47 lines
1.9 KiB
C
47 lines
1.9 KiB
C
/* PR c/83448 */
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/* { dg-do compile } */
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/* { dg-options "-O2 -Wformat-truncation -fdiagnostics-show-caret" } */
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extern int snprintf (char *, __SIZE_TYPE__, const char *, ...);
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void
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foo (char *a, char *b, char *c, int d, int e)
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{
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snprintf (a, 7, "abc\\\123 efg");
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/* { dg-warning "directive output truncated writing 9 bytes into a region of size 7" "" { target *-*-* } .-1 }
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{ dg-message ".snprintf. output 10 bytes into a destination of size 7" "note" { target *-*-* } .-2 }
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{ dg-begin-multiline-output "" }
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snprintf (a, 7, "abc\\\123 efg");
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~~~~~~~~~~~^~
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{ dg-end-multiline-output "" }
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{ dg-begin-multiline-output "note" }
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snprintf (a, 7, "abc\\\123 efg");
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^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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{ dg-end-multiline-output "" } */
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d &= 63;
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d += 10;
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snprintf (b, 7, "a%dbcdefg", d);
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/* { dg-warning "'bcdefg' directive output truncated writing 6 bytes into a region of size 4" "" { target *-*-* } .-1 }
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{ dg-message ".snprintf. output 10 bytes into a destination of size 7" "note" { target *-*-* } .-2 }
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{ dg-begin-multiline-output "" }
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snprintf (b, 7, "a%dbcdefg", d);
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~~~~^~
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{ dg-end-multiline-output "" }
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{ dg-begin-multiline-output "note" }
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snprintf (b, 7, "a%dbcdefg", d);
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^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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{ dg-end-multiline-output "" } */
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e &= 127;
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snprintf (c, 7, "a%dbcdefgh", e);
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/* { dg-warning "'bcdefgh' directive output truncated writing 7 bytes into a region of size between 3 and 5" "" { target *-*-* } .-1 }
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{ dg-message ".snprintf. output between 10 and 12 bytes into a destination of size 7" "note" { target *-*-* } .-2 }
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{ dg-begin-multiline-output "" }
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snprintf (c, 7, "a%dbcdefgh", e);
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~~~~~^~
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{ dg-end-multiline-output "" }
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{ dg-begin-multiline-output "note" }
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snprintf (c, 7, "a%dbcdefgh", e);
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^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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{ dg-end-multiline-output "" } */
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}
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