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Fix out of bounds array access in lexer

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If the type char is signed, then in the function
yylex_GetFloatMaskAndFloatLen(), *s can have a negative value and be converted
to a negative int32_t which is then used as an array index. It should be
converted to uint8_t instead to ensure that the value is in the bounds of the
tFloatingFirstChar, tFloatingSecondChar, and tFloatingChars arrays.
This commit is contained in:
dbrotz
2019-06-16 15:50:56 -07:00
parent 54e5bf0f0c
commit 1decf5d0d4
4 changed files with 10 additions and 3 deletions
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1
test/asm/garbage_char.asm Normal file
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@@ -0,0 +1 @@
x<EFBFBD>

3
test/asm/garbage_char.out Normal file
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@@ -0,0 +1,3 @@
ERROR: garbage_char.asm(1):
syntax error
error: Assembly aborted (1 errors)!

3
test/asm/garbage_char.out.pipe Normal file
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@@ -0,0 +1,3 @@
ERROR: -(1):
syntax error
error: Assembly aborted (1 errors)!