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ElfLinker::init() zero length implies 0x4000 blank bytes

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jreiser@BitWagon.com 2016-09-05 20:36:07 -07:00 committed by Markus F.X.J. Oberhumer
parent 98b428a8be
commit 1197beaa13
1 changed files with 14 additions and 12 deletions
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26
src/linker.cpp
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@ -184,23 +184,25 @@ void ElfLinker::init(const void *pdata_v, int plen)
}
input[inputlen] = 0; // NUL terminate
output = new upx_byte[inputlen];
output = new upx_byte[inputlen ? inputlen : 0x4000];
outputlen = 0;
int pos = find(input, inputlen, "Sections:\n", 10);
assert(pos != -1);
char *psections = (char *) input + pos;
if ((int)strlen("Sections:\n" "SYMBOL TABLE:\n" "RELOCATION RECORDS FOR ") < inputlen) {
int pos = find(input, inputlen, "Sections:\n", 10);
assert(pos != -1);
char *psections = (char *) input + pos;
char *psymbols = strstr(psections, "SYMBOL TABLE:\n");
assert(psymbols != NULL);
char *psymbols = strstr(psections, "SYMBOL TABLE:\n");
assert(psymbols != NULL);
char *prelocs = strstr(psymbols, "RELOCATION RECORDS FOR ");
assert(prelocs != NULL);
char *prelocs = strstr(psymbols, "RELOCATION RECORDS FOR ");
assert(prelocs != NULL);
preprocessSections(psections, psymbols);
preprocessSymbols(psymbols, prelocs);
preprocessRelocations(prelocs, (char*) input + inputlen);
addLoader("*UND*");
preprocessSections(psections, psymbols);
preprocessSymbols(psymbols, prelocs);
preprocessRelocations(prelocs, (char*) input + inputlen);
addLoader("*UND*");
}
}
void ElfLinker::preprocessSections(char *start, char *end)