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Issue 566073003: Fix a bug in ICU's bidi handling. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/icu52/
Patch Set: Created 6 years, 3 months ago
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1 Index: source/test/cintltst/cbiditst.c
2 ===================================================================
3 --- source/test/cintltst/cbiditst.c (revision 36303)
4 +++ source/test/cintltst/cbiditst.c (revision 36304)
5 @@ -87,6 +87,8 @@
6
7 static void doTailTest(void);
8
9 +static void testBracketOverflow(void);
10 +
11 /* new BIDI API */
12 static void testReorderingMode(void);
13 static void testReorderRunsOnly(void);
14 @@ -133,6 +135,7 @@
15 addTest(root, testClassOverride, "complex/bidi/TestClassOverride");
16 addTest(root, testGetBaseDirection, "complex/bidi/testGetBaseDirection");
17 addTest(root, testContext, "complex/bidi/testContext");
18 + addTest(root, testBracketOverflow, "complex/bidi/TestBracketOverflow");
19
20 addTest(root, doArabicShapingTest, "complex/arabic-shaping/ArabicShapingTes t");
21 addTest(root, doLamAlefSpecialVLTRArabicShapingTest, "complex/arabic-shapin g/lamalef");
22 @@ -4896,3 +4899,25 @@
23
24 log_verbose("\nExiting TestContext \n\n");
25 }
26 +
27 +/* Ticket#11054 ubidi_setPara crash with heavily nested brackets */
28 +static void
29 +testBracketOverflow(void) {
30 + static const char* TEXT = "(((((((((((((((((((((((((((((((((((((((((a)(A))) ))))))))))))))))))))))))))))))))))))))";
31 + UErrorCode status = U_ZERO_ERROR;
32 + UBiDi* bidi;
33 + UChar src[100];
34 + UChar dest[100];
35 + int32_t len;
36 +
37 + bidi = ubidi_open();
38 + len = uprv_strlen(TEXT);
39 + pseudoToU16(len, TEXT, src);
40 + ubidi_setPara(bidi, src, len, UBIDI_DEFAULT_LTR , NULL, &status);
41 + if (U_FAILURE(status)) {
42 + log_err("setPara failed with heavily nested brackets - %s", u_errorName (status));
43 + }
44 +
45 + ubidi_close(bidi);
46 +}
47 +
48 Index: source/common/ubidiimp.h
49 ===================================================================
50 --- source/common/ubidiimp.h (revision 36303)
51 +++ source/common/ubidiimp.h (revision 36304)
52 @@ -173,7 +173,7 @@
53 /* array of opening entries which should be enough in most cases; no malloc () */
54 Opening simpleOpenings[SIMPLE_OPENINGS_SIZE];
55 Opening *openings; /* pointer to current array of entries */
56 - int32_t openingsSize; /* number of allocated entries */
57 + int32_t openingsCount; /* number of allocated entries */
58 int32_t isoRunLast; /* index of last used entry */
59 /* array of nested isolated sequence entries; can never excess UBIDI_MAX_EX PLICIT_LEVEL
60 + 1 for index 0, + 1 for before the first isolated sequence */
61 Index: source/common/ubidi.c
62 ===================================================================
63 --- source/common/ubidi.c (revision 36303)
64 +++ source/common/ubidi.c (revision 36304)
65 @@ -679,10 +679,10 @@
66 bd->isoRuns[0].contextPos=0;
67 if(pBiDi->openingsMemory) {
68 bd->openings=pBiDi->openingsMemory;
69 - bd->openingsSize=pBiDi->openingsSize;
70 + bd->openingsCount=pBiDi->openingsSize / sizeof(Opening);
71 } else {
72 bd->openings=bd->simpleOpenings;
73 - bd->openingsSize=SIMPLE_OPENINGS_SIZE;
74 + bd->openingsCount=SIMPLE_OPENINGS_SIZE;
75 }
76 bd->isNumbersSpecial=bd->pBiDi->reorderingMode==UBIDI_REORDER_NUMBERS_SPECI AL ||
77 bd->pBiDi->reorderingMode==UBIDI_REORDER_INVERSE_FOR_N UMBERS_SPECIAL;
78 @@ -743,7 +743,7 @@
79 bracketAddOpening(BracketData *bd, UChar match, int32_t position) {
80 IsoRun *pLastIsoRun=&bd->isoRuns[bd->isoRunLast];
81 Opening *pOpening;
82 - if(pLastIsoRun->limit>=bd->openingsSize) { /* no available new entry */
83 + if(pLastIsoRun->limit>=bd->openingsCount) { /* no available new entry */
84 UBiDi *pBiDi=bd->pBiDi;
85 if(!getInitialOpeningsMemory(pBiDi, pLastIsoRun->limit * 2))
86 return FALSE;
87 @@ -751,7 +751,7 @@
88 uprv_memcpy(pBiDi->openingsMemory, bd->simpleOpenings,
89 SIMPLE_OPENINGS_SIZE * sizeof(Opening));
90 bd->openings=pBiDi->openingsMemory; /* may have changed */
91 - bd->openingsSize=pBiDi->openingsSize;
92 + bd->openingsCount=pBiDi->openingsSize / sizeof(Opening);
93 }
94 pOpening=&bd->openings[pLastIsoRun->limit];
95 pOpening->position=position;
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