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stb_image: Two warning fixes

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This commit is contained in:
Fabian Giesen 2023-05-02 17:19:02 -07:00 committed by Sean Barrett
parent 07268cbf36
commit c6d7c32e5d
1 changed files with 5 additions and 5 deletions
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10
stb_image.h
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@ -1072,8 +1072,8 @@ static int stbi__addints_valid(int a, int b)
return a <= INT_MAX - b;
}
// returns 1 if the product of two signed shorts is valid, 0 on overflow.
static int stbi__mul2shorts_valid(short a, short b)
// returns 1 if the product of two ints fits in a signed short, 0 on overflow.
static int stbi__mul2shorts_valid(int a, int b)
{
if (b == 0 || b == -1) return 1; // multiplication by 0 is always 0; check for -1 so SHRT_MIN/b doesn't overflow
if ((a >= 0) == (b >= 0)) return a <= SHRT_MAX/b; // product is positive, so similar to mul2sizes_valid
@ -3384,13 +3384,13 @@ static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan)
return 1;
}
static int stbi__skip_jpeg_junk_at_end(stbi__jpeg *j)
static stbi_uc stbi__skip_jpeg_junk_at_end(stbi__jpeg *j)
{
// some JPEGs have junk at end, skip over it but if we find what looks
// like a valid marker, resume there
while (!stbi__at_eof(j->s)) {
int x = stbi__get8(j->s);
while (x == 255) { // might be a marker
stbi_uc x = stbi__get8(j->s);
while (x == 0xff) { // might be a marker
if (stbi__at_eof(j->s)) return STBI__MARKER_none;
x = stbi__get8(j->s);
if (x != 0x00 && x != 0xff) {