfree(availPtr);
|
Changes to generic/tclTestProcBodyObj.c.
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 .. 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 ... 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 |
#include "tclInt.h" /* * name and version of this package */ static const char packageName[] = "procbodytest"; static const char packageVersion[] = "1.0"; /* * Name of the commands exported by this package */ static const char procCommand[] = "proc"; /* * this struct describes an entry in the table of command names and command * procs */ typedef struct CmdTable { ................................................................................ } CmdTable; /* * Declarations for functions defined in this file. */ static int ProcBodyTestProcObjCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int ProcBodyTestInitInternal(Tcl_Interp *interp, int isSafe); static int RegisterCommand(Tcl_Interp* interp, const char *namespace, const CmdTable *cmdTablePtr); /* * List of commands to create when the package is loaded; must go after the * declarations of the enable command procedure. */ static const CmdTable commands[] = { { procCommand, ProcBodyTestProcObjCmd, 1 }, { 0, 0, 0 } }; static const CmdTable safeCommands[] = { { procCommand, ProcBodyTestProcObjCmd, 1 }, { 0, 0, 0 } }; /* *---------------------------------------------------------------------- * * Procbodytest_Init -- ................................................................................ myobjv[4] = NULL; result = Tcl_ProcObjCmd(NULL, interp, objc, myobjv); Tcl_DecrRefCount(bodyObjPtr); return result; } /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */ |
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > |
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#include "tclInt.h" /* * name and version of this package */ static const char packageName[] = "procbodytest"; static const char packageVersion[] = "1.1"; /* * Name of the commands exported by this package */ static const char procCommand[] = "proc"; static const char checkCommand[] = "check"; /* * this struct describes an entry in the table of command names and command * procs */ typedef struct CmdTable { ................................................................................ } CmdTable; /* * Declarations for functions defined in this file. */ static int ProcBodyTestProcObjCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int ProcBodyTestCheckObjCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int ProcBodyTestInitInternal(Tcl_Interp *interp, int isSafe); static int RegisterCommand(Tcl_Interp* interp, const char *namespace, const CmdTable *cmdTablePtr); /* * List of commands to create when the package is loaded; must go after the * declarations of the enable command procedure. */ static const CmdTable commands[] = { { procCommand, ProcBodyTestProcObjCmd, 1 }, { checkCommand, ProcBodyTestCheckObjCmd, 1 }, { 0, 0, 0 } }; static const CmdTable safeCommands[] = { { procCommand, ProcBodyTestProcObjCmd, 1 }, { checkCommand, ProcBodyTestCheckObjCmd, 1 }, { 0, 0, 0 } }; /* *---------------------------------------------------------------------- * * Procbodytest_Init -- ................................................................................ myobjv[4] = NULL; result = Tcl_ProcObjCmd(NULL, interp, objc, myobjv); Tcl_DecrRefCount(bodyObjPtr); return result; } /* *---------------------------------------------------------------------- * * ProcBodyTestCheckObjCmd -- * * Implements the "procbodytest::check" command. Here is the command * description: * procbodytest::check * * Performs an internal check that the Tcl_PkgPresent() command returns * the same version number as was registered when the procbodytest package * was provided. Places a boolean in the interp result indicating the * test outcome. * * Results: * Returns a standard Tcl code. * *---------------------------------------------------------------------- */ static int ProcBodyTestCheckObjCmd( ClientData dummy, /* context; not used */ Tcl_Interp *interp, /* the current interpreter */ int objc, /* argument count */ Tcl_Obj *const objv[]) /* arguments */ { const char *version; if (objc != 1) { Tcl_WrongNumArgs(interp, 1, objv, ""); return TCL_ERROR; } version = Tcl_PkgPresent(interp, packageName, packageVersion, 1); Tcl_SetObjResult(interp, Tcl_NewBooleanObj( strcmp(version, packageVersion) == 0)); return TCL_OK; } /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */ |
Changes to tests/proc.test.
317 318 319 320 321 322 323 324 325 326 327 328 329 330 |
set end [getbytes]
}
set leakedBytes [expr {$end - $tmp}]
} -cleanup {
rename getbytes {}
unset -nocomplain end i tmp leakedBytes
} -result 0
test proc-5.1 {Bytecompiling noop; test for correct argument substitution} -body {
proc p args {} ; # this will be bytecompiled into t
proc t {} {
set res {}
set a 0
set b 0
|
> > > |
317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 |
set end [getbytes]
}
set leakedBytes [expr {$end - $tmp}]
} -cleanup {
rename getbytes {}
unset -nocomplain end i tmp leakedBytes
} -result 0
test proc-4.9 {[39fed4dae5] Valid Tcl_PkgPresent return} procbodytest {
procbodytest::check
} 1
test proc-5.1 {Bytecompiling noop; test for correct argument substitution} -body {
proc p args {} ; # this will be bytecompiled into t
proc t {} {
set res {}
set a 0
set b 0
|